Entries |
Document | Title | Date |
20080224551 | Cooling an Electrical Machine - An electrical machine includes a stator and a rotor disposed in a housing of the electrical machine. The stator includes windings having a first set of end turns at a first end of the stator and having a second set of end turns at a second, opposing end of the stator. The stator has a substantially tubular shape and an interior lateral surface. The rotor extends through the interior of the stator. A flow inlet into a volume in the housing about the first end turns is located radially outside of the interior lateral surface of the stator. A flow outlet from the volume in the housing about the first end turns is located radially outside of the interior lateral surface. The inlet and the outlet are cooperatively arranged to communicate a flow of fluid substantially transverse across the first end of the stator. | 09-18-2008 |
20080284263 | Water Jacket for a Rotary Machine and Rotary Machine Comprising Same - The invention concerns a water jacket for a rotary machine, the water jacket comprising at least one conduit ( | 11-20-2008 |
20080303359 | Electrical Machine Having a Cooling Jacket - In order to improve the cooling of an electrical machine, the invention proposes an electrical machine having a stator ( | 12-11-2008 |
20080309174 | Electric Motor with Permanent Magnet Excitation and Rotor Cooling - The invention relates to an electric motor ( | 12-18-2008 |
20090009012 | ASSEMBLY AND METHOD FOR MAGNETIZATION OF PERMANENT MAGNET ROTORS IN ELECTRICAL MACHINES - A magnetizer for a rotor of an electrical machine is provided. The magnetizer includes a magnetizing yoke and coils wound around the magnetizing yoke. The magnetizing yoke includes multiple pole-pieces extending therefrom, and at least some of the pole-pieces include a cobalt alloy. | 01-08-2009 |
20090009013 | Cast groove electric motor/generator cooling mechanism - An electric motor/generator cooling mechanism is presented. The cooling mechanism includes a hollow cooling jacket having an inner and outer coaxial surface, where the inner surface defines a generally cylindric cavity for receiving a stator in heat transference contact with the inner surface, and the outer surface has a cast spiral groove section with jogged cooling passages. The disclosure includes an outer case having one or more inlet ports, an outlet port, and a vent for purging air, cooling fluid flowingly encased between the cooling jacket and the outer case, flowing through the jogged cooling passages, and a flanged end surface on an end of the outer case for boltingly connecting the cooling jacket to the outer case. | 01-08-2009 |
20090015081 | Cooling structure and cooling method of rotating electrical machine - A cooling structure of a rotating electrical machine including a stator and a rotor, the cooling structure including magnet accommodating holes provided in a rotor core of the rotor, the magnet accommodating holes extend between axial core end faces of the rotor core, wherein permanent magnets are accommodated in the magnet accommodating holes; a plurality of voids, which prevent leakage flux, in contact with the permanent magnets and extending between the axial core end faces; and a rotor cooling-liquid supply passage that supplies cooling liquid to one core end face, wherein the cooling liquid supplied from the rotor cooling-liquid supply passage is introduced into the voids to prevent leakage flux, and the permanent magnets are cooled by the cooling liquid flowing through the voids. | 01-15-2009 |
20090051232 | Coolant Pump for Electric Motors - The invention relates to a liquid-cooled electric motor ( | 02-26-2009 |
20090079278 | SEGMENTED MOTOR COOLING JACKET - A cooling jacket for an electric motor includes a plurality of jacket portions that are attached to each other to surround a motor stator. Each jacket portion is an extruded component that includes an outer peripheral wall and an inner peripheral wall spaced inwardly from the outer peripheral wall to form a cooling space between the inner and the outer peripheral walls. A plurality of connecting walls extends between the inner and the outer peripheral walls. The connecting walls cooperate with each other to define a plurality of discrete cooling passages within the cooling space of each jacket portion. First and second end caps are mounted to the plurality of jacket portions to enclose the plurality of discrete cooling passages such that a continuous cooling loop is provided through the plurality of jacket portions and the first and second end caps. | 03-26-2009 |
20090079279 | Water Cooled Stator for a Direct Drive Torque Motor - A water cooled stator for a direct drive torque motor comprises a stator base, silicon steel sheets, coils, sealing glue and a water cooled sealing tube. A helical water groove is defined in the outer surface of the stator base. The silicon steel sheets and coils are fixed in the stator base by the sealing glue after solidification. Then, the water cooled sealing tube is directly mounted outside the stator to seal the helical water groove by liquid. By such arrangement, the water cooled sealing tube is used to accomplish simple and independent water cooled sealing, the volume of the products can be effectively reduced, and the water cooled sealing tube can be applied to various tool machines. | 03-26-2009 |
20090096300 | LIGHT WEIGHT LOW COST MOTOR HOUSING AND COOLING FIN ASSEMBLY - A motor housing and cooling fin assembly for an electric motor comprises a stator support having a longitudinal base and a series of fin plates protruding radially from the base, the fin plates for directing fluid coolant through the motor, a cylindrical support sleeve comprising a thin wall, the thin wall containing a series of slots for receiving distal ends of the fin plates; and a motor housing having a cylindrical inner wall, the support sleeve positioned between the stator support and the motor housing in an interference fit. By reducing the thickness of the motor housing by more than the thickness of the added cylindrical support sleeve, the motor housing is lighter. Instead of machining slots directly into the motor housing, they are machined the cylindrical support sleeve, which is of simple geometry, thereby reducing the difficulty and cost of manufacturing. | 04-16-2009 |
20090121562 | Device and method for cooling motor for hybrid electric vehicles - The present invention provides a device for cooling a motor for hybrid electric vehicles, which comprises: an oil pump mounted on an outer surface of the motor housing in such a fashion as to be disposed coaxially relative to the shaft; a cooling oil supply line mounted in such a fashion as to be extended to an inner surface of the spider from an outlet of the oil pump; and a cooling oil return line mounted in such a fashion as to interconnect a bottom portion of the motor housing in which cooling oil is filled and an inlet of the oil pump. | 05-14-2009 |
20090121563 | Liquid Cooled Rotor Assembly - A rotor assembly cooling system ( | 05-14-2009 |
20090179509 | Method for influencing the temparture of an electromechanical component and device for carring out the method - A method and a device for influencing the temperature of at least one electromechanical component situated in a motor vehicle, in which a transmission situated in the motor vehicle is cooled by a transmission oil flowing in a transmission cooling circuit. A cooling circuit branch is provided for influencing the temperature of the electromechanical component. The transmission oil also flows in the cooling circuit branch as a heat carrier. The flow rate of the transmission oil in the cooling circuit branch is influenced for influencing the temperature of the electromechanical component as a function of the setpoint operating temperature and/or the actual operating temperature of the electromechanical component. | 07-16-2009 |
20090184591 | Rotating Electrical Machine - A rotating electrical machine includes: a stator that including a stator core and a teeth section, with a stator coil wound at the teeth section; a rotor arranged via a clearance at an inner periphery side of the stator and supported in a freely rotating manner; and a distribution unit supported by a resin holder, and including a conductor connected to the stator coil. The rotating electrical machine is cooled by coolant. The stator coil includes a coil end section projecting from an end of the stator in an axial direction. A gap is formed between an end of the stator core and a lower surface of the distribution unit by mounting the distribution unit on an upper part of the coil end section. The gap constitutes a path for the coolant. | 07-23-2009 |
20090195092 | WINDING END TURN COOLING IN AN ELECTRIC MACHINE - Winding end turns in an electric machine are cooled by a coolant. Cooling is improved by redirecting the coolant generally tangentially through the winding end turns to improve heat transfer between coolant and windings. | 08-06-2009 |
20090195093 | Hybrid Vehicle - An electric motor radiator ( | 08-06-2009 |
20090230788 | Electric Motor - An electric motor ( | 09-17-2009 |
20090230789 | DRIVE SYSTEM - The invention relates to a drive system having at least one electrical direct drive and at least one bearing module, wherein the bearing module has a radial bearing and/or an axial bearing, and wherein the electrical direct drive and the bearing module have a cooling device. | 09-17-2009 |
20090256433 | Generator with a stator comprising cooling ducts, and method for cooling a laminated stator of a generator - A generator, for example of a wind turbine, includes two end plates and a plurality of stator laminate plates arranged between the two end plates, is described. Each laminate plate and each end plate comprise a number of cooling holes which are located such that the cooling holes of the laminate plates and the cooling holes of the end plates are aligned with each other to form a number of cooling ducts by the stator material itself. Furthermore, a method for cooling a laminated stator of a generator is described having a cooling fluid guided via a tubing from a cooling fluid reservoir into at least one a partly open cooling duct in the laminated stator. | 10-15-2009 |
20090256434 | Liquid-Cooled Machine - A machine includes an inner air-cooled rotor and an outer liquid-cooled stator, in which the stator includes a radial cooling arrangement arranged to convey a cooling liquid radially in the stator. | 10-15-2009 |
20090261667 | ROTOR FOR ELECTRIC ROTATING MACHINE AND ROTATING MACHINE - A rotor for an electric rotating machine, improving cooling performance of the rotating machine. D-axis through-holes ( | 10-22-2009 |
20090261668 | COOLING ELEMENT FOR AN ELECTRICAL MACHINE - In an electrical machine cooling element according to the invention, the electrical machine ( | 10-22-2009 |
20090267426 | Liquid-cooled electric machine and method for cooling such electric machine - The present invention relates to an electric machine with a machine housing, in which a rotor and a stator winding are accommodated, wherein the stator winding includes winding heads arranged on opposite sides each in a winding head space, and with a cooling device which includes a liquid cooling circuit with a stator jacket cooling and cooling coils as well as a fan connected with the rotor for circulating air in the machine housing. The invention furthermore relates to a method for cooling such electric machine. In accordance with the invention it is provided that the cooling coils extend through the winding head spaces outside the winding heads and the fan includes two fan wheels each associated to a winding head space for generating an air flow circulating inside each winding head space, which by means of air duct and/or guiding means in the respective winding head space is circulatingly passed over the exposed cooling coils and through the winding heads. By cooling down the circulating internal air directly in or at the winding head space, a highly efficient cooling of the winding head space can be achieved, without having to sacrifice a compact construction. | 10-29-2009 |
20090267427 | STRUCTURE FOR MOUNTING VEHICLE DRIVING APPARATUS - A mounting structure for a vehicle driving apparatus includes a housing fixed to a vehicle body and including a first internal space and a second internal space formed below the first internal space in the state of being separated from the first internal space; a motor generator provided in the first internal space of the housing; an inverter provided in the second internal space of the housing; and a terminal electrically connecting the motor generator and the inverter. Oil used for cooling the motor generator is stored in the bottom of the first internal space. The portion in the terminal located in the first internal space is located above the highest liquid level of the oil stored in the first internal space. | 10-29-2009 |
20090278413 | ARCHITECTURE FOR ELECTRIC MACHINE - The invention includes an electric machine having a rotor, stator and at least one winding in the stator adapted to conduct a current, and a secondary winding, electrically isolated from the first winding and inductively coupled to the first winding, which may be used to control at least one of the output voltage and current of the first winding. | 11-12-2009 |
20090284086 | SYSTEMS AND APPARATUS INVOLVING TOOTHED ARMATURES IN SUPERCONDUCTING MACHINES - A system for generating power comprising, a superconducting generator including, an armature assembly comprising, a body portion, a tooth portion having a front surface and a rear surface, a slot partially defined by the body portion and the tooth portion, an armature bar engaging the slot, and a cooling cavity partially defined by the tooth portion, communicative with the front surface and the rear surface. | 11-19-2009 |
20090289512 | MOTOR/GENERATOR STRUCTURE - A radial gap motor/generator has a thin annular array of magnets mounted for rotation to a stator in a radially spaced relation to at least one thin annular induction structure fixed to a stationary stator may be air or liquid cooled. Further, the motor has at least radial gap between a magnetic core and the array and may include multiple gaps and multiple annular induction structures to increase the overall power density of the system. | 11-26-2009 |
20090309432 | TURBOMACHINE WITH INTEGRAL GENERATOR/STARTER - A turbomachine such as an aircraft turbojet including an electrical generator/starter that can be mounted and dismounted by axial translation in an upstream enclosure of the turbomachine between the low-pressure compressor and the high-pressure compressor, and couple to electrical cables which extend inside the structural arms of the intermediate casing of the turbomachine. | 12-17-2009 |
20090315415 | ELECTRIC MOTOR COOLING RINGS - An electric spa motor includes a ring circling the motor and in direct contact with the motor case. The ring carries a flow of water to cool the motor and to provide heat to the flow of water to supplement a spa heater. The ring includes a passage through the ring for carrying the flow of water. The ring and the passage have cross-sections with approximately equal height and width. | 12-24-2009 |
20090315416 | Motor with Heat Dissipation Arrangement - The motor with heat dissipation device includes a motor body, a housing covering the motor body, a cooling water tank and a pump. The housing is provided with a water outlet and a water inlet, which connect with the cooling water tank. The pump is arranged between the water inlet and cooling water tank. A water room is provided between the motor body and housing. The pump draws water from the cooling water tank and pushes it into the water room through the water inlet. The water in the water room absorbs heat of the motor body and goes back to the cooling water tank to finish a cycle. | 12-24-2009 |
20090322167 | ELECTRIC ROTATING MACHINE WITH MEANS FOR FEEDING COOLING LIQUID TO ITS STATOR WINDING - The electric rotating machine includes a rotor, a stator having a stator core and a stator winding wound on the stator core, and a cooling liquid feeding function of applying cooling liquid to the coil end of the stator winding. The stator winding constituted by coils wound along the circumferential direction includes crossover portions each of which electrically connects the ends of two of the coils through which currents in the same phase flow, respectively. The crossover portions are arranged so as to overlap one another only partially in the circumferential direction. The cooling liquid feeding function applies the cooling liquid to at least one of the crossover portions. | 12-31-2009 |
20100001596 | System and method for cooling a superconducting rotary machine - A system for cooling a superconducting rotary machine includes a plurality of sealed siphon tubes disposed in balanced locations around a rotor adjacent to a superconducting coil. Each of the sealed siphon tubes includes a tubular body and a heat transfer medium disposed in the tubular body that undergoes a phase change during operation of the machine to extract heat from the superconducting coil. A siphon heat exchanger is thermally coupled to the siphon tubes for extracting heat from the siphon tubes during operation of the machine. | 01-07-2010 |
20100013329 | Oil cooled electric drive module for hybrid vehicles - An oil cooled electric drive module for hybrid vehicles includes an AC motor assembly having a shaft parallel to an output shaft, with the shafts being interconnected by a set of helical reduction gears. The motor shaft is provided with a rotary union for cooling oil that passes first axially and then radially through the shaft to an outer circumferential surface thereof beneath the core of a rotor attached thereto. The cooling oil passes beneath the rotor to the outer ends thereof, where annular deflectors disburse the oil to provide a coanda effect over the shorting rings of the rotor, onto the stator windings, and thence onto the motor housing for return to a cooling sump, which may include hydraulic and electric pumps for further desired cooling circulation. The invention also includes solenoid valves for shifting a splined collar between positions of interconnection and disconnection between the motor shaft and output shaft. The module of the invention is adapted for interpositioning within the drive shaft of a motor vehicle, with the output shaft of the module being connected at opposite ends to the vehicle drive shaft. | 01-21-2010 |
20100013330 | COOLED ELECTRIC GENERATOR WITH TUBES EMBEDDED IN THE COVER THEREOF - A cooling electric generator with pipes embedded in its housing which includes mechanisms for generating electrical power from the motor torque provided by a wind turbine rotor, and with an external housing comprised of a cylindrical casing ( | 01-21-2010 |
20100026108 | ELECTRIC MOTOR WITH HEAT PIPES - A motor that includes a motor portion structured to house a stator and a rotor mounted to a shaft of the motor. The motor additionally includes a cooling portion disposed adjacent to the motor portion and separated from the motor portion by a structural interface. The cooling portion provides a cooling chamber structured to have a cooling fluid passed therethrough via a cooling fluid moving device that is structured to be coupled to and driven by the motor shaft. Furthermore, the motor includes a plurality of heat pipes having evaporator ends disposed within the motor portion and condenser ends disposed within the cooling chamber. During operation of the motor and cooling fluid moving device, the cooling fluid contacts the heat pipe condenser ends to extract heat from the condenser ends, hence cooling the evaporator ends of the heat pipes, thereby cooling the motor portion of the motor and the stator and rotor housed therein. | 02-04-2010 |
20100026109 | ELECTRIC MOTOR WITH HEAT PIPES - A motor including a frame that defines a motor portion and an adjacent cooling portion, and a plurality of heat pipes disposed within and fully enclosed by the motor frame. Each heat pipe has an evaporator end disposed within the portion of the frame that defines the motor portion and a condenser end disposed within the portion of the frame that defines the cooling portion. A cooling chamber within the motor cooling portion is structured to have a fluid introduced therein by a working device such that at least a portion of the frame defining the cooling portion is cooled via the working fluid, thereby extracting heat from the heat pipe condenser ends and cooling the motor portion of the motor. | 02-04-2010 |
20100033038 | SYSTEM AND METHOD FOR COOLING AN ELECTRIC MOTOR - A cooling system is provided for an electric motor and comprises a rotor assembly, an intake assembly, and a first reservoir. The rotor assembly is coupled to and rotatable within a housing, and comprises a rotor having a first and second ends having a first plurality of veins extending therebetween, each vein having an inlet and an outlet. The rotor assembly also comprises a first manifold coupled to and rotatable with the first end of the rotor in fluid communication with the inlets of the first plurality of veins. The intake assembly is coupled to the housing and is in fluid communication with the first manifold. The first reservoir is configured to contain a motor coolant and is coupled to the housing for collecting the motor coolant from the outlets of the first plurality of veins, and for providing a source of motor coolant to the intake assembly. | 02-11-2010 |
20100033039 | ELECTRIC MOTOR - An electric motor for use in an electric vehicle, the electric motor includes: an inner housing which holds a stator; and an outer housing which defines a space through which cooling water is caused to flow between the inner housing and itself. The inner housing and the outer housing are connected by a plurality of columns disposed in the space. | 02-11-2010 |
20100033040 | ROTARING ELECTRIC MACHINE - To provide a rotating electric machine capable of accurate detection of coil temperature by causing refrigerant to flow so as not to contact a temperature detecting element provided on a coil end portion. A rotating electric machine ( | 02-11-2010 |
20100038980 | COOLING SYSTEM OF A SUPERCONDUCTING MACHINE - A superconducting machine device is disclosed including a machine; a rotor including a superconductive coil; and a cooling system including at least one incline-intolerant component for cooling the coil. In at least one embodiment, at least one component is held by a carrier compensating for an incline of the machine device. | 02-18-2010 |
20100038981 | ROTATING ELECTRIC MACHINE AND COOLING SYSTEM FOR THE ROTATING ELECTRIC MACHINE - Heat discharging property of the stator coil end is improved effectively in a rotating electric machine. A motor as the rotating electric machine includes a stator and a rotor. The stator includes a stator core and resin mold coil ends provided on both axial ends thereof. Column-shaped projections projecting in the axial direction are provided on axial side surfaces of resin mold coil ends at a plurality of positions. Cooling oil supplied from above the resin mold coil ends effectively cools the resin mold coil ends. | 02-18-2010 |
20100045125 | Rotary electric machine - A rotary electric machine having a stator including a coil; and a cooling unit that cools a coil end of the coil, which projects in an axial direction of the stator, wherein the cooling unit includes: an outer periphery cooling portion that is disposed along an outer peripheral surface of the coil end and includes a plurality of injection holes that inject a cooling medium onto the outer peripheral surface; and an end surface cooling portion that is disposed along an axial end surface of the coil end and includes a plurality of injection holes that inject the cooling medium onto the axial end surface. | 02-25-2010 |
20100052441 | Oil Cooling System for Motor - An oil cooling system for a motor includes a rotor, a stator core annularly positioned around the rotor, a plurality of coils annularly arranged and each wound around the stator core, and a plurality of oil discharging holes annularly arranged in a circumferential direction of the stator core, the oil discharging holes through which oil is discharged with pressure in an axial direction of the stator core to cool the coils. | 03-04-2010 |
20100072834 | Assemblies for Electrical Machines - The present invention provides an assembly for mounting to, or forming part of, the stator assembly of a rotating electrical machine. A plurality of component modules are provided at angularly spaced-apart locations around the assembly and contain power electronics components. Electrically conductive toroidal inlet and outlet manifolds are provided to convey coolant fluid (preferably a liquid dielectric such as MIDEL) to and from the component modules. The inlet and outlet manifolds provide a dual function as a coolant circuit for conveying coolant fluid and as busbars. | 03-25-2010 |
20100072835 | Stacking Method For Electric Machines - Stacking more than one electric machine module (i.e., electromagnetic electric motor or generator system) with all stator bodies commonly attached and all moving bodies commonly attached increases the overall power of the stack according to the sum of power rating of each module in the stack. A keying object means comprises complementary keys on the stator and rotor bodies that allow easy mating alignment of at least two autonomous electric machine modules in the stack and preserve the mechanical integrity so all modules in the stack move or act as one large electric machine. Furthermore as an integral component in the manufacturing process of the electric machine module, the keying object means serves as an alignment mechanism for precision manufacture of the module chassis without precision methods, such as precision machining, or precision materials, or precision pieces, such as castings. | 03-25-2010 |
20100079016 | INTEGRATED COOLING CONCEPT FOR MAGNETICALLY GEARED MACHINE - A magnetically geared machine having an integrated cooling concept is provided. The machine includes a rotor having an inner surface and an outer surface, a magnet assembly coupled to one of the inner or outer surfaces of the rotor, and a stator having a plurality of stator windings. The machine further includes a magnetic flux modulator interposed between the rotor and the plurality of stator windings, where the flux modulator includes a plurality of magnetically conductive portions and a plurality of non-magnetically conductive portions placed alternately, where one or more of the plurality of non-magnetically conductive portions comprise a channel for a cooling fluid. | 04-01-2010 |
20100102649 | HYDROFORMED COOLING CHANNELS IN STATOR LAMINATIONS - A system for cooling an electrical machine is disclosed. The electrical machine includes a rotor, a stator, and at least one cooling tube extending through the stator. During operation of the electrical machine, fluid flows through the tube and carries away heat generated by the electrical machine. | 04-29-2010 |
20100102650 | Arrangement for cooling of an electrical machine - In one aspect, an arrangement is provided. An electrical machine includes elements generating heat while the electrical machine is at work. The elements include at least one fixing-arrangement to support an element-structure. The fixing-arrangement is hollow to carry a cooling fluid which allows a transfer of the heat away from the elements. | 04-29-2010 |
20100102651 | ARRANGEMENT FOR COOLING OF AN ELECTRICAL MACHINE - An arrangement for cooling an electrical machine is provided. A stator of the electrical machine contains a plurality of stacked laminate plates, each laminate plate having a plurality of slots on one side. The slots of the stacked laminate plates are forming channels, the channels containing metal-winding of electrical coils. A metal cooling-pipe is provided within at least one channel for cooling the laminate plates. | 04-29-2010 |
20100102652 | Arrangement for cooling of an electrical machine - In one aspect, an arrangement for cooling of an electrical machine is provided. The arrangement includes a rotor and a stator of the electrical machine, while an air-gap is between the rotor and the stator. The electrical machine includes an air-cooling-arrangement, which circulates air inside the electrical machine. The electrical machine includes a liquid-cooling-arrangement, which circulates cooling-liquid inside the electrical machine. The air-cooling arrangement and the liquid-cooling-arrangement are connected by an air-to-liquid heat-exchanger, which is applied to transport heat out from the electrical machine by the cooling-liquid. | 04-29-2010 |
20100102653 | Arrangement for Cooling of an Electrical Machine - An arrangement for cooling an electrical machine is provided. The electrical machine is connected with a first cooling-system which directly cools the electrical machine. The first cooling-system circulates a first cooling-medium. The first cooling-system is connected with a second cooling-system which delivers heat from the first cooling-system to the second cooling-system. The second cooling-system circulates a second cooling-medium to remove the received heat. The first cooling-system is connected with a third cooling-system, which is a refrigeration-system, to additionally cool down the first cooling-medium of the first cooling-system. | 04-29-2010 |
20100133930 | HYBRID DRIVE DEVICE - The hybrid drive device characterized in that: a case space (G | 06-03-2010 |
20100141062 | Rotating Directional Coolant Spray for Electric Machine - Disclosed is a rotor for a fluid cooled electric machine including a rotor shaft rotably located at a central axis and a plurality of rotating coolant passages extending outwardly from the rotor shaft to direct a flow of coolant to a desired impingement location on the electric machine thereby removing thermal energy from the impingement location. Further disclosed is a fluid cooled electric machine including a plurality of coolant passages each including at least one coolant passage inlet and at least one coolant passage outlet, the plurality of coolant passages configured to rotate about the central axis and direct a flow of coolant therethrough to a desired impingement location thereby removing thermal energy from the impingement location. | 06-10-2010 |
20100164310 | Liquid cooled permanent magnet rotor - A permanent magnet rotor for an electrical generator includes a rotor shaft and a rotor core mounted coaxially upon the rotor shaft. The rotor core defines a plurality of longitudinal core passages which include a segment of a rotor cooling circuit, and further includes a permanent magnet outer core component mounted on an inner core component and including a plurality of permanent magnets. A cooling liquid containment mechanism for the permanent magnet rotor includes a first liquid containment cover coupled to the inner core component and a second liquid containment cover coupled to the inner core component. The liquid containment covers are configured to contain cooling liquid passed from an inlet segment of the rotor cooling circuit defined by the rotor shaft into the plurality of longitudinal core passages, and thenceforth into an outlet segment of the rotor cooling circuit also defined by the rotor shaft. The liquid containment covers are mounted on the inner core component at locations radially inward of a cylindrical outer surface thereof. | 07-01-2010 |
20100176668 | Stator - A stator that includes a cylindrical stator core, which has a plurality of slots that are provided at predetermined intervals in a circumferential direction and open toward an inner peripheral surface of the stator core; and a coil, which has a coil end portion protruding from an axial end of the stator core. | 07-15-2010 |
20100176669 | Liquid Cooling Arrangement for Electric Machines - A liquid cooling arrangement for electric machines uses a continuous cooling tube associated with a heat storing element. The cooling tube has a serpentine configuration and the heat storing element includes longitudinal slots starting from both longitudinal ends of the heat storing element. Accordingly, it is possible to slightly deform the heat storing element to properly position it into the internal stator of an electric machine. An internal biasing assembly may be used to force the external surface of the heat storing element to the internal surface of the stator. | 07-15-2010 |
20100194219 | DRIVING APPARATUS AND VEHICLE INCLUDING DRIVING APPARATUS - A driving apparatus includes a rotating electrical machine; an inverter capable of supplying electric power to the rotating electrical machine; a containing case; a coolant circuit distributing coolant capable of cooling the inverter and the rotating electrical machine; a cooling mechanism, which is provided in the coolant circuit, is contained in the containing case, and is capable of cooling the rotating electrical machine and the inverter; and a supplying pipe capable of supplying the cooling mechanism with the coolant circulating in the cooling circuit. | 08-05-2010 |
20100219705 | COOLING APPARATUS FOR ELECTRIC MOTOR - A cooling apparatus for an electric motor includes a mount to be fixed to and abutted against the electric motor, and a cooling unit installed to the mount. The mount defines at least two channels. The cooling unit connects adjacent said at least two channels to form a passage to allow a cooling fluid flowing in the passage. | 09-02-2010 |
20100231065 | MOTOR COOLING STRUCTURE - A motor cooling structure includes a coil end cover interposed between a coil end and a motor case, a liquid passage, in which a cooling liquid flows, formed between the coil end cover and the coil end or the motor case. A micro-gap into which part of the cooling liquid in the liquid passage flows, is formed between the coil end cover and the coil end or the motor case by sandwiching the coil end cover between the coil end and the motor case instead of attaching the coil end cover to the coil end or the motor case. | 09-16-2010 |
20100244594 | Stator - A stator includes a substantially cylindrical stator core, which has a fixing ridge provided with a fastening portion for fixing, and which is positioned so that an axial center of the stator extends substantially horizontally; and sealing members, which are respectively attached to both axial ends of the stator core so as to be positioned on a side of the uppermost part of the main body outer peripheral surface with respect to the target ridge, and which respectively form sealing walls that have a height equal to or higher than a horizontal plane extending in the uppermost part of the ridge outer peripheral surface, wherein a recess surrounded by the ridge outer peripheral surface, the main body outer peripheral surface, and the sealing walls serves as a refrigerant reservoir recess for storing a refrigerant. | 09-30-2010 |
20100244595 | HEAT TRANSFER THROUGH ELECTRICAL SUBMERSIBLE PUMP MOTOR - The motor of an electrical submersible pump generates a significant amount of heat that can be removed by transferring it to the well production fluid. Grooves in the stator and motor housing facilitate more rapid heat transfer from the rotor and stator, through the motor lubricant, to the motor housing. Increased heat transfer to the motor housing facilitates increased heat transfer to the production fluid on the outside of the motor housing. | 09-30-2010 |
20100259118 | VEHICLE DRIVE DEVICE - A vehicle drive device ( | 10-14-2010 |
20100264759 | INTEGRATED BRUSHLESS STARTER/GENERATOR SYSTEM - A brushless starter/generator includes a rotor rotatably mounted within a stator mounted within a housing and an oil cooling system using cooling oil from an engine accessory gearbox for cooling the rotor and the stator. The rotor is fixedly mounted on a rotor shaft having a rotor heat exchanger disposed therein. A stator heat exchanger for cooling the stator includes an oil jacket around the housing. The stator heat exchanger includes a grooved tube around the housing and axially extending axial passages connected to annular inlet and outlet manifolds in the grooved tube. The rotor shaft is operably connected to a power take-off shaft within the gearbox and rotatably supported by a shaft bearing in a gearbox casing of the accessory gearbox. The oil cooling system is a dry cavity oil cooling system which prevents cooling oil from entering an air gap between the rotor and the stator. | 10-21-2010 |
20100264760 | ELECTRIC ROTATING MACHINE - The electric rotating machine includes a rotor relatable around a rotating shaft disposed horizontally, a stator core formed with slots, and a stator coil constituted of in-slot portions each of which is accommodated in a corresponding one of the slots, and turn portions each of which connects corresponding adjacent two of the in-slot portions at a position outside the stator core. The turn portions form a coil end projecting axially outward from an end surface of the stator core at each of both axial end sides of the stator core. The coil end is formed in a cylindrical shape including an axial end surface of a flat shape, and inner and outer peripheral surfaces of a circular shape. The electric rotating machine further includes a coolant supply section to supply coolant to an upper part of the outer peripheral surface of the coil end. | 10-21-2010 |
20100277016 | METHODS AND APPARATUS FOR A PERMANENT MAGNET MACHINE WITH A DIRECT LIQUID COOLED STATOR - A permanent magnetic machine includes a stator body having a first end, a second end, and a plurality of generally radial slots formed therein for accepting a set of windings having a first set of end-turns at the first end and a second set of end-turns at the second end. The stator body has a plurality of channels adjacent to the slots and extending from the first end of the stator body to the second end of the stator body, wherein the channels are configured to allow the flow of a cooling fluid therethrough. A plurality of nozzles in fluid communication with the plurality of channels are configured to spray the cooling fluid onto the first and second set of end turns. | 11-04-2010 |
20100283333 | OIL PRESSURE REGULATING VALVE FOR GENERATOR APPLICATIONS - A generator includes a rotor to be driven to rotate and generate electricity and a housing receiving the rotor. An oil supply includes an oil inlet port and an oil outlet port. A pressure regulating valve regulates the flow of oil from the inlet port to the outlet port. The pressure regulating valve includes a valve sleeve mounted within the housing. The valve sleeve extends into a bore within the housing. A valve spool is mounted within the valve sleeve. The valve sleeve has a flange abutting an outer face of the housing. Bolts tighten the flange against the housing. An inner end of the valve sleeve extends radially inwardly to form a ledge. The ledge is spaced away from an inner face of the housing. A valve sleeve, a sense piston and a valve spool are also disclosed and claimed. | 11-11-2010 |
20100283334 | GENERATOR MAIN STATOR BACK-IRON COOLING SLEEVE - A main stator sleeve for a generator includes a sheet of material that includes an arcuate notch one two opposed edges such that a butt joint therebetween defines a pin aperture. | 11-11-2010 |
20100289348 | AXIAL FLOW MACHINE - In an electrical axial flow machine, comprising a stator and a rotor, wherein either the stator comprises a coil arrangement and the rotor is provided with permanent magnet elements, or wherein the rotor comprises a coil arrangement and the stator is provided with permanent magnet elements, the stator is arranged spaced from the rotor under the formation of an air gap, each of the magnetic flux yokes has several neighbouring magnetic flux poles, the coil arrangement has at least one hollow cylindrical winding which is at least partially encompassed by magnetic flux yokes, the magnetic flux poles each have an outside which is oriented to the permanent magnet elements beyond the air gap, neighbouring permanent magnet elements in the circumferential direction have an alternating magnetic orientation towards the air gap, at least several of the magnetic flux poles are in certain positions of the rotor relative to the stator at least partially oriented in alignment with the permanent magnet elements, the magnetic flux yokes are formed from several ring cylinder segments, one support disk each is arranged between neighbouring magnetic flux yokes for the ring cylinder segments of the magnetic flux yokes in the direction of a longitudinal centre axis of the magnetic flux yokes, with the support disk comprising means for the mechanic positioning of at least two ring cylinder segments, forms a thermal path to a heat sink and has an electrically insulating effect. | 11-18-2010 |
20100320850 | OIL COOLED GENERATOR - A rotor for a dynamoelectric machine may include a rotor shaft having a first shaft and a second shaft within the first shaft. The two shafts include discharge orifices for communicating a cooling fluid through the machine. A rotor core of the machine includes a lamination having an annular portion that circumscribes an open center, a plurality of pole portions extending outwardly from the annular portion, and coil winding regions adjacent to the pole portions. One or more channels extend between the open center and the coil winding regions to communicate a cooling fluid. Coil windings of the machine may be at least partially encased in insulators. Each insulator may include a fluid entry orifice located between the insulator ends to communicate a cooling fluid. An end plate of the machine may include fluid discharge outlets for communicating cooling fluid received from the coil windings. | 12-23-2010 |
20100320851 | INTERNAL OIL COOLING VIA HOUSING END BRACKETS FOR AN ELECTRIC MACHINE - A system for cooling an electrical machine is disclosed. The electrical machine includes a stator including a plurality of coils, an exterior housing, and an end cap. During operation of the electrical machine, a fluid is sprayed from the end cap onto the plurality of coils to carry away heat generated by the electrical machine. | 12-23-2010 |
20110001370 | ELECTRIC MOTOR INTEGRATED HYDRAULIC MOTOR - The present invention provides a small-size light-weight electric motor integrated hydraulic motor which is simple in configuration, integrally includes an electric motor and a hydraulic motor, and is capable of efficiently operate, by being configured such that: a swash plate type hydraulic motor and an electric motor driven by the swash plate type hydraulic motor are provided in one casing; the casing is filled with oil; a driving shaft of the swash plate type hydraulic is configured to extend from a front end portion of the casing up to a rear end portion thereof and be supported at the front and rear end portions of the casing; the swash plate type hydraulic motor and a rotor of the electric motor are provided in series at the driving shaft; and a stator of the electric motor is fixed to an inner side portion of the casing. | 01-06-2011 |
20110012447 | HYBRID CASCADING LUBRICATION AND COOLING SYSTEM - A hybrid cascading lubrication and cooling system ( | 01-20-2011 |
20110012448 | ELECTRIC MOTOR - An electric motor ( | 01-20-2011 |
20110025144 | COOLING HOUSING FOR A SWITCHED RELUCTANCE ELECTRIC DEVICE - The present disclosure provides a fluid-cooled housing for an electric device having a housing. The housing includes an outer surface and an inner surface, the inner surface defining, at least in part, a housing cavity having a longitudinal axis, an end wall continuous with the inner surface, thereby substantially enclosing the housing cavity at a first end, and a chain of cooling channels creating a serpentine pattern defined along the inner surface of the housing. | 02-03-2011 |
20110068645 | Mill Drive System - A mill drive system with a transmission arranged beneath a milling table and with at least one planetary and/or spur gear stage as well as a vertical shaft position is provided. In addition, an electric motor is integrated in a housing of the transmission and is connected to a lubricant supply circuit of the transmission. A rotor and a stator of the electric motor have vertically extending axes. Cooling of the motor is performed by a lubricant circulating through the transmission. Furthermore, a lubricating-oil-proof sheath for rotor and/or stator windings of the electric motor for sealing with respect to the lubricant is provided. In addition, the mill drive system includes a converter with a regulation device for backlash-free speed regulation of the electric motor. | 03-24-2011 |
20110074233 | COOLING STRUCTURE OF MOTOR - An internal cooling structure for a motor, which is effective to remove the heat in the rotor to achieve high cooling effect is provided. The motor includes a stator having a stator coil and a stator core, and a rotor positioned on an inner side of the stator core. The rotor includes a tubular rotor spindle on a rotor drive shaft, and the rotor core is fitted to the rotor spindle. A cooling space is defined between the rotor drive shaft and the rotor spindle. An inner peripheral surface of the rotor spindle confronting the cooling space has tapered shape having large diameter at an end portion. An oil feed passage for a cooling oil is defined inside the rotor drive shaft, and a cooling oil discharge port of such oil feed passage is formed in the rotor drive shaft confronting the cooling space. | 03-31-2011 |
20110074234 | HEAT DISSIPATING DEVICE OF AN ELECTROMOTOR - A heat dissipating device of an electromotor is a composite cooling device driven in a powerless manner and used for stirring a cooling liquid applied on a surface of a casing of the electromotor. The heat dissipating device includes a pair of bearings fitted on the casing, and a roller disposed at outer ring seats of the pair of bearings. The roller has a sealed chamber therein, the chamber covers a surface of the casing located in a disposition region of the bearings, and at least one outer blade is disposed outside the roller. Thereby, composite heat dissipating of liquid cooling and air cooling of the electromotor is implemented with a cooling liquid injected into the chamber of the roller and a wind force applied on the outer blade. | 03-31-2011 |
20110084561 | OIL COOLED MOTOR/GENERATOR FOR AN AUTOMOTIVE POWERTRAIN - An oil-cooled motor/generator for an automotive powertrain located outside of the transmission is provided, such as a BAS motor/generator. The motor/generator may have a stator, a rotor circumscribed by the stator, and a motor shaft on which the rotor is mounted for rotation. A housing assembly may surround the stator and the rotor, with a bearing positioned between the housing assembly and the motor shaft. A flow control member may at least partially circumscribe the rotor axially adjacent the stator. A bearing retainer may be positioned axially adjacent the bearing. A rotor end ring may be axially adjacent the rotor. The housing assembly may have an inlet configured to receive cooling oil. The housing assembly, the flow control member, the bearing retainer and the rotor end ring may be configured to distribute the cooling oil from the inlet to cool the stator, the rotor and the bearing. | 04-14-2011 |
20110133580 | Rotating Electrical Machine - A rotating electrical machine includes: a stator that includes a cylindrical stator core and a stator winding wire wound around the stator core; and a rotor disposed facing the stator via a gap; wherein at least one cooling medium path extending in a direction of a central axis of the stator core is provided in the stator; and the cooling medium path is inclined relative to the central axis of the stator core. | 06-09-2011 |
20110148229 | ELECTRIC MACHINE HAVING SPRAY AND SUMP COOLING - An electric machine has a housing, and in the housing has at least one electrical assembly including a rotor, and having a cooling device which, in the lower region of the housing, has a sump pan that is situated or developed there for a coolant. The cooling device further has at least one coolant spray device for spraying the electrical assembly with coolant, the sump pan having a coolant discharge which, during non-operation of the electric machine, feeds the coolant into a coolant reservoir and is dimensioned so that, during operation of the electric machine at a specified coolant volume flow of the coolant spray device, a coolant level, which wets the rotor, sets in in the sump pan. A corresponding method is also provided. | 06-23-2011 |
20110156507 | Hub Motor - A hub motor is provided. The hub motor includes a shaft, a casing, a first bimetal, and a second bimetal. The casing has an inner wall, a first through hole, and a second through hole. The first through hole and the second through hole are disposed on the inner wall. The first bimetal and the second bimetal are disposed on the inner wall. A first end of the first bimetal, after being heated, warps and exposes the first through hole. A second end of the second bimetal, after being heated, warps and exposes the second through hole. The first end faces substantially the same direction as the rotating direction of the casing. The second end faces substantially the reverse direction of the rotating direction of the casing. | 06-30-2011 |
20110156508 | ELECTRIC ROTATING MACHINE WITH COOLING MECHANISM - An electric rotating machine is provided which includes a stator in which a coil is so wound as to have an coil end and a coolant channel. The coolant channel has defined therein a flow path through which coolant flows and a flow separator disposed in the flow path and a first and a second coolant outlet. The flow separator works to separate a flow of the coolant into at least a first and a second coolant streams. The first coolant outlet communicates with the first coolant stream, while the second coolant outlet communicates with the second coolant stream. The first and second coolant outlets drain the coolant to different portions of the coil end, thereby cooling almost the whole of the coil end even when the electric rotating machine is tilted undesirably. | 06-30-2011 |
20110156509 | ELECTRIC ROTATING MACHINE WITH COOLING MECHANISM - An electric rotating machine includes a rotor, a stator in which a coil is so wound as to have an coil end, and a coolant supply pipe. The coolant supply pipe lies with a length thereof extending substantially parallel to an axis of rotation of the rotor and is disposed above the stator in a direction of gravitational force. The coolant supply pipe has a first and a second coolant outlet through which coolant is to be emitted to the coil end. The first and the second coolant outlets are so oriented as to direct streams of the coolant to a first area and a second area of the coil end which are different in location from each other. This enables the coolant to be emitted to almost the whole of the coil end even when the electric rotating machine is titled in a direction in which the rotor turns. | 06-30-2011 |
20110156510 | VEHICLE DRIVE MOTOR - A vehicle drive motor, capable of efficiently cooling the motor stator without being accompanied by an increase in size, includes a stator having an annular stator core, provided in an inner periphery of a tubular motor casing, and a stator coil provided in the stator core, and a rotor on an inner side of the stator core and rotatable relative to the stator. The motor casing includes an oil supply passage and an oil discharge passage in the motor casing and opening at an inner diametric surface of the motor casing, which are opposite axially to each other. Stator core grooves communicated with the oil supply passage and the oil discharge passage extend axially in an outer diametric surface of the stator core. Accordingly, lubricant oil may flow from the oil supply passage towards the oil discharge passage through the stator core groove. | 06-30-2011 |
20110175467 | COOLANT SYSTEM FOR ELECTRIC MOTORCYCLE - A cooling system for an electric motor of an electric motorcycle is disclosed. The cooling system includes a motorcycle frame including an internal volume, an entrance orifice and an exit orifice. The cooling system further includes an electric motor including an internal volume, a first tubular element connecting the exit orifice with the electric motor and a second tubular element connecting the electric motor with the entrance orifice. The cooling system further includes a liquid coolant located within the internal volume of the frame, the internal volume of the first and second tubular elements and the internal volume of the electric motor. The cooling system further includes a pump for circulating the liquid coolant from the electric motor, through the first tubular element, through the entrance orifice of the frame, through the internal volume of the frame, through the exit orifice of the frame and back to the electric motor. | 07-21-2011 |
20110181136 | COOLING STRUCTURE OF STATOR - A cooling structure of a stator, including a case that accommodates a rotating electrical machine, and cooling a coil end portion protruding from a stator core included in the stator of the rotating electrical machine. The structure supplies a cooling medium from the stator axial direction toward a gap that is formed between an inner surface of the case and an outer edge of the stator core. The cooling medium introducing gap is formed above a portion of the coil end portion to which the cooling medium is to be supplied. A storage space forming member is provided along an outer peripheral surface of the coil end portion. The storage space forming member has a contact portion having a first contact portion that contacts the inner surface of the case to close the cooling medium storage space on the one side in the stator axial direction. | 07-28-2011 |
20110221286 | ELECTRIC ROTATING MACHINE - An electric rotating machine includes a stator, a rotor, and a housing. The stator includes a stator core and a stator coil formed by laminating magnetic steel sheets. Each of the magnetic steel sheets has through-holes that are formed to penetrate the magnetic steel sheet in the axial direction of the stator core. All of the magnetic steel sheets are divided into groups each of which includes axially-adjacent n of the magnetic steel sheets, where n is an integer not less than 2. For each of the groups, corresponding n of the through-holes of the n magnetic steel sheets of the group communicate with one other to form an inside coolant passage. The inside coolant passage fluidically connects an outside coolant passage, which is formed between the housing and the radially outer surface of the stator core, with a corresponding one of the slots of the stator core. | 09-15-2011 |
20110221287 | STATOR SECTION FOR AN AXIAL FLUX ELECTRIC MACHINE WITH LIQUID COOLING SYSTEM - In a stator section ( | 09-15-2011 |
20110227431 | DYNAMOELECTRIC MACHINE - The invention relates to a dynamoelectric machine ( | 09-22-2011 |
20110234029 | COOLING ARRANGEMENT FOR AN ELECTRIC MACHINE - An electric machine includes a stator having an outer circumference. Spaced apart first walls are arranged about the outer circumference and provide generally parallel first channels. A second wall adjoins the first wall and is arranged about the outer circumference providing a second channel in fluid communication with the first channels, thus, providing a tortuous fluid flow path about the circumference. The first and second channels have an inner surface. A structure is provided within at least one of the first and second channels. The structure has an outer surface spaced radially outward from the inner surface and at least partially defines the tortuous flow path between the outer and inner surfaces. The stator includes an end turn. An end cap extends axially and radially outward from the stator and provides an enclosure about the end turn in fluid communication with the exit associated with the flow path. | 09-29-2011 |
20110241459 | MAGNET GENERATOR - In a flywheel-type magnet generator, a heat dissipation member which has no relation with a magnetic circuit is fitted into a space formed by cutting a bulk of a laminating core used for configuring the magnetic circuit, a cooling tube installed to be inserted into or penetrate the heat dissipation member is provided, and by supplying a cooling medium to the cooling tube, cooling performance of the stator is enhanced. | 10-06-2011 |
20110248584 | Electric Machine - An electric machine is disclosed, which includes a stator having several end windings, a rotor and a cooling means transporting a liquid cooling medium. The cooling means axially projects out of the stator. At least the end windings are encased by a thermally conductive material. In one embodiment the cooling means is a duct-like pipe. | 10-13-2011 |
20110278968 | Multi-Path Liquid Cooling Arrangement for Electric Machines - A multi-path liquid cooling arrangement for electric machines comprising a heat storing element provided with channels having a generally C-shaped cross-section and cooling tubes so configured and sized as to be insertable in the channels is described herein. The cooling tubes, once inserted in the channels are deformed to conform thereto, whereby heat stored in the heat storing element is extracted by circulating cooling fluid inside the cooling tubes. | 11-17-2011 |
20110285221 | Stator Winding Assembly and Method - An electrical device includes a plurality of stacked laminates that form a tubular stator portion, a cooling passage partially defined by orifices formed in the plurality of stacked laminates, a housing including a cavity further defining the cooling passage, the cooling passage defining a fluid flow path parallel to a rotational axis of the stator portion, a sump portion communicative with the cooling passage, the sump portion including a cavity defined by the stator portion and the housing member. | 11-24-2011 |
20110298314 | VEHICLE DRIVE SYSTEM - A vehicle drive system configured with a dynamo within a case. The case is disposed on at least one axial side of the dynamo, and includes a wall portion overlapping the dynamo, which has a section that overlaps with the dynamo as viewed from the axial direction. The wall portion overlapping the dynamo includes a supply flow passage through which lubricating-cooling fluid flows, and which is formed with a first supply portion that supplies lubricating-cooling fluid to a rotor support bearing for the dynamo electric. The first supply portion includes a throttle portion whose flow passage cross-sectional area is small when compared to an upstream-side flow passage cross-sectional area in the flow direction of lubricating-cooling fluid. The supply flow passage includes a second supply portion that is a portion supplying lubricating-cooling fluid to the dynamo and higher than the first supply portion. | 12-08-2011 |
20110298315 | Electric Machine Cooling System and Method - Embodiments of the invention provide an electric machine module including a housing. In some embodiments, the housing can include a sleeve member coupled to at least one end cap. The housing can include an inner wall at least partially defining a machine cavity, a coolant sump, and at least one coolant channel positioned between the inner wall and an outer wall of the housing. In some embodiments, the coolant channel can be in fluid communication with the coolant sump. In some embodiments, an electric machine can be positioned in the machine cavity. The electric machine can comprise a stator assembly including stator end turns and a rotor assembly. In some embodiments, a coolant jacket can be at least partially defined by the housing and can be positioned so that to at least partially circumscribe a portion of the stator assembly. | 12-08-2011 |
20110304228 | Potted End Turns of an Electric Machine - Embodiments of the invention provide an electric machine module and a method for cooling an electric machine module. The electric machine module includes an electric machine including a stator with stator end turns, a liquid-cooled housing at least partially enclosing the electric machine, and a potting material in contact with and at least partially surrounding the stator end turns. The method includes potting at least some of the stator end turns with the potting material to provide a thermally-conductive path from the stator end turns to the housing and circulating a coolant through the housing to at least remove heat energy conducted from the stator end turns to the housing. | 12-15-2011 |
20110309697 | ELECTRIC MOTOR ASSEMBLIES INCLUDING STATOR AND/OR ROTOR COOLING - An electric motor assembly including a stator having a stator core and windings around the stator core is disclosed. The stator core has opposing ends and an outer surface extending between the opposing ends. The electric motor assembly also includes a housing having an inner surface enclosing at least a portion of the stator, and at least one fluid passage between the outer surface of the stator core and the inner surface of the housing. The fluid passage permits a coolant in the fluid passage to contact one or more portions of the outer surface of the stator core to remove heat from the stator core during operation of the electric motor assembly. Additional motor assemblies including stator and/or rotor cooling features are disclosed. | 12-22-2011 |
20110309698 | Electric Motor Assemblies Including Stator and/or Rotor Cooling - An electric motor assembly including a stator having a stator core and windings around the stator core is disclosed. The stator core has opposing ends and an outer surface extending between the opposing ends. The electric motor assembly also includes a housing having an inner surface enclosing at least a portion of the stator, and at least one fluid passage between the outer surface of the stator core and the inner surface of the housing. The fluid passage permits a coolant in the fluid passage to contact one or more portions of the outer surface of the stator core to remove heat from the stator core during operation of the electric motor assembly. Additional motor assemblies including stator and/or rotor cooling features are disclosed. | 12-22-2011 |
20110316367 | ROTARY ELECTRIC MACHINE WITH IMPROVED COOLING CAPABILITY - In a rotary electric machine, a stator coil includes in-slot portions each contained in a corresponding one of slots of a stator core. The stator coil includes turn portions each connecting one end of a corresponding one of the in-slot portions projecting from one axial end of the stator core with one end of a corresponding alternative one of the in-slot portions projecting the one axial end of the stator core. The turn portions provide an end portion of the stator coil. A coolant guide is placed to cover a circumferential outer part of the end portion of the stator coil from radially outside thereof and provided with holes therethrough. The coolant guide guides a coolant therealong in a circumferential direction of the end portion of the stator coil while guiding, through the holes, a part of the coolant to the end portion of the stator coil. | 12-29-2011 |
20120001503 | ELECTRIC MOTOR HAVING HEAT PIPES - An electric motor includes a rotor unit disposed rotatably in a motor housing. The rotor unit includes a rotor shaft rotatable relative to the motor housing about a central axis of the motor housing, a heat conductive seat mounted with a magnet member and in sleeved relationship to an intermediate portion of the rotor shaft, and angularly spaced apart heat pipes extending through an end portion of the rotor shaft thicker than the intermediate portion and into the seat. Each heat pipe has an end portion disposed outward of the rotor shaft, and extending into and in thermal contact with a heat conductive impeller connected to the second end portion of the rotor shaft to co-rotate with the rotor shaft and covered by an outer shell cap. A stator unit is mounted fixedly in and is in thermal contact with the motor housing, and is disposed around the rotor unit. | 01-05-2012 |
20120001504 | MODES OF COOLING HYBRID ELECTRIC MACHINES - A system and method for cooling an electric motor comprising a plurality of laminations defining a lamination stack, a coolant passage and a motor winding. Coolant is pumped into the coolant passage and forced along the entire length of the lamination stack. The coolant is then sprayed on the motor winding in order to cool the motor winding. | 01-05-2012 |
20120013206 | Cooling System and Method for an Electric Machine Module - Embodiments of the invention provide an electric machine module including an electric machine. The electric machine includes a rotor assembly. The machine includes an output shaft having a longitudinal axis that is circumscribed by a portion of the rotor assembly. The output shaft comprises an output shaft channel and is coupled to the rotor assembly. A coolant passage system is positioned within the rotor assembly and includes an inlet channel in fluid communication with the output shaft channel and at least one recess. The recess is in fluid communication with the inlet channel. The coolant system can include an outlet channel in fluid communication with the recess. The outlet channel can include at least one coolant outlet so that the coolant outlet is a greater radial distance form the longitudinal axis than is the output shaft channel. | 01-19-2012 |
20120025639 | APPARATUS FOR A HIGH SPEED SLEEVELESS ROTOR - A high-speed sleeveless rotor for an electric machine is provided. The rotor includes a shaft rotatable about a longitudinal axis, and a rotor core circumscribing at least a portion of the shaft wherein the rotor core includes an axially oriented slot. The slot includes a radially outer slot opening, a radially inner slot floor, and a slot sidewall extending therebetween. The slot floor includes a topstick attachment member extending radially outward from the slot floor and configured to engage a topstick positioned in the slot opening and the slot sidewall includes a shoulder configured to engage the topstick, preventing radially outward movement of the topstick. | 02-02-2012 |
20120032538 | ROTATIONAL ELECTRICAL MACHINE AND VEHICLE DRIVE DEVICE - A rotating electrical machine configured with a rotor and stator. The rotor is rotatably supported radially inside of a stator that has coil end portions on both sides in an axial direction, and which is structured so that oil is supplied from an axial first direction side to the coil end portions on the both sides in the axial direction. A communication oil passage provided in at least one of the rotor and the rotor support member, is configured to communicate with a first opening and a second opening from an oil collecting portion. The first opening opens radially inside the coil end portion on the axial first direction side, and the second opening opens radially inside the coil end portion on an axial second direction side, which is the other side in the axial direction of the rotor. | 02-09-2012 |
20120043835 | MATERIAL MATRIX FOR COOLING MEDIA ENHANCEMENT - An electric machine includes: a stator having stator windings; a rotor configured to interact electromagnetically with the stator; and a housing configured to house the stator and the rotor. A material matrix is disposed within the housing and in contact with the stator windings. The material matrix defines a plurality of passages configured for the cooling fluid to flow within to remove heat from the stator windings. | 02-23-2012 |
20120043836 | Disk Style Centrifugal Pump - An electric machine system includes an electric motor and an oil pump disposed within a housing. The oil pump is configured to disperse oil in a pattern about a rotational axis within the electric motor. A method for operating the electric machine system is also disclosed. | 02-23-2012 |
20120062055 | COOLING STRUCTURE FOR ROTATING ELECTRIC MACHINE - A cooling structure for a rotating electric machine, having a coolant supply portion, and configured to supply a coolant to a coil end portion of a stator. A protrusion portion is provided on a portion of a coil end facing area, and projects toward the coil end portion side and extends downward and toward a radially inner side of the coil end portion, wherein the coil end facing area is a section that faces the coil end portion on an inner wall surface of a case that accommodates the stator. A collection portion collects the coolant distributed along the protrusion portion. A drip portion is disposed on the radially inner side of the coil end portion at a position that axially overlaps with the coil end portion as viewed from the radial direction, wherein the coolant collected in the collection portion drips from the drip portion. | 03-15-2012 |
20120074798 | Electromagnetic Rotary Machines Having Modular Active-Coil Portions and Modules For Such Machines - Electromagnetic rotary machines, such as electrical power generators and electric motors, that have one or more active portions modularized into a set of modules. Each of the modules is secured to a support frame via a sliding-interlock system that allows that module to be slidingly engaged with the support frame. In some embodiments, each module can include an integrated coolant conduit that carries a coolant to cool the active portion during operation. The modules can each be self-contained in the respect that essentially all that needs to be done to form the active portion and corresponding portion of the cooling system is to install the modules and make any remaining electrical and coolant conduit connections. | 03-29-2012 |
20120091834 | Split Drain System and Method for an Electric Machine Module - Embodiments of the invention provide an electric machine module including module housing with an inner wall and at least one end cap. The module can at least partially define a machine cavity. The electric machine module can also include at least two drain holes positioned substantially circumferentially apart from one another and extending through a lower portion of the module housing. The at least two drain holes can provide gravity-fed fluid pathways out of the machine cavity. | 04-19-2012 |
20120091835 | Motor-Generator Cooling System of Hybrid-Automobile - A motor/generator cooling system of a hybrid vehicle that has a first and second motor/generator disposed in an axial direction in a transmission, may include a cooling pipe that may be disposed in an axial direction along an upper and outside of the first and second motor/generator in the transmission, a rear cover that may be connected to a downstream side of the cooling pipe such that the cooling pipe may be fixed thereto, an input supporter that may be connected to an upstream side of the cooling pipe, forms a cooling oil passage, and rotatably supports a rotor of the first motor/generator, and a case that the rear cover and the input supporter may be mounted thereon, an oil filter connected to a hydraulic pump may be mounted therein, a penetration hole may be formed therein, and the cooling pipe penetrates the penetration hole to be fixed thereto. | 04-19-2012 |
20120091836 | HEAT-GENERATING PORTION COOLING STRUCTURE OF VEHICLE DRIVE APPARATUS - A heat-generating portion cooling structure of vehicle drive apparatus that sufficiently supplies cooling oil to heat-generating portions to enhance efficiency of the vehicle drive apparatus when the heat-generating portions generate maximum heat includes drawing means for drawing oil in a case into a catch tank, and an oil circulation passage for circulating the oil through the catch tank while supplying the oil to first and second heat-generating portions. The oil circulation passage includes a first passage for the oil to flow to the first heat-generating portion when the oil surface in the catch tank is at a first height and a second passage for the oil to flow to the second heat-generating portion when the oil surface is at a second height lower than the first height, and more amount of oil flows to the second heat-generating portion than to the first heat-generating portion when the oil surface is low. | 04-19-2012 |
20120091837 | GENERATOR COOLING ARRANGEMENT OF A WIND TURBINE - The invention relates to a stator ( | 04-19-2012 |
20120091838 | COOLING STRUCTURE FOR ROTARY ELECTRIC MACHINE - A cooling structure for a rotary electric machine uses coolant to cool coil end portions that protrude outward, one from each end surface of a stator core, in a stator that includes a stator core and coils that are wound in a circumferential direction of the stator core. This cooling structure includes a lead side cover member that covers a lead side coil end portion to which a lead wire that supplies electricity to the coils is connected, and forms a first coolant chamber within which coolant is stored; and a non-lead side cover member that covers a non-lead side coil end portion positioned opposite the lead side coil end portion in the axial direction, and forms a second coolant chamber within which coolant is stored. A coolant communicating path is provided that communicates the first and second coolant chambers in a manner that enables coolant to flow therebetween. | 04-19-2012 |
20120104883 | DRIVE MODULE AND MANIFOLD FOR ELECTRIC MOTOR DRIVE ASSEMBLY - A coolant fluid distributing manifold for a drive module in an electric motor drive assembly includes a body and passageways in the body for distributing coolant fluid to components of the drive module. The passageways define a delivery conduit and a return conduit. | 05-03-2012 |
20120104884 | ELECTRIC MOTOR AND METHOD OF COOLING - A system for cooling an electric motor, the electric motor including a stator disposed about a rotor, wherein cooling system includes a rotor assembly including a shaft with a shaft channel extending through the center of the shaft and radial channels extending radially from the shaft channel; a rotor with profiled rotor ends; and two guides, each coupled to a rotor end, that guides fluid from the shaft exterior to the rotor end. The system may additionally include interior channels that traverse through the rotor interior, wherein the interior channels fluidly couple the radial channels to a guide-rotor end pair. The system may also include stator cooling mechanisms, including cooling channels within the motor casing proximal to stator exterior surface and dispensing mechanisms that dispense working fluid to the stator coils. | 05-03-2012 |
20120112568 | COOLING SYSTEM FOR AN ELECTRIC MACHINE SYSTEM INCLUDING AN ALTERNATING CURRENT (AC) ELECTRIC MACHINE HAVING AN INTEGRATED SWITCH ASSEMBLY - An electric machine system includes an alternating current (AC) electric machine. The AC machine includes a machine housing having a machine portion and a switch portion. A stator is fixedly mounted in the machine portion of the machine housing and a rotor rotatably mounted relative to the stator. A switch assembly is arranged within the switch portion of the machine housing and electrically connected to the stator. A direct current (DC) power source is electrically connected to the stator through the switch assembly. A cooling system is fluidly connected to the AC electric machine. The cooling system directs a flow of coolant onto the switch assembly in the switch portion of the machine housing, and onto at least one of the stator and the rotor in the machine portion of the machine housing. | 05-10-2012 |
20120112569 | Magnetic Cap Element for a Stator of a Generator - A stator system for a generator, in particular a generator of a wind turbine is disclosed. The stator system includes a housing element including a groove and a cap element for closing the groove such that a channel for guiding a cooling fluid within the groove is formed. The cap element includes a magnetic material. | 05-10-2012 |
20120112570 | Water cooled electric machine - A plate for tightening a stator housing segment of an electric machine is disclosed. The plate is mountable to an axial front face of the stator housing segment. The plate includes a fluid channel formed in such a way that, when the plate is attached to the axial front face of the stator housing segment, the fluid channel connects an opening of a cooling channel within the stator housing segment with a supply system for cooling fluid. | 05-10-2012 |
20120119602 | Cooling of Permanent Magnet Electric Machine - A permanent magnet electric machine includes a rotor having a plurality of permanent magnets and a stator in magnetic communication with the rotor and positioned defining a radial air gap between the rotor and the stator. A housing is configured to seal the rotor and the stator from an outside environment. A pumping element is configured to urge a closed loop airflow across the plurality of permanent magnets to remove thermal energy therefrom, and a plurality of cooling channels are located in the housing and are configured to transfer thermal energy from the stator to a flow of fluid coolant through the plurality of cooling channels. A heat exchanger is located in thermal communication with the plurality of cooling channels to transfer thermal energy from the airflow to the fluid coolant. | 05-17-2012 |
20120126641 | STATOR COOLING DEVICE - A stator cooling device configured with a cylindrical stator main body that uses a rotation axis of a rotary electric machine as a central axis. A fixed portion is formed on an outer peripheral portion of the stator main body so as to protrude outward in a radial direction of the stator main body. A cooling medium flow passage includes an injection hole through which cooling medium is injected. The fixed portion is configured above a horizontal plane that passes through the central axis, and a peak portion that is farthest in the fixed portion from the central axis as viewed in an axial direction of the central axis. The injection hole opens toward the fixed portion above the outer peripheral portion of the stator and toward the first vertical plane side with respect to a second vertical plane that is a vertical plane that passes through the peak portion. | 05-24-2012 |
20120126642 | ELECTRIC MOTOR - An electric motor has a rotor, stator, and covers. A stator coil is a pre-wound coil inserted into slots of a stator core from its inner side. A no-lead-wire side coil end portion of the stator coil protrudes radially inward. A no-lead-wire side coolant chamber is liquid-tightly defined by the cover covering the no-lead-wire side coil end portion and a seal plate(s) that is attached from or on a radially inner side of the stator core so as to cover an opening between the inner peripheral edge of the cover and the inner peripheral edge of the stator core. | 05-24-2012 |
20120133221 | DUAL-ROTOR MOTOR HAVING HEAT DISSIPATION - An electric motor may include an outer rotor and an inner rotor, with a stator, which carries the excitation coils, formed as a hollow cylinder and engaging in the pot-shaped outer rotor and being connected to the housing or to a part of the electric motor fixedly connected to the housing, and where the electric motor may further include a water cooling and an air cooling system. | 05-31-2012 |
20120139370 | METHOD OF COOLING STARTER GENERATOR STATOR - A housing for a generator stator has a port through the housing and communicates with a channel extending circumferentially across an inner bore of the housing. The channel extends for a depth along a first distance. An inner bore of the housing is at a radius. A ratio of the depth to the radius is between 0.018 and 0.035. In addition, a generator including the basic cooling structure, and a method of assembling the generator are also disclosed. | 06-07-2012 |
20120161553 | WATER-COOLING STRUCTURE FOR ELECTRIC MOTOR - A water-cooling structure for electric motor includes a motor main body, a heat-dissipation base, and a vortex-forming section. The motor main body is externally fitted around the heat-dissipation base. The heat-dissipation base is provided around an outer circumferential surface with at least one main flow passage. The vortex-forming section is provided in the main flow passage to create vortex effect on a type of cooling liquid flowing in the main flow passage, so as to enable an increased heat transfer efficiency of the water-cooling structure. | 06-28-2012 |
20120161554 | COOLING SYSTEM FOR A HIGH DENSITY POWER MOTOR, IN PARTICULAR AN AXIAL-FLUX MOTOR - A cooling system for a high density power motor, in particular an axial-flux electric motor, wherein a pump is directly fitted in an axial position on the output shaft of the electric motor and feeds at outlet a flow of liquid coolant directed towards a first heat exchanger coupled to a power electronic supply circuit of said motor; the first heat exchanger having at least one outlet from which the liquid coolant is fed to a second heat exchanger coupled to the windings of the electric motor for cooling the electric motor itself; the cooling system carrying out in succession removal of the heat from the power electronic supply circuit and then from the electromagnetic part of the motor. | 06-28-2012 |
20120161555 | Rotating Electrical Machine - A rotating electrical machine includes: a stator that includes a stator core and a stator coil; a rotor that rotates with respect to the stator; a refrigerant supply port through which a cooling medium is supplied to a coil end protruding from the stator core; and a guide member, disposed along at least a part of the coil end, for causing the cooling medium supplied through the refrigerant supply port to flow along the coil end. | 06-28-2012 |
20120169157 | COOLING MODULE AND WATER-COOLED MOTOR SYSTEM USING THE SAME - A cooling module and a water-cooled motor system using the same are provided. The cooling module comprises a main body and a first flow passage assembly. The main body comprises a first lateral portion and a second lateral portion opposite the first lateral portion. The first flow passage assembly, disposed in the main body, comprises a first flow passage and a second flow passage. The first flow passage has a first end and a second end, wherein the first end is adjacent to the first lateral portion, and the second end is adjacent to the second lateral portion. The second flow passage has a third end and a fourth end, wherein the third end is connected to the second end of the first flow passage, and the fourth end is adjacent to the first lateral portion. | 07-05-2012 |
20120169158 | COOLING SYSTEM FOR AN ASYNCHRONOUS ROTOR - The invention relates to a cage rotor for an asynchronous machine ( | 07-05-2012 |
20120181884 | ELECTRIC MACHINE HAVING AN INTEGRATED COOLANT LEVEL SENSOR - An electric machine includes a housing having a coolant collection area, a stator mounted within the housing, a rotor assembly rotatably mounted within the housing relative to the stator, and a coolant level sensor arranged at the coolant collection area. The coolant level sensor includes a sensing surface configured and disposed to detect a level of coolant collected in the coolant collection area. | 07-19-2012 |
20120194012 | Electric Machine Cooling System and Method - Some embodiments of the invention provide an electric machine module comprising an electric machine including a rotor assembly and a rotor hub. In some embodiments, the module can include a output shaft substantially circumscribed by the rotor hub and including at least one channel and at least one coolant outlet. A cavity can be formed by at least the output shaft and the rotor hub. Some embodiments can include a sleeve substantially circumscribing a portion of the output shaft with at least a portion of the sleeve positioned substantially within the cavity between the output shaft and the rotor hub. The sleeve can include at least one groove. | 08-02-2012 |
20120194013 | ROTATING ELECTRICAL MACHINE - A rotating electrical machine according to an embodiment includes a rotor rotatable around a rotation axis, a stator arranged to face the rotor, and a frame which accommodates the rotor and the stator and in which a refrigerant flow path is formed in a sidewall. The frame includes a through hole that penetrates from the refrigerant flow path to an outer periphery of the sidewall and is covered by a lid member. | 08-02-2012 |
20120205994 | FLOODED VARIABLE SPEED ELECTRIC MACHINE WITH VARIABLE FLOW - An electric machine includes a rotor, a stator, and an air gap defined by a space between the rotor and a stator. A volume of cooling fluid is located in the air gap and in contact with both the rotor and the stator. A method for cooling the electric machine includes sensing speed of the electric machine and varying the volume of coolant located in the air gap in response to the sensed speed of the electric machine. | 08-16-2012 |
20120205995 | Electric Generator - The invention relates to an electric generator, comprising
| 08-16-2012 |
20120205996 | ELECTRICAL MACHINE - The invention relates to an electric machine ( | 08-16-2012 |
20120212082 | COOLING OF PERMANENT MAGNET ELECTRIC MACHINE - A cooling system for a sealed permanent magnet electric machine includes a fan element configured to urge an airflow across a plurality of permanent magnets of a rotor of the electric machine to remove thermal energy therefrom. A plurality of cooling channels are located in a housing of the electric machine and are configured to transfer thermal energy from a stator of the electric machine to a flow of liquid coolant through the plurality of cooling channels. A heat exchanger is located in thermal communication with the plurality of cooling channels to transfer thermal energy from the airflow to the liquid coolant. One or more coolant supply conduits are configured to divert a portion of the airflow from the heat exchanger to an ancillary component of the electric machine to allow for transfer of thermal energy from the ancillary component to the airflow. | 08-23-2012 |
20120212083 | COOLING OF PERMANENT MAGNET ELECTRIC MACHINE - A cooling system for a sealed permanent magnet electric machine includes one or more flow driving devices disposed at a rotor of the electric machine configured to urge an airflow across a plurality of permanent magnets of the rotor and across a plurality of stator end turns of the electric machine to remove thermal energy therefrom. A plurality of cooling channels are located in the electric machine in thermal communication with the stator configured to transfer thermal energy from the stator to a flow of fluid coolant through the plurality of cooling channels. A heat exchanger is in thermal communication with the plurality of cooling channels to transfer thermal energy from the airflow to the fluid coolant. | 08-23-2012 |
20120212084 | HIGH PERFORMANCE POWER GENERATION APPARATUS - A high performance power generation apparatus includes a first rotary member and a second rotary member. The first rotary member has a spindle and a rotor fastened to the spindle. The spindle has a first gear coupled thereon. The rotor has a first electromagnetic portion. The second rotary member has an internal gear ring and a second electromagnetic portion. The first gear and internal gear ring are interposed by at least one transmission gear. When the spindle drives the rotor and first gear to spin, the first gear drives the second rotary member to spin in the direction opposite to the first rotary member via the transmission gear so that the induction coil and magnet can interact at greater relative spinning speed to generate a greater amount of electric power output. | 08-23-2012 |
20120217825 | VEHICLE DRIVE SYSTEM - A vehicle drive system includes a rotor support that is more radially inward than the stator and supports the rotor; a supply that supplies oil to the rotor support bearing, the rotor support bearing includes a discharge that discharges oil supplied from the supply, the rotor support includes an opposing surface that opposes the discharge-side surface, and an opposing extension surface that extends radially from the opposing surface. The stator includes a coil end that protrudes from the stator core toward the first axial direction. A radial outer end of the opposing extension surface is more radially inward than, and overlaps with, the coil end, with a radial space between the radial outer end and the coil end. The discharge-side surface is disposed more toward the second axial direction than the radial outer end of the opposing extension surface. | 08-30-2012 |
20120217826 | COOLING DEVICE - A cooling device includes an inner sleeve with an outer surface, an outer sleeve surrounding the inner sleeve, and two end portions extending between the inner sleeve and the outer sleeve at the ends. The inner sleeve, the outer sleeve and the end portions define a peripheral space. A flow guiding structure defines N channels in the peripheral space for coolant to flow, where N is an integer equal to or greater than 1. Each channel has at least two branches, and N pairs of inlet and outlet corresponding to the N channels. The branches of each channel are in fluid communication with a respective pair of inlet and outlet. Each branch extends over a half circumferential part of the outer surface of the inner sleeve. An electric motor incorporating the cooling device is also provided. | 08-30-2012 |
20120235521 | Electric Machine And Oil Cooling Method For Electrical Machine - An electrical machine comprises a casing ( | 09-20-2012 |
20120242178 | ROTATING ELECTRICAL MACHINE - A rotating electrical machine includes: a rotor whose axis is disposed in a horizontal direction, a stator core that is disposed in an outside of the rotor, a coil that is wound in a slot which is provided along the axial direction of the stator core, whose end sections of windings protrude from a front end and a rear end of the stator core in the axial direction as coil ends and whose one end of a winding wire is drawn as a lead wire to the outside, and an annular cooling jacket. The cooling jacket has an opening through which the lead wire of the coil is drawn to the outside and the opening is provided at a predetermined height position above an upper end of the coil end as a reference position. | 09-27-2012 |
20120248904 | UNIFORM CONTAINED COOLING FOR STATOR - A liquid-cooled stator and rotor assembly for use as an electric motor or generator includes a housing having a first end bell, a second end bell, and at least one fluid orifice in the first end bell. A stator is fixed within a stator cavity of the housing. The stator includes a stator core and a plurality of windings for conducting a flow of electricity. A rotor for magnetically interacting with the stator is also included, the rotor being rotatably mounted between the first end bell and the second end bell within a rotor cavity. A first sealing ring and a second sealing ring are provided to form a fluid seal against the respective end bells and against a portion of the stator such that a cooling fluid entering the stator cavity via the orifice does not enter the rotor cavity. | 10-04-2012 |
20120248905 | ELECTRIC DRIVE UNIT - An electric drive unit for a motor vehicle has an electric machine and a lubrication and cooling circuit. The lubrication and cooling circuit includes an aqueous lubricant, which is passed at least through an internal area of the electric machine, in order to cool parts of the electric machine in the internal area. | 10-04-2012 |
20120256501 | OIL COOLED GENERATOR - An oil cooled generator may have stator windings with first portions in contact with a stator core and second non-contact portions. One or more nozzles may be configured to provide a spray pattern of oil which impinges on the non-contact portions even though the nozzles may have orifices oriented so that the lines projected in alignment with longitudinal axes of the orifices do not intersect the non-contact portions of the stator windings. | 10-11-2012 |
20120256502 | Stator Arrangement - A stator arrangement for an electrical machine includes a stator having a stator stack consisting of a plurality of axially adjacently disposed metal plates. The arrangement further includes a cooling device in the shape of at least one heat pipe. The at least one radial channel extends between respective axially adjacently disposed metal plates, wherein the at least one heat pipe is located within the at least one radial channel. | 10-11-2012 |
20120262012 | ELECTRIC MACHINE MODULE COOLING SYSTEM AND METHOD - Embodiments of the invention provide an electric machine module including a housing. The housing can include an inner surface that defines a machine cavity. In some embodiments, an electric machine can be at least partially positioned within the machine cavity and can include a stator assembly. The stator assembly includes an outer diameter, a stator core, and a stator winding. The stator core can include at least two extended members that can radially extend from axial ends of the stator core. An annular member is coupled to the extended members to define a portion of a coolant jacket. The coolant jacket can be further defined between the annular member, the outer diameter of the stator assembly, and the extended members. The electric machine can be positioned within the housing so that the annular member is immediately adjacent to the inner surface. | 10-18-2012 |
20120267969 | EXTERNAL COVER-COOLED ROTARY ELECTRIC MACHINE AND CASING USED THEREIN - A center frame is fastened to a first bracket and a second bracket such that a first mated protrusion and a second mated protrusion are fitted together with a first mated recess portion and a second mated recess portion so as to be mated. O rings are disposed annularly so as to be held between an end surface of the first bracket and a first axial end surface of the center frame, and between an end surface of the second bracket and a second axial end surface of the center frame on an opposite side from outer circumferential inner wall surfaces of the first mated recess portion and the second mated recess portion. | 10-25-2012 |
20120267970 | Coolant Flow Channel Arrangement for a Fluid Cooled Electric Motor - An improved fluid cooling arrangement for an electric machine, such as an electric motor, a generator, or a motor/generator assembly, is provided. In its most general sense, the fluid-cooled electric machine includes a rotor disposed on a motor shaft, a stator surrounding the rotor, and a motor housing surrounding the stator, with the stator formed of a laminated stack of stator plates that is plated at its outer surface. | 10-25-2012 |
20120274159 | COOLING ARRANGEMENT FOR AN ELECTRIC MACHINE - The electric machine includes a stator. The stator includes stacked lamination plates. The lamination plates form at least two lamination packages. The electric machine includes a first cooling circulation with a first cooling fluid. The stator of the electric machine includes a second cooling circulation with a second cooling fluid. A heat exchanger is part of the second cooling circulation and is arranged to connect the first cooling circulation and the second cooling circulation. Thus heat is transferred from the first cooling fluid to the second cooling fluid. A spacer element is arranged between the two lamination packages. The spacer element is prepared to set a predetermined distance between the lamination packages, thus the first cooling fluid is allowed to flow between the lamination packages. The heat exchanger arrangement is an integral or at least partly integrated part of the spacer elements. | 11-01-2012 |
20120274160 | ROTARY ELECTRIC MACHINE WITH AIR GAPS CONFIGURED TO CANCEL TORQUE PULSATIONS - A rotary electric machine includes a stator having stator windings; and a rotor rotatably disposed in the stator, said rotor having a rotor core provided with a plurality of magnets and a plurality of magnetic auxiliary salient poles formed between poles of the magnets. In this rotary electric machine: a magnetic air gap is provided in an axial direction of the rotor in a position shifted in a circumferential direction from a q axis passing through a center of the magnetic auxiliary salient pole within the magnetic auxiliary salient pole; and an amount of shifting the magnetic air gap from the q axis in the circumferential direction differs according to a position of the magnetic air gap in the axial direction so as to cancel torque pulsation in energization caused due to the magnetic air gap. | 11-01-2012 |
20120286595 | ENHANCED DUAL LIQUID COOLING SYSTEM FOR ELECTRIC MOTOR - An electric machine includes a rotor within a cavity defined within a stator. A liquid coolant is utilized to cool the stator and rotor. The liquid coolant flows through a gap defined between the stator and the rotor. A second coolant is provided that is contained within a second cavity disposed annularly about the first cavity. Thermal energy is transferred away from the gap by way of the first coolant flowing through the gap and by natural convection of the second liquid coolant within the second cavity. The additional mechanism for transferring heat enhances electric machine operation and provides increased operational capacities. | 11-15-2012 |
20120313465 | ELECTRIC DRIVE UNIT - An electric drive unit includes a stator which is received in a metal housing, and a rotor rotates within the stator. A synthetic material housing is arranged on the metal housing in the region of the stator, the synthetic material housing forming at least one cooling channel for a cooling fluid in order to cool the stator via the metal housing. | 12-13-2012 |
20130002064 | ELECTRICAL MACHINE - An apparatus, such as an electrical machine, is provided. The apparatus can include a rotor defining a rotor bore and a conduit disposed in and extending axially along the rotor bore. The conduit can have an annular conduit body defining a plurality of orifices disposed axially along the conduit and extending through the conduit body. The rotor can have an inner wall that at least partially defines the rotor bore. The orifices can extend through the conduit body along respective orifice directions, and the rotor and conduit can be configured to provide a line of sight along the orifice direction from the respective orifices to the inner wall. | 01-03-2013 |
20130002065 | TOTALLY-ENCLOSED HORIZONTAL ROTATING ELECTRIC MACHINE - In a totally-enclosed horizontal rotating electric machine in which a rotor horizontally arranged and a stator arranged at an outer circumference side of the rotor are hermetically sealed in a main frame, and the rotor and the stator are cooled by circulating refrigerant gas, which is encapsulated in the main frame, through a refrigerant passageway, and water-cooled heat exchangers for cooling the refrigerant gas are provided on the way of the refrigerant passageway, the heat exchangers are respectively arranged in a longitudinal direction at each of positions neighboring both left-right end portions at a front side and both left-right end portions at a rear side of the main frame, and a feed-water inlet and a drain outlet of cooling water are provided at an upper side of the heat exchangers. | 01-03-2013 |
20130002066 | LIGHTWEIGHT AND EFFICIENT ELECTRICAL MACHINE AND METHOD OF MANUFACTURE - A lightweight and efficient electrical machine element including a method of manufacture providing a stator winding for an electric machine which has a large portion of its volume containing electrically conductive strands and a small portion of its volume containing of an encapsulant material. The stator winding includes winding of a first phase ( | 01-03-2013 |
20130015729 | ENHANCED SPRAY COOLING TECHNIQUE FOR WEDGE COOLINGAANM Birdi; Balwinder SinghAACI TucsonAAST AZAACO USAAGP Birdi; Balwinder Singh Tucson AZ USAANM Waddell; SimonAACI Oro ValleyAAST AZAACO USAAGP Waddell; Simon Oro Valley AZ USAANM Scherzinger; WilliamAACI Oro ValleyAAST AZAACO USAAGP Scherzinger; William Oro Valley AZ US - A wedge cooling apparatus and method for cooling a rotating machine, such as a generator, disperses a spray of cooling fluid into the wedges of the generator via a pipe that runs along the length of each of the wedges. The pipe may include a plurality of spray delivery devices to spray cooling fluid from the pipe to the inside of the wedges. The spray cooling method results in a high heat transfer coefficient of about 2000-3000 W/m | 01-17-2013 |
20130015730 | ENHANCED SPRAY COOLING TECHNIQUE FOR WEDGE COOLINGAANM Waddell; SimonAACI Oro ValleyAAST AZAACO USAAGP Waddell; Simon Oro Valley AZ USAANM Scherzinger; WilliamAACI Oro ValleyAAST AZAACO USAAGP Scherzinger; William Oro Valley AZ USAANM Birdi; Balwinder SinghAACI TucsonAAST AZAACO USAAGP Birdi; Balwinder Singh Tucson AZ USAANM Pearson; WayneAACI Oro ValleyAAST AZAACO USAAGP Pearson; Wayne Oro Valley AZ USAANM Kane; DavidAACI Oro ValleyAAST AZAACO USAAGP Kane; David Oro Valley AZ USAANM Phielix; TomAACI TucsonAAST AZAACO USAAGP Phielix; Tom Tucson AZ US - A wedge cooling apparatus and method for cooling a rotating machine, such as a generator, disperses a spray of cooling fluid into the wedges of the generator. The spray cooling method results in a high heat transfer coefficient of about 2000-3000 W/m | 01-17-2013 |
20130043747 | Electric Machine Cooling - Embodiments of the invention provide an electric machine module including an electric machine. The electric machine includes a rotor and a stator assembly. The machine includes an output shaft having a longitudinal axis that is circumscribed by a portion of the rotor. The output shaft may comprise an output shaft channel and the rotor may comprise a rotor channel, and the rotor and the output shaft channels may be in fluid communication. The machine further includes a coolant jacket at least partially within a sleeve member that circumscribes at least a portion of the stator assembly, and at least one pump mounted generally concentrically with respect to the output shaft, that is in fluid communication with the coolant jacket. The pump may be internal to the machine, mounted at an interface between the inside and outside of the machine, or alternatively, it may be externally mounted. | 02-21-2013 |
20130049496 | Electric Machine Module Cooling System and Method - Embodiments of the invention provide an electric machine module. The module can include a housing, which can define a machine cavity. In some embodiments, an electric machine can be positioned within the machine cavity. In some embodiments, the electric machine can include a stator assembly including potted stator end turns. An end turn member can be positioned within the machine cavity and can include a radially inward flange and a radially outward flange axially extending from a central region. The end turn member is configured and arranged so that the flanges are substantially adjacent the stator end turns. The end turn member can include at least one second member aperture disposed through a portion of the central region. | 02-28-2013 |
20130049497 | GEAR-INTEGRATED ELECTRIC MOTOR AND ELECTRIC VEHICLE - A gear-integrated electric motor is provided with a motor ( | 02-28-2013 |
20130069455 | ELECTRIC MACHINE MODULE COOLING SYSTEM AND METHOD - Embodiments of the invention provide an electric machine module. The module can include a housing, which can define a machine cavity. In some embodiments, a stator assembly can be positioned within the machine cavity. In some embodiments a transfer member can substantially contact at least a portion of the stator end turns. The transfer member can be in thermal communication with some of the stator end turns and a portion of the housing. In some embodiments, the transfer member can include a substantially non-liquid first element and a substantially liquid second element. | 03-21-2013 |
20130069456 | Electric Motor for Construction Machinery, and Cooling Circuit for Electric Motor - A cooling circuit for an electric motor for a construction machine includes a circulation line that includes a shaft-side line disposed in a rotor shaft of the electric motor, a pump that supplies cooling fluid to the circulation line, a first filter disposed between the pump and the shaft-side line in the circulation line, a first bypass line that bypasses the first filter so as to connect an upstream side and a downstream side of the first filter, and a first relief valve disposed in the first bypass line. | 03-21-2013 |
20130076166 | ELECTRIC MACHINE MODULE COOLING SYSTEM AND METHOD - Embodiments of the invention provide an electric machine module. The module can include a housing that can define a machine cavity. The sleeve member can include a first and a second axial end. The sleeve member can further include a first coolant jacket and a first seal element coupled to the sleeve member substantially adjacent to the first axial end to substantially seal at least a portion of the first coolant jacket. The sleeve member can include a second coolant jacket and a second seal element coupled to the sleeve member substantially adjacent to the second axial end to substantially seal at least a portion of the second coolant jacket. The module can include a stator assembly positioned within the machine cavity so that portions of the first and second coolant jackets substantially circumscribe portions of the stator assembly. | 03-28-2013 |
20130076167 | Cooling system and method for electronic machines - Embodiments of the invention provide an electric machine module including a housing. The housing can include a first and a second end cap. The first end cap can comprise a first and a second manifold and an inlet and outlet. The inlet and outlet can be in fluid communication with the first manifold and the second manifold, respectively. The second end cap can include a third manifold. The module can include an electric machine operatively coupled to the housing. The electric machine can include a stator assembly. The stator assembly can comprise at least one first and at last one second coolant member disposed within the stator assembly. The electric machine can be coupled to the housing so that the first coolant member can be in fluid communication with the first and third manifolds and the second coolant member can be in fluid communication with the second and third manifolds. | 03-28-2013 |
20130076168 | DYNAMOELECTRIC MACHINE HAVING AIR/LIQUID COOLING - A dynamoelectric machine includes a stator having a laminated core and a winding system, which forms winding heads on end faces of the stator, and a rotor having a laminated core and connected to a shaft in a rotationally fixed manner. The stator and the rotor are arranged in a housing, and the shaft is supported by bearings arranged in bearing shields. The laminated core of the stator and/or rotor has axially extending cooling channels. The bearing shields form with the housing a closed interior having at least one closed inner cooling circuit. The housing has an outer jacket and an inner jacket facing the stator and arranged at a distance from the outer jacket in some sections. The outer jacket and the inner jacket combined form a cooling jacket defined by an axial extension which equals at least the axial extension of the laminated core of the stator. | 03-28-2013 |
20130088102 | ELECTRIC MACHINE MODULE - Embodiments of the invention provide an electric machine module including an electric machine positioned with a housing. The brushless electric machine includes a center axis of rotation and a support member coupled to the housing. The module also includes a cooling system, which includes an inlet disposed through a portion of the housing, a first channel positioned within the support member that fluidly connects a second channel with the inlet. The housing also includes a drain aperture and a drain guide disposed substantially adjacent to the drain aperture. | 04-11-2013 |
20130088103 | Synchronic Wind Turbine Generator - A synchronic generator comprises at least a stator and at least two windings placed opposite and parallel to its rotation axis and at least a refrigeration system. The design of this generator allows a better use of the space close to the external diameter of the generator, allowing a power increase and minimizing the weight without increasing the external diameter of the generator. Depending on wind conditions, one or both windings can work at the same time, which optimizes yield, versatility and reliability. | 04-11-2013 |
20130119793 | ELECTRIC DRIVE UNIT - An electric drive unit includes an electric motor, which has a stator and a rotor, a gearbox, an electric circuit and a housing. The housing forms a motor compartment in which the electric motor is arranged and a gearbox chamber in which at least a part of the gearbox is arranged. The electric drive unit also includes a lubricating circuit in which a lubricating fluid is conveyed in order to lubricate and cool the gearbox and the rotor of the electric motor, the lubricating fluid circulating between the motor compartment and the gearbox chamber. The drive unit further includes a cooling circuit in which a cooling fluid is conveyed in order to cool the electric circuit and also the stator of the electric motor. The cooling fluid of the cooling circuit is connected to the lubricating fluid of the lubricating circuit in such a manner as to be able to exchange heat. | 05-16-2013 |
20130127269 | METHOD OF OPERATING AN ELECTRIC MACHINE HAVING AN INTEGRATED COOLANT LEVEL SENSOR - A method of operating an electric machine includes flowing a coolant into an interior portion of a housing of the electric machine, and sensing a level of coolant in a coolant collection area within the interior portion with a coolant level sensor arranged at the housing. | 05-23-2013 |
20130140923 | ELECTRIC MACHINE COOLING STRUCTURE - A housing surrounding a stator or a rotor includes an annular cooling chamber, which is formed within the housing and defines a circumferential fluid path around the stator or rotor. A fluid inlet and a fluid outlet are communication with the annular cooling chamber. A primary divider separates the fluid inlet from the fluid outlet. | 06-06-2013 |
20130147289 | ELECTRIC MACHINE MODULE COOLING SYSTEM AND METHOD - Some embodiments of the invention provide an electric machine module. The module can include a housing, which can define a machine cavity. In some embodiments, a coolant jacket can be at least partially positioned within the housing. Some embodiments include a sleeve member at least partially surrounding the coolant jacket. In some embodiments, a stator assembly including stator end turns can be at least partially disposed within the housing and can be at least partially circumferentially surrounded by the coolant jacket. Some embodiments provide at least one coolant apertures being in fluid communication with the coolant jacket. Some embodiments can include at least one end turn cavity at least partially surrounding a stator end turn and fluidly coupled to the coolant jacket via at least one coolant aperture. In some embodiments, the at least one end turn cavity is in fluid communication with the coolant jacket and the machine cavity. | 06-13-2013 |
20130147290 | MAGNETIC STEEL COOLING STRUCTURE FOR PERMANENT MAGNETIC MOTOR OF ELECTRIC VEHICLE AND COOLING METHOD THEREOF - A magnetic steel cooling structure for permanent magnetic motor of electric vehicle, which comprises a rotor core, magnet steels, and at least one heat pipe, the magnet steels are mounted in the rotor core, the heat pipe has an inner cavity inside which is contained a phase change material, the heat pipe is mounted in the rotor core and the outer wall of the heat pipe is contacted with the rotor core tightly, the inner cavity is inclined with respect to the axis of the rotor core | 06-13-2013 |
20130169077 | ELECTRIC ROTARY MACHINE - An electric rotary machine has a motor frame having a cooling fluid passage, a rotary shaft rotatably supported by the motor frame, a rotor fixed to the rotary shaft, and a stator. The stator has a core having a ring shape and a stator winding wound around the core. The stator core is arranged to face an outer periphery of the rotor in a radial direction. An inlet section and an outlet section are formed in the motor frame. Cooling fluid is introduced into the cooling fluid passage through the inlet section and discharged from the outlet section. A partition wall section is formed on the motor frame and divides the cooling fluid passage into a cooling fluid inlet passage and a cooling fluid outlet passage. Through an opening formed in the partition wall section, the cooling fluid inlet passage and the cooling fluid outlet passage communicate with each other. | 07-04-2013 |
20130169078 | SYSTEMS AND METHODS TO TRANSFER HEAT WITH ELECTRIC DEVICES - An electric device is disclosed capable of generating heat during operation. The electric device can be in thermal communication to dissipate the heat through the use of carbon nanotubes and/or a phase change material. In one form the electric device includes a housing that has the carbon nanotubes. The housing, furthermore, can be a composite that in some embodiments does not provide as effective heat transfer as the carbon nanotubes. The electric device can take the form of a power electronic device in some embodiments and a device having a rotor and stator in others. Such embodiments include motors and/or generators. | 07-04-2013 |
20130187491 | ROTOR FOR AN ELECTRIC MACHINE - A rotor form electric machine is provided including a rotor body that rotates about an axis of rotation, the rotor body having a superconducting rotor winding and cooling arrangement provided for cooling the rotor winding having at least one pair of cooling tube loops disposed substantially radially opposite each other on the rotor body, wherein a cryogenic coolant is transported in the axial direction in the coolant tube loops from a first axial rotor end to a second, opposite axial rotor end and back when the rotor rotates about the axis of rotation. One or more connecting tubes are provided in the cooling arrangement and connect one cooling tube loop to the other cooling tube loop of the at least one pair of cooling tube loops. | 07-25-2013 |
20130187492 | WHEEL-HUB MOTOR COOLING - A wheel-hub motor ( | 07-25-2013 |
20130193786 | SR MOTOR ALTERNATIVE COOLING DEVICE AND METHOD - A system for cooling an electrical machine is disclosed. The electrical machine includes a rotor, a stator, and at least one cooling pathway extending through the stator. During operation of the electrical machine, fluid flows through the pathway and carries away heat generated by the electrical machine. | 08-01-2013 |
20130214624 | ELECTRIC MACHINE COOLING - Embodiments of the invention provide an electric machine module including an electric machine. The electric machine includes a rotor and a stator assembly, and an output shaft having a longitudinal axis that is circumscribed by a portion of the rotor. The output shaft may comprise an output shaft channel and the rotor may include a rotor channel, and the rotor and the output shaft channels may be in fluid communication. The machine further includes a coolant jacket at least partially within a sleeve member that circumscribes at least a portion of the stator assembly, and at least one pump mounted generally concentrically with respect to the output shaft, that is in fluid communication with the coolant jacket. Some embodiments of the electric machine module include coupling to a fluid system that is configured and arranged to transport fluid, such as the coolant, throughout the fluid system. | 08-22-2013 |
20130221772 | COOLING STRUCTURE OF ROTOR FOR ROTARY ELECTRIC MACHINE, AND ROTARY ELECTRIC MACHINE - A cooling structure of a rotor for a rotary electric machine includes: a rotatable shaft that is configured to supply coolant that flows inside the shaft to outside the shaft; a rotor core that is fitted onto the shaft and fixed thereto, and has a coolant flow path for flowing the coolant, in an axial direction of the rotary electric machine, that is supplied from the shaft, and is formed of a plurality of magnetic plates stacked together in the axial direction of the rotary electric machine; and a coolant impermeable nonmagnetic member that is provided in the rotor core near an inner circumferential surface on a radially outer side in a radial direction of the rotor core, of the inner circumferential surface of the coolant flow path. | 08-29-2013 |
20130234541 | Electric Motor Configured for Facilitated Washability - An electric motor having a casing positioned between a head end cap and a tail end cap is provided. An output shaft passes through the head end cap and the tail end cap and a cooling fan is mounted for rotation relative to the output shaft. The electric motor includes a fluid distribution chamber adjacent the tail end cap, an inlet port for supply of fluid to the chamber, and a plurality of discharge apertures for distributing fluid from the chamber toward the cooling fan. The fluid distribution chamber facilitates the washing and cleaning of the electric motor. | 09-12-2013 |
20130234542 | Liquid-Cooled Self-Excited Eddy Current Retarder With A Structure Of Two Salient Poles - A liquid-cooled self-excited eddy current retarder having two salient poles is provided. The liquid-cooled self-excited eddy current retarder may comprise a retarder rotor, a retarder stator, a retarder coil, a retarder generator and a control module. The retarder rotor may be a jugged turntable, and an axial cross section of the jugged turntable may be in an inverted h shape. Two projections at two sides of the jugged turntable may form two salient poles of the retarder rotor. The retarder rotor may be connectable to a transmission shaft, and an inner circle of the retarder stator may be coaxial with an outer circle of the retarder rotor. The retarder coil may be an independent coil and disposed between the two salient poles of the retarder rotor. The retarder coil may be affixed to the retarder stator. | 09-12-2013 |
20130234543 | ELECTRICAL MACHINE HAVING DUAL-CIRCUIT COOLING - An electrical machine includes a stator and a rotor which is pivotally mounted about an axis of rotation and interacts magnetically with the stator during operation of the electrical machine. The rotor has a rotor cooling system for cooling the rotor using a first coolant flow, and the stator is cooled by a stator cooling system using a second coolant flow. | 09-12-2013 |
20130234544 | OIL SEAL FOR DELCO REMY 50DN OIL COOLED, HEAVY DUTY AUTOMOTIVE ALTERNATOR - One possible embodiment of the invention could be an oil seal for a DELCO REMY 50DN heavy duty automotive alternator comprising a top collar; a bottom collar nested within the top collar to form a ring body; an annular polymer sealing member attaches to the top collar to form a mating flange that generally extends from an inner edge of the top collar to further denote a portion of an inner passage of the oil seal, the mating flange forming clockwise orientated splines to substantially denote a set return grooves in a spaced-apart, parallel, and clockwise orientation; wherein during alternator operations, a spacing collar spinning within the inner passage brings oil from the interior of the alternator into contact with the mating flange, the splines on the mating flange then direct the oil to the return grooves, which then direct the oil back towards the interior of the alternator. | 09-12-2013 |
20130241326 | LIQUID COOLED DYNAMOELECTRIC MACHINE - An electric motor includes an outer housing, a stator disposed within the outer housing and a rotor disposed within the stator that, in combination with the stator, defines a rotor-stator gap between them. The rotor includes a main rotor body and a rotor body extension extending axially from an end of the main rotor body. The main rotor body includes an axial hole formed at least partially along a length thereof. | 09-19-2013 |
20130241327 | MOTOR DRIVING DEVICE AND VEHICLE - This motor driving device includes a motor including a high speed drive coil and a low speed drive coil, a coil switching portion arranged in a direction along a rotating shaft of the motor with respect to the motor, a power converter arranged in a direction intersecting with the rotating shaft with respect to the motor, and a plurality of case portions storing at least the motor, the coil switching portion, and the power converter. The plurality of case portions are coupled with each other. | 09-19-2013 |
20130241328 | STATOR ELEMENT WITH COOLING ELEMENT ARRANGED ON THE BACKSIDE OF THE YOKE - A stator element is disclosed. The stator element includes a yoke including laminated metal plates and radially protruding teeth from one side of the yoke. A cooling cavity is arranged on a back side of the yoke. The cooling cavity provides a path for a flow of a cooling medium. A plated metal layer of the cooling cavity is disposed on the yoke only in a region where the cooling cavity contacts the back side of the yoke. The cavity is disposed in direct contact to the back side of the yoke. | 09-19-2013 |
20130257196 | MOTOR - A motor includes: a rotor including an output shaft; a stator provided with a coil wound around the stator; and a casing configured to accommodate the rotor and the stator and to contain a coolant liquid therein, wherein skews are formed in at least one of the rotor and the stator. A hollow portion extending an axial direction is formed in the output shaft. The hollow portion includes an opening that opens in the casing at an end surface of the output shaft where a liquid surface of the coolant liquid is relatively higher due to rotation of the rotor and that communicates with the casing near an end opposite to the end surface. | 10-03-2013 |
20130257197 | ELECTRIC MACHINE HAVING EFFICIENT INTERNAL COOLING - An electric machine includes a stator device having axial first cooling channels, and second and third cooling channels. The third cooling channels are arranged in the first cooling channels and extend at least substantially along an entire axial length thereof. The stator device is configured for inflow and outflow of a liquid cooling medium at least partially through the second cooling channels and for the liquid cooling medium to be conducted through the third cooling channels. A rotor is arranged on a rotor shaft for rotation around a rotational axis. Limiting elements are mounted on the stator device axially on both sides to thereby bound an internal rotor space which is in communication with axial ends of the first cooling channels of the stator device to thereby establish an internal air-cooling circuit from the internal rotor space through the first cooling channels and back into the internal rotor space. | 10-03-2013 |
20130257198 | Cooling System and Geared Motor - A cooling system for a geared motor, and a geared motor having electric motors and a gear unit as well as an adapter which is disposed between the electric motors and the gear unit, the electric motors having ducts for a coolant, in particular, a coolant, especially a cooling liquid, being able to flow through each of the motors which, in particular, are liquid-cooled, the streams of coolant emerging from the ducts being brought together and being fed at least proportionally by a first distributor to the gear unit in order to lubricate and cool the toothing parts of the gear unit. | 10-03-2013 |
20130270936 | SYSTEMS AND METHODS FOR DIRECT WINDING COOLING OF ELECTRIC MACHINES - A system and method for cooling electric machines using direct winding heat exchangers (DWHX) is disclosed. The system can comprise a plurality of DWHXs disposed in thermal communication with a plurality of copper windings in the stator of an electric machine for cooling the plurality of copper windings. The plurality of DWHXs can also be in fluid communication with one or more fluid manifolds for providing coolant to the plurality of DWHXs. The one or more manifolds can be in fluid communication with one or more heat reservoirs for rejecting the heat absorbed by the plurality of DWHXs. The heat reservoir can be an internal system radiator or an infinite reservoir such as a cooling pond. The method can comprise a design tool for optimizing a DWHX cooling system utilizing the internal system radiator or an infinite reservoir, among other things. | 10-17-2013 |
20130270937 | WIND TURBINE WITH IMPROVED COOLING - A wind turbine with a wind turbine tower; a nacelle; a wind turbine rotor hub having at least one blade mounted thereon; a shaft coupled to the wind turbine rotor hub, and to a generator which has a rotor with at least one superconducting rotor coil and a stator with at least one conductive stator coil. The rotor coil and the stator coil have interacting magnetic fields for inducing current in the stator coil. A stator iron and at least a part of the stator coils are thermally coupled by first and second types of cooling channels along an inner and an outer periphery of the stator iron, respectively. The cooling channels guide a coolant that conducts heat away from the stator coil. Interconnecting pipes are coupled to at least a first chamber or a second chamber of the second type of cooling channels. | 10-17-2013 |
20130270938 | Cooling Structure for Electric Vehicle - Provided is an electric motorcycle including a traveling motor, and a power supply circuit of an inverter and the like, in which a non-conducting cooling oil is supplied to be brought into direct contact with at least one of an electromagnetic coil of the traveling motor and a circuit board of the inverter. A radiator is disposed outside cases of a power plant and a power control controller so as to allow a traveling wind to pass by. Cooling oil is circulated between the radiator and a case of at least one of the power plant and power control controller. A cooling structure for an electric motor and the like that can obtain a higher cooling efficiency than a conventional art while having a simple structure which hardly causes increases in size, weight, cost, and the like can be provided. | 10-17-2013 |
20130270939 | ELECTRIC MACHINE WITH ENCLOSED, AUTONOMOUS COOLING MEDIUM CIRCUIT - An electric machine has a base body with a stator, a rotor shaft mounted in the base body, and a heat exchanger. Cooling ducts for a liquid cooling medium are arranged in the base body. The rotor shaft is embodied as a hollow shaft through which the liquid cooling medium can flow. The heat exchanger dissipates heat contained in the liquid cooling medium to the surroundings of the electric machine. The heat exchanger, the rotor shaft and the cooling ducts are fluidically connected in series, producing a closed circuit for the liquid medium. A feed element is arranged to co-rotate with the rotor shaft. The feed element is inserted in the closed circuit for the liquid cooling medium to forcibly circulate the liquid cooling medium in the closed circuit as the rotor shaft for the liquid cooling medium rotates. | 10-17-2013 |
20130278089 | LIQUID COOLED ELECTRICAL MACHINE - Flow control apparatus for an electrical machine and comprising an arrangement of shaped chambers and passages for conveying a liquid coolant. The rate of heat transfer from certain portions of the machine to the coolant is determined by the varying velocity of the liquid through the chambers, resulting in a generally uniform cooling of those portions of the machine. | 10-24-2013 |
20130278090 | Rotating Electrical Machine Unit - A rotating electrical machine unit includes a rotating electrical machine including a ring-shaped stator and a rotator provided inside of the stator, and a power inverter including a ring-shaped first casing and a power module accommodated in the first casing and integrated with the rotating electrical machine by being stacked in such a manner that a lower surface of the first casing is in contact with an upper surface of the stator. The power inverter has a first coolant path formed to have a ring shape in the first casing. The power module has a heat radiation unit arranged in the first coolant path and exchanging heat with a cooling medium flowing in the first coolant path. | 10-24-2013 |
20130285487 | STATOR OF AN ELECTRICAL MACHINE AND AN ELECTRICAL MACHINE - A stator of an electrical machine that is straightforward to assemble and for which an efficient liquid cooling can be arranged includes a stator core ( | 10-31-2013 |
20130300228 | GENERATOR, IN PARTICULAR FOR A WIND TURBINE - A generator for a wind turbine is provided. The generator has a rotor rotatably mounted relative to a stator and a support member for stationary mounting the stator. The stator has at least one groove arranged on a surface of the stator that is bounded by a surface of the support member so as to form at least one duct for conducting a coolant. | 11-14-2013 |
20130300229 | COOLING JACKET HAVING A MEANDERING COOLING SYSTEM - A cooling system for an electrical machine is produced in the form of an extruded profile and has a plurality of webs which run in the direction of the extrudate of the extruded profile. Each web separates two adjacent cooling channels of the cooling jacket from one another. The cooling channels of the cooling jacket form a meandering cooling system. Passages of the cooling system which run perpendicular to the webs are formed by in each case one cutout in each of the webs at one of the end faces of the cooling jacket or by cutouts in end plates which are attached to the end faces of the cooling jacket. | 11-14-2013 |
20130307357 | Permanent Magnet Motor with a Closed Cooling System - An electric, permanent magnet motor ( | 11-21-2013 |
20130313928 | Electric Machine Rotor Cooling Method - An electric motor coupled to a driven device of a vehicle. The electric motor includes a rotor and a shaft coupled to the rotor. The rotor has at least one radially oriented cavity and at least one fluid channel. The fluid channel extends in a generally axial direction. The fluid channel is fluidly connected to the at least one radially oriented cavity. The shaft has a fluid passageway therein. The at least one radially oriented cavity has a fluid connection to the fluid passageway of the shaft. The at least one radially oriented cavity leads to a radial exit from the rotor for a flow of fluid therefrom. | 11-28-2013 |
20130328423 | CASE OF ELECTRIC ROTATING MACHINE - A case of an electric rotating machine, includes: a cooling passage which is provided inside the case along a circumferential direction of the case and through which a cooling fluid is able to flow; a cooling fluid inlet and a cooling fluid outlet which communicate with the cooling passage; and a rib which is provided inside the cooling passage, connect a wall portion on an inside in a radial direction of the case and a wall portion on an outside in the radial direction of the cooling passage along the circumferential direction, are arranged to be separated from each other in an axial direction of the case, and partition the cooling passage into a plurality of cooling passages. | 12-12-2013 |
20130334911 | ELECTRIC MOTOR INCLUDING A POSITIVE PRESSURE INTRODUCTION SYSTEM AND METHOD - An electric machine includes a housing having an interior portion, a stationary member including a stationary field is fixedly mounted to the housing and a movable member including a rotating field is rotatably mounted relative to the stationary member. A positive pressure introduction system is fluidically coupled to the housing. The positive pressure introduction system is configured and disposed to raise an internal pressure of the interior portion of the housing. | 12-19-2013 |
20130334912 | MOTOR COOLING STRUCTURE AND MOTOR - A motor cooling structure for cooling a motor, which includes a shaft transmitting power and a rotor core attached to an outside of the shaft, by a cooling medium, includes: a cooling medium supply passage that extends to an inside of the shaft in an axial direction of the shaft and passes the cooling medium through the cooling medium supply passage; and a plurality of cooling medium passages that are branched from the cooling medium supply passage to cool the rotor core while flowing the cooling medium without branching the cooling medium in the axial direction and then eject the cooling medium from a plurality of ejection holes opened to a surface of the rotor core, wherein distances from a cooling medium inlet, through which the cooling medium flows into the cooling medium supply passage, to the respective ejection holes are equal between the plurality of cooling medium passages. | 12-19-2013 |
20130342045 | ELECTRIC MOTOR COOLING MEDIUM DISCHARGE STRUCTURE AND ELECTRIC MOTOR - It is an object to decrease an amount of a cooling medium which stays in a housing of an electric motor and is not discharged to the outside when cooling the electric motor by the cooling medium. For this reason, an electric motor includes a first discharge port which is provided in a first flange of a housing so that the cooling medium passes therethrough, a second discharge port which is provided in the first flange so that the cooling medium in the housing passing a bearing passes therethrough, and a discharge passageway which discharges the cooling medium passing the first discharge port and the second discharge port to the outside of the housing. | 12-26-2013 |
20130342046 | MOTOR - Disclosed is a motor, the motor according to an exemplary embodiment of the present disclosure including a motor unit including a stator, a rotor and a rotation shaft receiving a rotary power from the rotor, a first housing accommodating the motor unit and including a hitching rim protruded thereinto at a distal end of an upper surface, a second housing interposed between the first housing and the motor unit and including a first flange unit protruded to an upper outer surface for a space distanced from the first housing and a second flange protruded to a bottom outer surface, a first cover coupled to an upper surface of the first housing and the second housing, and a second cover coupled to a bottom surface of the first housing and the second housing. | 12-26-2013 |
20130342047 | Frame Having Integrated Cooling for an Electric Drive - In a frame having integrated cooling for an electric drive, coolant flows through a width of the frame in an inverse manner. The frame has roughly the form of a cylinder sleeve having a diameter and an axial width, whose outer surface is provided with cooling ducts. A first bundle of cooling ducts, connected in parallel, guides the coolant from a coolant intake around substantially the entire circumference of the frame. A second bundle of cooling ducts, connected in parallel, guides the coolant around substantially the entire circumference of the frame, back to a coolant outlet ( | 12-26-2013 |
20140015351 | LIQUID COOLED HIGH EFFICIENCY PERMANENT MAGNET MACHINE WITH GLYCOL COOLING - A permanent magnet motor, generator or the like that is liquid cooled using glycol or similar fluid with the cooling applied directly in the winding slots of the stator and in self contained loops such that no adverse loops are formed. | 01-16-2014 |
20140015352 | HIGH EFFICIENCY PERMANENT MAGNET MACHINE WITH CONCENTRATED WINDING AND DOUBLE COILS - A permanent magnet motor, generator or the like that is constructed such that each coil is manufactured as two individual coils. | 01-16-2014 |
20140015353 | HIGH EFFICIENCY PERMANENT MAGNET MACHINE WITH LAYER FORM WINDING - A permanent magnet motor, generator or the like that is constructed with a layer form wound winding for easy manufacturing of robust machines | 01-16-2014 |
20140042841 | Liquid Cooled Electric Motor - A liquid-cooled, radial air gap electric motor includes a stator, a rotor, a rotor shaft, two end bells, a housing, a coolant manifold system, and a coolant sump. The rotor includes a plurality of axially directed slots located near its periphery. The coolant manifold system directs a first portion of liquid coolant to flow past some portion of the stator and a second portion of liquid coolant to flow through the rotor slots. Some or all of the liquid coolant is received by the coolant sump from which the coolant may be recirculated. | 02-13-2014 |
20140054987 | ROTATING ELECTRICAL MACHINE - A rotating electrical machine includes: a rotor equipped with a first coolant flow channel therein; an end plate arranged at an end of the rotor in an axial direction of the rotating electrical machine, the end plate being equipped with a second coolant flow channel that communicates with the first coolant flow channel and a coolant discharge hole, the coolant discharge hole being provided on a radially inner side with respect to a position of communication with the first coolant flow channel, the coolant discharge hole being configured to discharge a certain amount or more of coolant to an outside of the rotor; and a rotor shaft equipped with a third coolant flow channel that communicates with the second coolant flow channel. | 02-27-2014 |
20140054988 | HYBRID MOTOR VEHICLE DEVICE - In a hybrid motor vehicle device, comprising an internal combustion engine, a transmission unit connected to the internal combustion engine and including at least one electric motor which is provided for connection to the transmission unit, a starting element connected to the engine, an operating medium pressure system is provided for cooling the electric motor and the starting element, with a cooling duct, which, in at least one operating state, places the starting element and the electric motor in fluid communication with one another, the operating medium pressure system having at least one adjustment unit for varying a flow cross section of the cooling duct for controlling the coolant flow to the electric motor in the at least one operating state. | 02-27-2014 |
20140062229 | DRIVE DEVICE, ESPECIALLY FOR A VEHICLE - A drive device having an electric drive. A drive device ( | 03-06-2014 |
20140070636 | ELECTRO-DYNAMIC MACHINE - An electro-dynamic machine is provided and includes stator assembly end turns and a coolant chargeable bladder disposable to contact the end turns. | 03-13-2014 |
20140070637 | THERMAL MANAGEMENT OF AN IPM MOTOR WITH CONTAINERIZED FLUID - A rotor of an electric machine includes a rotor core having a plurality of longitudinally extending magnet channels each containing a permanent magnet, and a plurality of moldable containers each containing a heat transfer material and each being contiguous with portions of the respective permanent magnet and its magnet channel. A method of thermal management of an internal permanent magnet (IPM) rotor includes installing, into at least one longitudinally extending magnet channel of a rotor core, a permanent magnet having opposite lateral ends. The method also includes installing a moldable container, enclosing a heat transfer material, into the magnet channel adjacent one of the lateral ends of the permanent magnet. The method further includes transferring heat from the magnet through the container into the rotor core. | 03-13-2014 |
20140070638 | COIL ASSEMBLY FOR THREE PHASED TRANSVERSE AXIAL FLUX MULTI DISK MACHINES - This patent describes a coil assembly for a three phased permanent magnet (PM) iron free axial flux multi disc electric machine. The coil assembly is assembled from coil elements ( | 03-13-2014 |
20140070639 | ROTARY ELECTRIC MACHINE - A rotary electric machine includes a rotor, a stator disposed facing the rotor in a radial direction having a stator core with a plurality of slots aligned in a circumferential direction and a stator winding wound around the slots of the stator core, and a cooling mechanism for cooling first and second coil-end groups of the stator winding by dropping a liquid coolant from an outer peripheral side thereof. The stator is disposed along an inner circumferential surface of at least one of the first and the second coil-end groups of the stator winding, and there is provided a shielding member for preventing the liquid coolant from falling into the inner circumferential side of the first and the second coil-end groups. Thus, it is possible to cool throughout the first and the second coil-end groups efficiently and reliably by the liquid coolant, a sufficient cooling effect can be obtained. | 03-13-2014 |
20140077631 | COOLING SYSTEM FOR MOTOR - In a vertical through hole of a rotational shaft, a first protrusion portion and a second protrusion portion protruding from an inner peripheral surface of the vertical through hole are provided in an axial direction of the though hole to form a storage area for storing oil, and discharge holes for directly discharging oil flowing over the first protrusion portion into the transaxle casing are provided in parallel with the cooling holes. | 03-20-2014 |
20140077632 | ELECTRIC MACHINE WITH THERMAL TRANSFER BY LIQUID - A rotor of an internal permanent magnet (IPM) electric machine includes a core having first and second axial ends, longitudinal channels extending between the ends, and a plurality of permanent magnets disposed in the channels. A first conical spring washer having a circumferential edge is secured to the first axial end and a second conical spring washer having a circumferential edge is secured to the second axial end. Space between the first conical spring washer and the first axial end is in fluid communication, via the channels, with space between the second conical spring washer and the second axial end. A method includes stacking and aligning laminations on a shaft to thereby form a rotor core, placing a conical spring washer onto the shaft at each axial end of the lamination stack, and tightening the conical spring washers onto the shaft, whereby the conical spring washers compress the lamination stack. A method of cooling magnets of an internal permanent magnet (IPM) electric machine includes enclosing each axial end of a rotor core with a conical spring washer to form two respective end cavities, and transferring coolant between the end cavities, thereby passing the coolant by the magnets. | 03-20-2014 |
20140077633 | VEHICLE - A vehicle includes a motor, a driving device, and a cooling device. The motor includes a motor main body and a winding switching unit. The motor main body includes windings and a first coolant channel to cool said windings. The winding switching unit is disposed on an outer surface of said motor main body and includes heat-generating components and a second coolant channel. The heat-generating components are used to switch said windings. The second coolant channel is to cool said heat-generating components. The driving device is configured to control switching of said winding switching unit and configured to apply driving voltage to said windings, the drive device including a third coolant channel. The cooling device is to cool coolant that flows through said first coolant channel, said second coolant channel and said third coolant channel. | 03-20-2014 |
20140077634 | COOLING JACKET AND DEFLECTION UNIT FOR COOLING JACKETS - A cooling jacket ( | 03-20-2014 |
20140084719 | POWER CONTROL UNIT - A power control unit that controls a rotary electric machine that drives a vehicle, and that is mounted onto a motor case in which the rotary electric machine is housed, includes a fixed base that is made of resin; a cooler that is arranged on the fixed base and that includes a power module; and a control substrate that is arranged on the cooler. The fixed base inhibits conduction of heat from the motor case to the power control unit. | 03-27-2014 |
20140091650 | POLE SHOE - The invention relates to a pole shoe of an electrical machine, in particular a rotor of an electrical generator of a wind turbine generator system, comprising a pole shoe body for conducting a magnetic field and for receiving a winding for conducting an electrical current, in particular an excitation current, for producing the magnetic field, and at least one heat sink, entirely or partially surrounding the pole shoe body, for cooling the pole shoe, wherein the heat sink is arranged between the pole shoe body and the winding. | 04-03-2014 |
20140091651 | ELECTRICAL MACHINE WITH COOLING - A stator for an electric machine having electrical windings surrounded by a casting compound, and fluid channels for cooling the electrical windings formed in the casting compound in close spatial proximity to the electrical windings. | 04-03-2014 |
20140097713 | ELECTRIC MOTOR WITH COOLANT SHIELD ASSEMBLY - An electric motor assembly includes a shield that extends about a sector of the winding head to be disposed axially outboard of the outer axial end of the winding head and radially inboard of the inner diameter portion of the winding head. The shield defines a reservoir in which the sector of the winding head is received. The reservoir is operable to receive the coolant for cooling the winding head. Additionally, the motor assembly includes at least one sealing member that substantially seals at least one of the slots formed in an inner diameter portion of the stator core. The sealing member is operable to contain the coolant within the corresponding longitudinal opening and the reservoir. | 04-10-2014 |
20140117794 | COOLING ASSEMBLY FOR ELECTRICAL MACHINES AND METHODS OF ASSEMBLING THE SAME - An assembly for cooling an electrical coil winding having a first coil, a second coil, a first end turn and a second end turn is provided. The assembly includes a supply header; a return header; and a plurality of flow members coupled in flow communication to the supply header and the return header. The flow members are configured to channel a flow agent from supply header to the return header. Each the flow member of the plurality of flow members includes a first portion coupled to the first coil; a second portion coupled to the second coil; a first end portion coupled to the first end turn and coupled in flow communication to the first portion and the second portion; and a second end portion coupled to the second end turn and coupled in flow communication to the second portion. | 05-01-2014 |
20140117795 | MOTOR COOLING FEATURES - A cooling system of an electric machine includes a rotor having a shaft, a hub mounted to the shaft, and a core mounted to the hub. A bearing assembly is secured to the shaft and has a rotating portion and a fixed portion including a fluid inlet. A plurality of nozzle features are fluidly connected to the fluid inlet via a manifold. A cooling system of an electric machine includes a rotor having a shaft and a hub mounted to the shaft, a fluid inlet having a rotating portion and having a fixed portion, a fluid manifold, and a plurality of nozzle features disposed in the hub and fluidly connected to the fluid inlet via the manifold. A method of cooling an electric machine includes spraying coolant from a plurality of hub nozzles onto end turns of a stator winding. | 05-01-2014 |
20140117796 | ELECTRIC MOTOR WITH COOLING OF HOUSING - An electric motor having a housing having a front and a rear end plate, a rotor that is mounted in the end plates, a stator, the core of which stator includes stator plates that are aligned with respect to each other in the axial direction of the rotor, and a housing cooling system that includes a tube that surrounds the stator core, the being concentrically surrounded by at least one cooling channel that is open towards the tube. | 05-01-2014 |
20140117797 | DYNAMOELECTRIC MACHINE COMPRISING A SELF-SUPPORTING HOUSING - A dynamo-electric machine includes a self-supporting housing that has a laminated core section and at least one connecting section in the axial extension of the laminated core section. The laminated core section accommodates and secures, and at least sectionally surrounds all sides of, a laminated core of a stator. The individual sheets of the laminated core have a basic outer shape with an especially octagonal cross-section, a stator bore surrounded by radially arranged grooves which are evenly distributed along the circumference of the stator bore, a yoke back that radially adjoins the grooves and extends equidistantly from the stator bore, and axial cavities in the sheet, in regions between the yoke, back and the basic outer shape of the sheets. | 05-01-2014 |
20140125162 | COOLING STRUCTURE FOR ROTATING ELECTRIC MACHINE - A cooling structure for a rotating electric machine includes a stator, a plurality of refrigerant supply ports, and a refrigerant supply passage. The stator includes a stator core, an insulating member, and a plurality of coils. Each of the plurality of coils includes a corner portion having an arc shape when viewed in a radial direction. The plurality of refrigerant supply ports are arranged at a distance from the plurality of coils in a rotational axis direction. Each of the plurality of refrigerant supply ports is arranged at a position opposite to the corner portion located at a vertically upper side, on both sides of an imaginary vertical plane. | 05-08-2014 |
20140125163 | MOTOR - A motor may include first housing installed with a stator and a rotor, and a second housing configured to form a refrigerant passage by being distanced from the first housing. When the second housing is coupled to the first housing, a first pipe is configured to introduce refrigerant into the refrigerant passage by communicating with the refrigerant passage, and a second pipe is configured to discharge the introduced refrigerant. A plurality of passage lugs are configured to be positioned at the refrigerant passage to flow the refrigerant in a zigzag manner. | 05-08-2014 |
20140125164 | COOLER AND MOTOR-INTEGRATED POWER CONVERSION APPARATUS - A surface of a plate ( | 05-08-2014 |
20140125165 | COOLING STRUCTURE OF ROTARY ELECTRIC MACHINE - A cooling structure of a rotary electric machine ( | 05-08-2014 |
20140139056 | COOLING FIXTURE AND MOTOR DEVICE USING SAME - A motor device includes a main body and a cooling fixture carrying the main body. The cooling fixture includes a contacting surface projecting relative to the main body. The contacting surface is configured for contacting a mold. The cooling fixture defines a cooling water channel. | 05-22-2014 |
20140139057 | STATOR MODULE AND MAGNETIC FIELD GENERATED STRUCTURE THEREOF - The disclosure provides a stator module and a magnetic field generated structure which includes a magnetizer and an electrically conducting pipe. The electrically conducting pipe is wound around the magnetizer and has a passage inside. The passage has an outlet and an inlet opposite to each other. The electrically conducting pipe has a current input portion and a current output portion. | 05-22-2014 |
20140145527 | ROTARY ELECTRIC MACHINE APPARATUS - A rotary electric machine apparatus includes a first rotary electric machine that includes a first rotor, a first stator and a first housing for containing the first rotor and the first stator, a second rotary electric machine that includes a second rotor, a second stator and a second housing for containing the second rotor and the second stator, a pump that supplies a cooling liquid to the first rotary electric machine and the second rotary electric machine, and a communication pipe that communicates a gas-phase in the first housing and a gas-phase in the second housing so that an internal pressures of the first housing and the second housing are balanced to each other. | 05-29-2014 |
20140167536 | COOLING-MEMBER-INTEGRATED MOTOR - A cooling-member-integrated motor includes a housing and a stator including a stator core and a stator coil wound around the stator core. A cooling member surrounds an outer circumferential surface of the stator, and a molding member is disposed in the housing. The stator and the cooling member are integrally embedded in the molding member. | 06-19-2014 |
20140175916 | ROTOR ASSEMBLY HAVING LIQUID COOLING - A liquid-cooled rotor assembly for a rotary electric machine, including a shaft provided with a fluid passageway receivable of a liquid coolant, and a substantially cylindrical rotor core rotatable in unison with the shaft. The rotor core is provided with a plurality of passages each terminating at a void in a rotor core axial end. Permanent magnets are disposed in rotor core passages, a gap is defined between each magnet and its respective rotor core passage. The shaft fluid passageway is in fluid communication with the rotor core end voids through the gaps, whereby the rotor core and the magnets are convectively cooled by liquid coolant receivable by the shaft fluid passageway and delivered to a rotor core end through the rotor core passages. Also, a method for liquid cooling a rotor assembly. | 06-26-2014 |
20140175917 | ROTOR ASSEMBLY HAVING A COOLANT AGITATION SYSTEM AND METHOD - A rotor assembly for an electric machine. The rotor assembly includes a shaft that defines a longitudinal axis of the electric machine, and a rotor body including a rotor hub supported by the shaft. The rotor body includes a first axial end and an opposing, second axial end. A coolant agitation system is provided on the rotor body. The coolant agitation system includes one or more coolant agitator members extending from one of the first and second axial ends. Each of the one or more coolant agitator members includes a first section that extends along the longitudinal axis and a second section that extends relative to the first section at a non-zero angle relative to the longitudinal axis. | 06-26-2014 |
20140175918 | ELECTRIC MOTOR - An electric motor includes a rotor and a stator. The stator surrounds the rotor, has a top half, a bottom half, and wire windings, and is fixed with respect to the drive-unit housing. The stator is cooled by gravity feed via a fluid supplied by an external source and flowing onto and past the top half. The motor also includes a fluid dam fixed relative to the stator. The fluid dam is configured to guide the fluid around the stator and shield the rotor from the fluid flowing past the stator thereby limiting an amount of the fluid between the rotor and the stator such that spin losses in the electric motor are controlled. An electro-mechanical drive-unit employing the above described electric motor is also disclosed. | 06-26-2014 |
20140175919 | ROTATING ELECTRICAL MACHINE AND HOUSING FOR ROTATING ELECTRICAL MACHINE - A housing of a rotating electrical machine includes: a plurality of heat exchangers attached to an outer surface of the housing to cool a gas circulating in the housing; and a first partition wall portion disposed in an interior of the housing to partition the interior of the housing. | 06-26-2014 |
20140175920 | ROTATING ELECTRICAL MACHINE FOR VEHICLES WITH LIQUID COOLING - An embodiment of a rotating electrical machine has: a shaft rotatably mounted to rotate around a central rotation axis; a rotor carried by the shaft; a stator which supports stator windings and is arranged around the rotor to enclose the rotor therein; a cylindrical casing which encloses the stator therein; and a cooling circuit which is intended for the circulation of a cooling fluid, is obtained at the casing, has a single common inlet opening for the cooling fluid axially arranged in the centre of a lateral wall of the casing, and two helicoidal paths, each of which is a mirror-image twin of the other one, centrally originates from the common inlet opening and extends from the centre of the casing towards a corresponding end of the casing. | 06-26-2014 |
20140183988 | Assemblies For Cooling Electric Machines - Cooling assemblies (e.g., tubes, members (e.g., i-beams, rectangular members, and the like), stator windings, stator laminations, and/or combinations thereof), such as those configured to cool electric machines (e.g., electric motors and generators). | 07-03-2014 |
20140183989 | LAMINATED CORE ASSEMBLY - The invention relates to a laminated core assembly of an electric generator, in particular of a generator of a gearless wind turbine. The laminated core assembly comprises at least one laminated core, at least one winding arranged around the laminated core, and an electrical insulating means arranged between the laminated core and the winding, wherein the insulating means has a composite material for conducting the heat arising in the winding. | 07-03-2014 |
20140203673 | LIQUID COOLED ELECTRICAL MACHINE - Flow control apparatus for an electrical machine and comprising an arrangement of shaped chambers and passages for conveying a liquid coolant. The rate of heat transfer from certain portions of the machine to the coolant is determined by the varying velocity of the liquid through the chambers, resulting in a generally uniform cooling of those portions of the machine. | 07-24-2014 |
20140203674 | ROTOR AND A MOTOR AND COMPRESSOR COMPRISING THE ROTOR - The invention relates to a rotor and a motor and compressor comprising the rotor. The rotor comprising a rotor core defining an outer periphery, a bore concentric with a center of the rotor core, a plurality of magnet slots positioned on the outer periphery, and a plurality of oil holes located radially outward from the center between the bore and the magnet slots, each oil hole includes a body portion and at least one projected portion, the projected portion located radially outward from the body portion and positioned between the body portion and the magnet slots. The projected portion may increase the contact area of the compressor oil with the rotor core to effectively cool down the rotor core. Another advantage of the projected portion may be to further cool down the magnet in the magnet slots. Cooling the magnets may protect against their demagnetization. | 07-24-2014 |
20140217841 | HIGH EFFICIENCY, LOW COOLANT FLOW ELECTRIC MOTOR COOLANT SYSTEM - A fluid-cooled electric motor includes a generally tubular-shaped motor housing having a plurality of channels through which a coolant can flow. The channels are spaced apart from each other in an annular arrangement around the housing and extend through the housing in an axial direction. Each of the channels is surrounded by a portion of the housing defining walls of the channel forming a cooling surface area. | 08-07-2014 |
20140217842 | GENERATOR MOTOR AND ELECTRIC VEHICLE USING SAME - To uniformly cool down armature windings along the circumferential direction of a stator in a generator motor. A generator motor includes a stator | 08-07-2014 |
20140232219 | COOLING ARRANGEMENT FOR A MOTOR ASSEMBLY AND METHOD OF COOLING A MOTOR ASSEMBLY - A cooling arrangement for a motor assembly includes a motor operably connected to a load. Also included is a motor controller disposed adjacent to, and fluidly coupled to, the motor, the motor controller disposed within a housing enclosing a cooling fluid for immersion of a plurality of motor controller components. Further included is a duct arrangement configured to route a cooling flow to a location proximate the housing of the motor controller for cooling therealong. | 08-21-2014 |
20140239754 | ROTARY ELECTRIC MACHINE - In a rotary electric machine, a cylindrical stator core holding frame is cantilevered on a housing. A cylindrical stator core is fitted together and held inside the stator core holding frame. The stator core holding frame includes: a flange portion that is fixed to the housing; and a frame cylindrical portion that is coupled to the flange portion, and that holds the stator core. A thickness of the flange portion is greater than a thickness of the frame cylindrical portion. | 08-28-2014 |
20140239755 | ROTATING ELECTRICAL MACHINE - This disclosure discloses a rotating electrical machine including a rotating electrical machine main body portion including a stator and a rotor, a winding switching unit including a plurality of electronic components and configured to switch windings of the stator, and a wiring chamber including a first terminal base configured to connect an end portion of the windings to the electronic components electrically. The wiring chamber is arranged between the rotating electrical machine main body portion and the winding switching unit. | 08-28-2014 |
20140246931 | LIQUID-COOLED ROTARY ELECTRIC MACHINE HAVING FLUID CHANNEL WITH AUXILIARY COOLANT GROOVE - A liquid-cooled rotary electric machine including a heat transfer surface traversed by a fluid channel defining a flow path for liquid coolant through the machine. A first fluid channel portion extends about and progresses in a direction parallel to the central axis, and is interconnected with a second fluid channel portion at spaced locations along the first fluid channel portion. The heat transfer surface includes a zone which the first fluid channel portion does not traverse, and is located between a jacket axial end and the first fluid channel portion. The second fluid channel portion extends into the zone between the interconnections, whereby the zone is traversed by the second fluid channel portion and heat is convectively transferable from the zone to liquid coolant along the flow path. Also, a method for liquid-cooling a rotary electric machine. | 09-04-2014 |
20140246932 | LIQUID-COOLED ROTARY ELECTRIC MACHINE HAVING AXIAL END COOLING - A liquid-cooled rotary electric machine including jacket defining a heat transfer surface in conductive thermal communication with a stator and having an axial end portion partially enclosing an interior volume. A heat source is in conductive thermal communication with a wall of the jacket axial end portion. A fluid channel traverses the heat transfer surface between opposite axial ends of the jacket, and a fluid passage in fluid communication with the fluid channel is defined by jacket axial end portion walls. A flow path of liquid coolant through the machine is defined by the fluid channel and the fluid passage between a machine coolant inlet and outlet, whereby at least a portion of heat transferable between the heat source and the fluid passage is convectively transferable between the jacket axial end portion walls and liquid coolant along the flow path. Also a method for liquid-cooling a rotary electric machine. | 09-04-2014 |
20140246933 | LIQUID-COOLED ROTARY ELECTRIC MACHINE HAVING HEAT SOURCE-SURROUNDING FLUID PASSAGE - A liquid-cooled rotary electric machine including jacket defining a heat transfer surface in conductive thermal communication with a stator and having an axial end portion partially enclosing an interior volume. A heat source is in conductive thermal communication with a wall of the jacket axial end portion. A fluid channel traverses the heat transfer surface between opposite axial ends of the jacket. A fluid passage in fluid communication with the fluid channel is defined by jacket axial end portion walls and substantially surrounds the heat source in an imaginary plane perpendicular to the stator axis. At least a portion of heat transferable between the heat source and the fluid passage is convectively transferable between jacket axial end portion walls and liquid coolant along a flow path of liquid coolant through the machine. Also a method for liquid-cooling a rotary electric machine. | 09-04-2014 |
20140252893 | ELECTRICAL MACHINE - An electrical machine includes a coolable stator having an annular laminated stator core formed of a number of stator laminations having stator teeth which point radially inwards and form stator slots therebetween for accommodating a field winding wound onto the stator teeth. The laminated stator core has peripheral passage openings aligned with one another and forming cooling ducts. | 09-11-2014 |
20140265657 | ELECTRIC MACHINE WITH LIQUID COOLING AND METHOD OF ASSEMBLING - In one aspect, a stator for use in a liquid cooled electric machine having a rotor is provided. The stator includes a stator body having a radially outer periphery and a radially inner periphery, and at least one first coolant passage extending radially through the stator body from the outer periphery to the inner periphery. The at least one first coolant passage facilitates providing a coolant to an air gap defined between the stator body and the rotor | 09-18-2014 |
20140265658 | DRIVE MODULE WITH SPRAY COOLING OF ELECTRIC MOTOR - A drive module with a housing, an electric motor, a coolant sump, an inlet pipe and a transmission and differential assembly that is driven by the electric motor to drive a pair of output members. The electric motor is coupled to the housing and has a stator, which is fixedly coupled to the housing, and a rotor that is rotatable within the stator. The rotor has a coolant passage, which extends parallel to a rotational axis of the rotor, and a nozzle passage that intersects the coolant passage and extends radially outwardly therefrom. The coolant sump is configured to hold a coolant fluid. The inlet pipe is in fluid communication with the coolant sump and is received into the coolant passage. The inlet pipe is configured to feed the coolant fluid from the coolant sump into the coolant passage. The coolant fluid is gravity fed into the inlet pipe. | 09-18-2014 |
20140265659 | L-SHAPED SHEET METAL COOLING JACKET WITH STAMPED BEARING SUPPORT - An embodiment of an electric machine includes inner and outer housing sections attached to one another to form, at an axial end of the electric machine, a cooling channel therebetween. Such electric machine also includes a bearing carrier coupled to the housing sections and radially registered to the inside diameter of the inner housing section. An embodiment of an electric machine includes annular, L-shaped inner and outer sheet metal housing sections enclosing a cooling channel at an axial end of the electric machine and otherwise being substantially parallel and contiguous, and includes a first bearing assembly coupled to the inner housing section. | 09-18-2014 |
20140265660 | Assemblies and Methods for Cooling Electric Machines - Cooling assemblies, such as those configured to cool electric machines (e.g., electric motors and generators) and components of electric machines (e.g., rotors and stators). | 09-18-2014 |
20140292117 | AXIAL FLUX PERMANENT MAGNENT - According to an aspect of the present invention, an axial flux permanent magnet motor includes: a stator assembly configured to produce magnetic flux in a rotating axis direction; and a housing assembly including a motor housing in which the stator assembly is accommodated, in which a first cooling groove is formed in an inner circumferential surface of the motor housing to be predeterminedly and circumferentially extended, a second cooling groove, which corresponds to the first cooling groove, is formed in an outer circumferential surface of the stator assembly so as to be predeterminedly and circumferentially extended, and the first and second cooling grooves meet together to form a cooling flow path for a flow of a coolant. | 10-02-2014 |
20140292118 | STATOR, ROTARY ELECTRIC MACHINE PROVIDED WITH THE STATOR AND METHOD OF MANUFACTURING THE STATOR - In a stator, a stator winding is wound at a stator core. The stator winding has a section whose shape is rectangular and includes a plurality of conductors electrically connected to each other. Each of the conductors has in-slot portions being accommodated as being stacked in corresponding one of the slots when the winding is wound at the stator core. A fixing member fixes the in-slot portions to each of the slots. The fixing member is composed of an adhesive material charged into each of the slots such that a through-hole is left through each of the slots in the axial direction. Refrigerant is allowed to pass through the through-hole. | 10-02-2014 |
20140292119 | ROTARY ELECTRIC MACHINE WITH SEGMENT TYPE OF STATOR WINDING - In a rotary electric machine provided with a rotor and a stator, a wedge is inserted between in-slot portions stacked in each of slots of the stator and a wall of each of the slots. The wedge has two edges and a length ranging from one of the edges to the other. The length of the wedge is smaller than an axial length of the stator core. The wall is located oppositely to an opening of each slot. By inserting the wedge, both end portions of the conductors are tilted so as to be oriented oppositely to the rotor in the radial direction. The tilted end portions starts from each of the two edges of the wedge in the axial direction. | 10-02-2014 |
20140292120 | ELECTROMECHANICAL FLYWHEEL COOLING SYSTEM - An electromechanical flywheel machine includes a flywheel mass and a motor-generator having a rotor rotatable about a stator wherein the stator is supported by a fluid cooled stator support. The electromechanical flywheel has the rotor encircling a stationery stator and stator windings including a field winding encircling an axis of stator rotation and an armature winding that does not encircle the axis of stator rotation. | 10-02-2014 |
20140292121 | VEHICLE DRIVE ASSEMBLY COMPRISING COOLING BY MEANS OF A HEAT-TRANSFER FLUID AND AIR - An electric vehicle drive assembly includes an electric motor mounted to engage with a wheel of a vehicle. The electric motor includes a rotor and a magnetic assembly. The rotor is rotatably mounted in a stator through interposition of an internal rolling bearing, which is positioned near the wheel, and an external rolling bearing, which is positioned at some distance from the wheel. The magnetic assembly is designed to rotationally drive the rotor. The rotor is provided with a heat pipe having at least one condensation zone, for condensing a heat-transfer liquid, and at least one evaporation zone, for evaporating the heat-transfer liquid. The evaporation zone is arranged to extend axially inside the internal rolling bearing. | 10-02-2014 |
20140300220 | LIQUID COOLED STATOR FOR HIGH EFFICIENCY MACHINE - A stator for a motor, generator or the like that is liquid cooled using glycol or similar fluid with the cooling applied directly in the winding slots of the stator in either concentrated wound or distributed wound configurations. | 10-09-2014 |
20140300221 | ELECTRIC MOTOR - An electric motor includes a motor housing ( | 10-09-2014 |
20140300222 | ROTATING ELECTRICAL MACHINE - A rotating electrical machine includes an annular stator, a plurality of coils, a case, a side cover, a refrigerant passage, supply ports, and a strainer. The annular stator has an axis. The plurality of coils are provided about the axis. The case houses the stator. The side cover is disposed at one axial end of the case so as to face the stator in an axial direction along the axis. The refrigerant passage is provided in the side cover along a circumferential direction. The supply ports supply refrigerant from the refrigerant passage toward axial ends of the plurality of coils. The strainer is provided inside the refrigerant passage to be erected so as to intersect with the axis. The strainer has a plate-shaped member including holes to trap foreign matter in the refrigerant while the refrigerant passes through the holes. | 10-09-2014 |
20140300223 | ROTOR FOR ROTATING ELECTRICAL MACHINE, AND ROTATING ELECTRICAL MACHINE PROVIDED WITH SAID ROTOR - Provided is a rotating electrical machine wherein it is possible to sufficiently cool an electronic device attached to a rotor by means of a liquid refrigerant. A rotor for a rotating electrical machine is provided with a shaft supported in a rotatable manner, a rotor core secured to the shaft, an electronic device disposed so as to rotate along with the shaft and the rotor core, a coil wound around the rotor core and connected to the electronic device, and a cooling structure for sequentially cooling the electronic device and the coil by means of a liquid refrigerant supplied from the shaft. | 10-09-2014 |
20140306557 | VEHICLE DRIVE ASSEMBLY COMPRISING COOLING BY MEANS OF A HEAT-TRANSFER FLUID AND A LUBRICATING FLUID - An electric vehicle drive assembly includes an electric motor mounted to engage with a wheel of a vehicle. The electric motor includes a rotor and a magnetic assembly. The rotor is rotatably mounted in a stator through interposition of rolling bearings. The magnetic assembly is designed to rotationally drive the rotor. The rotor is provided with a heat pipe having at least one condensation zone, which is arranged to condense a heat-transfer liquid, and at least one evaporation zone, which is arranged to evaporate the heat-transfer liquid. The wheel includes a driven shaft, which is structured to collaborate with the rotor. The heat pipe extends axially from the rotor into the driven shaft. | 10-16-2014 |
20140333161 | ELECTRIC MACHINE HAVING A COOLED ROTOR SHAFT - An electric machine ( | 11-13-2014 |
20140333162 | ELECTRIC DRIVE DEVICE FOR MOTOR VEHICLE - The present invention relates to an electric drive device for driving of a motor vehicle comprising an electric motor arranged to be media supplied, the electric motor having a jacket surface and an essentially ring shaped cross section, wherein said media supply is arranged to be effected via a connection unit arranged in connection to the jacket surface of the electric motor. The invention also relates to a motor vehicle with an electric drive device. | 11-13-2014 |
20140339934 | ELECTRIC MOTOR - An electric motor includes a housing, a rotor, a stator, a storage tank, and a communication passage. The stator has a stator core provided coaxially with the rotor to surround the rotor. The storage tank is provided at a lower portion of the housing to store lubricating oil and divided by the stator core into a first storage tank and a second storage tank. The communication passage is provided to communicate the first storage tank with the second storage tank. The communication passage, as seen in an axial direction, extends above an oil level of the lubricating oil stored in the first storage tank and the second storage tank such that an air flows between an upper portion of the first storage tank and an upper portion of the second storage tank. | 11-20-2014 |
20140346905 | ROTATING ELECTRIC MACHINE - A rotating electric machine includes a rotor, a stator, a cooling device and a pair of cooling liquid collection tanks. The stator includes an annular stator core and a stator coil. The stator core is disposed radially outside the rotor so as to surround the rotor. The stator coil is mounted on the stator core so that a pair of coil ends of the stator coil protrude axially outward respectively from opposite axial end faces of the stator core. The cooling device is configured to supply cooling liquid to vertically upper parts of the coil ends of the stator coil. Each of the cooling liquid collection tanks is arranged to surround a vertically lower part of a corresponding one of the coil ends so as to collect and temporarily reserve therein the cooling liquid moved from the upper part to the lower part of the corresponding coil end. | 11-27-2014 |
20140354089 | ELECTRIC MACHINE WITH LIQUID COOLED HOUSING - An electric machine having a stator, a rotor and a housing assembly with two end caps and inner and outer axially extending members. The outer housing member is disposed about the inner member. Ribs extend from one housing member and engage the other housing member in an interstitial space. The other housing member may be a tubular sleeve. The ribs define axially extending fluid path segments within the interstitial space and the end caps close the opposite axial ends of the interstitial space and define an inlet and an outlet for a liquid coolant. The liquid coolant path may be serpentine. The housing member with ribs may include a sleeve portion with at least some ribs having a width greater than the radial thickness of the sleeve portion. Threaded fasteners can attach the end caps to the enlarged width ribs. The inner and outer housings are advantageously extrudable. | 12-04-2014 |
20140354090 | ELECTRIC MACHINE WITH LIQUID COOLED HOUSING AND END CAP - An electric machine that includes a stator operably coupled with a rotor. At least one axially extending housing member is thermally coupled with the stator core and defines a plurality of axially extending fluid passages. An end cap defines a plurality of end turn fluid passages interconnecting the axially extending fluid passages. The end turn fluid passages are arranged circumferentially about and proximate a first axial end of the stator whereby the axially extending fluid passages and end turn passages define a serpentine path. An electronic component thermally coupled with the end cap is disposed radially inward and axially proximate the plurality of end turn fluid passages. The electronic component may be at least partially axially positioned between the distal limit of the stator windings and the axial limit of the serpentine path. In alternative embodiments, the end cap supports a bearing assembly for the rotor shaft. | 12-04-2014 |
20140354091 | ROTOR FOR ROTARY ELECTRIC MACHINE, AND ROTARY ELECTRIC MACHINE PROVIDED WITH THE ROTOR - In a rotor for a rotary electric machine including an electronic device, such as a diode, around which a coil is wound and which is connected to the coil via a lead wire, poor connection between the coil and the electronic device caused by a centrifugal force is prevented. A rotary electric machine includes: a shaft that is rotatably supported; a rotor core that is fixed to the shaft and around which the coil is wound; and the electronic device that is provided non-parallel to the shaft so as to rotate together with the rotor core, that has a main body having a rectifying function and a terminal section electrically connected to the main body, and in which the lead wire extending from the coil is connected to the terminal section. A connection section between the lead wire and the terminal section of the electronic device is provided on an inner diameter side of the main body of the electronic device in a radial direction of the rotor core. | 12-04-2014 |
20140361649 | COOLING ARRANGEMENT FOR AN ELECTRICAL MACHINE - This invention relates to a laminated core for an electrical machine, including: a plurality of laminations configured to define a channel in a surface of the laminated core for the flow of a cooling fluid, wherein the channel has a base and at least one side wall, the at least one side wall having a stepped profile. | 12-11-2014 |
20140368064 | Rotor Assembly with Heat Pipe Cooling System - An electric motor cooling system is provided in which at least one heat pipe is captured within at least one hollow region within the motor's rotor shaft. An end of the heat pipe that extends out and away from the end of the rotor shaft is coupled to a heat exchanger, for example a heat sink in which the fins of the heat sink are shaped as fan blades. During motor operation, as the rotor heats up thermal energy is absorbed by the heat pipe within the rotor shaft and transferred to the heat sink for efficient removal. | 12-18-2014 |
20140375153 | ROTATING ELECTRIC MACHINE FOR VEHICLES - A rotating electric machine for vehicles has a rotor, a stator, and an electric power converter. The electric power converter has a plurality of MOS modules including a MOS transistor on a high side and another MOS transistor on a low side. Each of the MOS modules has a length and a plurality of terminals are pulled out from both ends of the switching module, the plurality of terminals are disposed in positions where currents that flow through insides of the modules are faced to each other in opposite flowing direction, and bus bars are disposed at upper surface side of each module. | 12-25-2014 |
20140375154 | ROTATING ELECTRIC MACHINE - A rotating electric machine includes a rotor and a stator. The stator includes a stator core and a three-phase stator coil comprised of a plurality of star-connected phase windings. The phase windings are partially received in slots of the stator core to form a pair of coil ends which respectively protrude from opposite axial end faces of the stator core. Each of the phase windings is comprised of a plurality of winding segments. The stator coil also has a plurality of intraphase bridging wires electrically connecting the winding segments of the same phase and a plurality of interphase bridging wires electrically connecting neutral point-side ends of the phase windings. All of the intraphase and interphase bridging wires are arranged on one of the coil ends so that at least one of the intraphase bridging wires is in direct contact with at least one of the interphase bridging wires. | 12-25-2014 |
20150008770 | ROTATING ELECTRIC MACHINE - A rotating electric machine includes a stator, a rotor, and a coolant supply passage. Coils are wound on the teeth of the stator. The rotor is disposed coaxially with the stator, and has an outer circumferential surface that faces respective distal end faces of the teeth with a constant gap formed therebetween. The coolant supply passage is disposed inside the rotor, and is configured to eject a coolant from a coolant outlet of the outer circumferential surface of the rotor toward the distal end face of a corresponding one of the teeth so as to supply the coolant to the gap. A discharge groove is formed in the distal end face of the corresponding tooth. The discharge groove is inclined radially outwardly of the stator, from a coolant supply position as an axial position of the stator facing the coolant outlet, toward one edge of the distal end face of the corresponding tooth. | 01-08-2015 |
20150015095 | ROTARY ELECTRIC MACHINE - A rotary electric machine includes a coil portion of the stator coil that protrudes from an end of a stator core, a terminal module that is provided on a top of the coil portion on an axial end of the coil portion and that electrically connects the stator coil and an external electric device, and a cover unit in which a cover that covers the terminal module and a guide that guides a coolant to the coil portion are formed together into one piece. The guide is provided on each of circumferentially opposite sides of the cover to supply a coolant to the coil portion in a distributed manner. | 01-15-2015 |
20150015096 | Electrical Machine - An electrical machine, particularly for driving a vehicle, comprises a rotor having a rotor shaft extending in the axial direction, a stator encompassing the rotor, and a stator housing that accommodates the stator and has an integral cooling duct. The cooling duct is formed by an alternating sequence of channels extending in the axial or circumferential direction and deflector portions which connect adjacent channels in a meandering fashion. | 01-15-2015 |
20150022035 | ROTATING ELECTRIC MACHINE - Provided is a rotating electric machine that is capable of sufficiently cooling, by using a liquid coolant, electronic devices which are attached to a rotor. The rotating electric machine is equipped with: a stator for generating a rotating magnetic field; a rotatable rotor that is installed so as to face the stator; diode devices that are connected to coils wound on the rotor and arranged so as to rotate with the rotor; and a cooling structure for cooling the diode devices by means of a cooling oil which is supplied from the inner side in the radial direction with respect to the diode devices. | 01-22-2015 |
20150035392 | LIQUID COOLED MOTOR FOR CABIN AIR COMPRESSOR - A method of manufacturing a nonconductive liquid cooled back iron heat exchanger to house a conductive cooling liquid is disclosed. This method may include forming layers of material via additive manufacturing to create channels for transporting cooling liquid. The layers may be staggered to create electrically insulated liquid cooling channels. This method may include providing cooling liquid from a power electronics cooling system (PECS) heat exchanger via a pressure drop between the PECS heat exchanger back iron heat exchanger. Also described herein is a liquid cooled stator cooling system, including an aircraft cabin air compressor motor. The motor may include a motor housing and a stator core. A liquid cooled back iron heat exchanger may be positioned between the motor housing and the stator core. | 02-05-2015 |
20150035393 | Liquid Cooled Electric Motor - A liquid-cooled, radial air gap electric motor includes a stator, a rotor, a rotor shaft, two end bells, a housing, a coolant manifold system, and a coolant sump. The rotor includes a plurality of axially directed slots located near its periphery. The coolant manifold system directs a first portion of liquid coolant to flow past some portion of the stator and a second portion of liquid coolant to flow through the rotor slots. Some or all of the liquid coolant is received by the coolant sump from which the coolant may be recirculated. | 02-05-2015 |
20150042185 | ELECTRICAL MACHINE HAVING A ROTOR FOR COOLING THE ELECTRICAL MACHINE - The invention relates to an electrical machine ( | 02-12-2015 |
20150042186 | ELECTRICAL SYSTEM AND METHOD FOR SUSTAINING AN EXTERNAL LOAD - An electrical power system is disclosed having at least a first magnetic power generator and at least a second magnetic power generator wherein a first part of the first magnetic power generator is positioned within the at least second magnetic power generator and a second part of the first magnetic power generator is positioned outside of the second magnetic power generator. Other systems and a method are also disclosed. | 02-12-2015 |
20150048699 | GENERATORS WITH OPEN LOOP ACTIVE COOLING - A rotor body for a high-speed generator includes a rotor body with interior and exterior surfaces, a coolant inlet and outlet, and a rotor cooling path for actively cooling the rotor body. The coolant inlet and outlet extend between the interior and exterior surfaces. An interior segment of the rotor cooling path fluidly couples the coolant inlet and coolant outlet and is bounded by the rotor body interior surface. An exterior segment of the cooling path is bounded by the rotor body exterior surface and fluidly couples the coolant outlet an environment external to the rotor body. | 02-19-2015 |
20150048700 | WATER-COOLED ELECTRICAL MOTOR - A water-cooled motor includes a housing ( | 02-19-2015 |
20150061424 | ROTATING ELECTRIC MACHINE - Provided is a rotating electric machine the interior of which can be suitably cooled. A coolant supply means of the rotating electric machine supplies a cooling fluid to the bottom of a tubular member from a location closer to one end of a rotary shaft than the bottom, and the bottom of the tubular member is equipped with through-holes that run in the axial direction of the rotary shaft, with the cooling fluid being supplied to the interior of the tubular member through the through-holes. | 03-05-2015 |
20150061425 | INTERNALLY COOLED SERVO MOTOR WITH SEGMENTED STATOR - An electrical device and servo motor that includes a stator having a plurality of poles, wherein each pole includes a first surface and a second surface; the first surface and the second surface are spaced apart and have a pair of slots defined between the first surface and the second surface on respective sides of each pole. The pair of slots is configured to receive at least one winding, and each pole further includes a cooling tube coupled to the first surface, wherein the cooling tube is at least partially encompassed within the first surface. | 03-05-2015 |
20150069865 | ELECTRIC MOTOR - An electric motor includes a rotor and a stator. The stator is fixed with respect to the drive-unit housing and includes windings, and the rotor is configured to rotate inside the stator about an axis. An air gap is defined between the rotor and the stator. The electric motor also includes an end-ring fixed to the rotor for rotation therewith. The electric motor is cooled by gravity feed via a fluid flowing onto and past the stator windings, from the windings to the rotor, and from the rotor back to the stator. The end-ring includes an annular channel configured to catch the fluid flowing from the windings to the rotor and divert the fluid away from the air gap as the fluid flows from the rotor back to the stator, thereby limiting spin losses in the electric motor. An electro-mechanical drive-unit employing the above-described electric motor is also disclosed. | 03-12-2015 |
20150069866 | ROTATING ELECTRIC MACHINE - A cooling device mounted in a flow path formed by an internal space of a cooling fluid duct being mounted on the periphery of a frame of a rotating electric machine is configured in such a manner that at least one of the end-face portions between a first end-face portion through which a cooling fluid flows into the cooling device and a second end-face portion from which the cooling fluid flows out thereof is placed tilting with respect to at least one of a first orthogonal surface perpendicular to an inflow direction of the cooling fluid and a second orthogonal surface perpendicular to an outflow direction of the cooling fluid, or with respect to a flow-path-width's direction perpendicular to a direction in which an axis line of a stator extends. | 03-12-2015 |
20150076939 | ROTARY MACHINE WITH DIRECT DRIVE - Rotary machine, in particular container treatment machine, including a rotating part which has several treatment stations, and a stationary part, the rotating part and the stationary part are embodied such that they together form the drive of the machine, the rotating part forming the rotor and the stationary part forming the stator of an electric motor. | 03-19-2015 |
20150084453 | ELECTRICAL MACHINE FOR USE IN THE AUTOMOTIVE SECTOR - An electrical machine for an automotive vehicle has a housing ( | 03-26-2015 |
20150091398 | ELECTRIC MACHINE WITH IN SLOT COOLING SYSTEM - An electric machine that includes a stator core having at least one slot and a winding in the slot. An elongate cooling conduit defines at least one projecting bend that is positioned in the slot. The projecting bend has first and second axially extending legs and an intermediate section. Coolant is conveyed through a first axial end opening of the slot within the first leg and then sequentially conveyed through the intermediate section and out the first axial end opening within the second leg. The projecting bend is in thermal communication with at least one of the winding and the stator core. A method of manufacture is also disclosed and may include bending a conduit having a uniform wall thickness and cross-section to form a plurality of projecting bends. The method may also include simultaneously inserting the projecting bends into respective slots from one end of the stator core. | 04-02-2015 |
20150097450 | SYSTEM AND METHOD FOR COOLING AN ELECTRIC MOTOR - A frame for an electric motor, the frame including an outer frame layer, an inner frame layer, and a liquid coolant passage positioned between the inner frame layer and the outer frame layer, wherein the inner frame layer includes a first opening to allow air from an air passage among a rotor of the electric motor to flow between the inner frame layer and the outer frame layer and across the liquid coolant passage. Therefore, interior components of the electric motor may be cooled. | 04-09-2015 |
20150097451 | MOTOR WITH COOLING DEVICE - A motor includes a main body and a cooling device. The cooling device includes a mounting seat defining an inlet hole and an outlet hole spaced from the inlet hole, and a cooling pipe communicating with the inlet hole and defining a plurality of ejection holes on a sidewall. The main body includes a rotor sleeved and sealed on the mounting seat. The cooling pipe is received in the rotor. Cooling liquid sprays at the rotor via the inlet hole and the ejection holes, and then the cooling liquid flow out of the rotor via the outlet hole. | 04-09-2015 |
20150108857 | STATOR AND ROTATING ELECTRIC MACHINE INCLUDING THE STATOR - A stator for a rotating electric machine includes an annular stator core, a stator coil and a resin adhesive. The stator coil is formed of a plurality of electric wires that are mounted on the stator core so as to be received in slots of the stator core. The resin adhesive is filled in the slots of the stator core to fix the electric wires in the slots. Each of the electric wires forming the stator coil includes an electric conductor and an insulating coat that covers an outer surface of the electric conductor. The insulating coat is two-layer structured to include an inner coat and an outer coat that is formed outside the inner coat. The coefficient of linear expansion of the outer coat is higher than the coefficient of linear expansion of the inner coat and lower than the coefficient of linear expansion of the resin adhesive. | 04-23-2015 |
20150115751 | PERMANENT MAGNET EMBEDDED ROTARY ELECTRIC MACHINE - A permanent magnet embedded. rotary electric machine includes: permanent magnets | 04-30-2015 |
20150123502 | COOLING STRUCTURE OF OIL COOLING MOTOR - A cooling structure of an oil cooling motor may include a housing, a front cover and a rear cover each mounted at both sides of a housing along a length direction of the housing, a rotor shaft extending through the housing and have both ends rotatably supported by bearings of the front cover and the rear cover, a rotor disposed in the housing and rotatably supported by the rotor shaft, a front oil supply groove and a rear oil supply groove formed on opposing inner sides of the front cover and the rear cover and configured to temporarily store oil stored in a bottom of the housing and scattered by churning of the rotor, and a front cover passage and a rear cover passage configured to communicate with the front oil supply groove and the rear oil supply groove, respectively. | 05-07-2015 |
20150130302 | Electrical Machine - In an electrical machine for the hybrid drive of a vehicle, an annular cooling jacket extends between a housing and a casing. The cooling jacket is connected to a coolant inlet and a coolant outlet so that coolant is axially introduced into the cooling jacket. The coolant inlet and the coolant outlet are situated next to each other in the circumferential direction of the housing and are hydraulically connected to a deflection section by way of coolant ducts. Coolant introduced into the cooling jacket flows in two partial flows in opposite directions, to the deflection section through coolant ducts forming an intake. The coolant is deflected back to the coolant outlet through a coolant duct forming a return. The coolant flows through the coolant duct of the return and the axially adjacent coolant duct of the intake in opposite directions. | 05-14-2015 |
20150130303 | SUPERCONDUCTING SYNCHRONOUS MOTOR - A superconducting synchronous motor having a simple and stable structure is provided. The superconducting synchronous motor according to one embodiment of the present invention comprises: a rotary shaft; a rotation core mounted at the rotary shaft so as to be rotated by connecting with the rotary shaft; and hooked magnetic poles extending from one end of the rotation core in a longitudinal direction. Each of the hooked magnetic poles is composed of first and second inductors of a magnetic material alternately engaged with each other and a superconducting wire to be wound, and comprises a first superconducting field winding and a second superconducting field winding fixed closely at the other end of a first inductor rotation core and the to other end of a second inductor rotation core, respectively. Each of the first superconducting field winding and the second superconducting field winding excites the first inductor and the second inductor to different poles. | 05-14-2015 |
20150137631 | DRIVE MODULE FOR A VEHICLE - A drive module for a vehicle has a transmission ( | 05-21-2015 |
20150137632 | ROTOR AND ROTATING ELECTRIC MACHINE INCLUDING THE ROTOR - A rotor includes a hollow cylindrical rotor core that has a center hole, in which a rotating shaft is to be press-fitted, and a plurality of magnet-receiving holes in which a plurality of permanent magnets are respectively received. In a radially inner surface of the rotor core defining the center hole, there are formed a plurality of non-contacting recesses and a plurality of contacting protrusions alternately in the circumferential direction of the rotor core. Each of the non-contacting recesses is recessed radially outward so as not to be in contact with the rotating shaft. Each of the contacting protrusions protrudes radially inward so as to be in pressed contact with the rotating shaft. The rotor core further has a plurality of through-holes each of which penetrates the rotor core in the axial direction of the rotor core and is located radially outside a corresponding one of the contacting protrusions. | 05-21-2015 |
20150145355 | ENCLOSURE FOR USE OF PRIME MOVER IN A HAZARDOUS ENVIRONMENT - A prime mover assembly is suitable for use in a hazardous environment. The prime mover assembly includes a hazardous rated enclosure, a non-hazardous rated prime mover disposed in the enclosure, and a gland assembly extending through the enclosure in communication with the prime mover. The gland assembly provides power and instrumentation through the enclosure to the prime mover. | 05-28-2015 |
20150145356 | VERSATILE COOLING HOUSING FOR AN ELECTRICAL MOTOR - An electrical device comprising a housing having cooling fins located in a central portion along an exterior surface of the housing and a laminated magnetic stack disposed within the housing and interfacing with an interior surface of the housing at the central portion. The cooling fins are configured alternatively higher and smaller on an inlet manifold and in opposition on an outlet manifold. | 05-28-2015 |
20150295473 | ROTARY ELECTRICAL MACHINE COOLING APPARATUS - A rotary electrical machine cooling apparatus includes: a rotary electrical machine including a stator having an annular resin portion which covers a coil end, and a rotor; and a cooling portion that injects a coolant from an upper side to the annular resin portion. The annular resin portion includes: an annular main body portion, and a plurality of island portions that protrude in the axial direction from a plurality of positions in a circumferential direction of an axially outer end face of the annular main body portion. The plurality of island portions include a plurality of first island portions having first maximum circumferential lengths and a second island portion that has a second maximum circumferential length L | 10-15-2015 |
20150303774 | ROTATING ELECTRICAL MACHINE - A mist is generated by scooping up cooling oil using a lower end portion of a non-load side end plate. Air containing this mist is circulated by a centrifugal fan provided to a load side end plate to form a recirculating air current flowing through first through-holes in a rotor core and through a ventilation passage on the outside of a rotor in opposite directions. According to a cooling mechanism as above, a mist generated in at least one point in the housing can be supplied with the recirculating air current to every point across a whole area within the machine. Hence, both of the rotor and a stator can be cooled efficiently with a small amount of mist. | 10-22-2015 |
20150318764 | PERMANENT MAGNET BURIED TYPE ELECTRIC MOTOR AND COMPRESSOR - A permanent magnet buried type electric motor includes a rotator having a rotator core and a stator. The rotator core includes: a plurality of magnet accommodating holes formed as many as the number of poles; a plurality of permanent magnets; air holes through which a coolant and a refrigerant oil pass; and a fastening hole. The magnet accommodating hole is formed into a shape that projects toward a radially inner side and is recessed toward a radially outer side. The air hole portions and the fastening holes are arranged so as to be alternately positioned. The air hole portion is formed into such a shape that includes a portion extending in an arc shape along an outer peripheral surface of a rotary shaft in a circumferential direction of the rotator core so that an area of the air hole portion is larger than an area of the fastening hole. | 11-05-2015 |
20150333602 | INTEGRATED SYSTEM OF TRACTION MOTOR AND INVERTER AND METHOD FOR INTEGRATING TRACTION MOTOR AND INVERTER - A method for integrating a traction motor and an inverter, the method including: 1) providing a traction motor, the traction motor including a motor housing and a coil winding; 2) providing an inverter, the inverter including: an inverter housing, and an IGBT module; 3) independently installing the inverter in the inverter housing to form an interface, the interface including a mechanical interface and a high-voltage power interface; 4) using the mechanical interface to install the inverter housing on the motor housing to form an entire body; and 5) using the high-voltage power interface to provide a high voltage electric connection between the coil winding of the traction motor and the IGBT module of the inverter. | 11-19-2015 |
20150340918 | CHAMBER FOR CONDUCTORS OF ELECTRIC MACHINES - The present disclosure relates to a chamber for housing strands of a stator bar for electric machines. | 11-26-2015 |
20150364956 | POLE SHOE COOLING GAP FOR AXIAL MOTOR - There is provided an axial flux motor comprising one or more rotating disks ( | 12-17-2015 |
20150372568 | ELECTRICAL MACHINE WITH DIRECT STATOR COOLING - An electromechanical transducer includes at least one rotor which is arranged on a shaft and is arranged in an encapsulated stator. The stator has a laminated core and a winding which are surrounded by an insulating cooling fluid. The cooling fluid can be introduced via first cooling ducts which are arranged radially with respect to the shaft in the center of the stator and can be discharged at each axial end of the stator radially with respect to the shaft via second cooling ducts in the winding head region, or vice versa. As a result it is possible to provide a compact and robust electromechanical transformer which owing to its lightweight design with a high torque density is suitable for use, for example, in aircraft or other vehicles. | 12-24-2015 |
20150381010 | ELECTRIC MACHINE WITH A COOLING DEVICE, AND METHOD FOR PRODUCING SAID MACHINE - An electric machine ( | 12-31-2015 |
20150381014 | WATER-COOLED MOTOR - A water-cooled motor may include a motor housing configured to be provided with a cooling water passage part in a circumferential direction and have one side surface provided with a radiation fin part, a stator configured to have a core wound with a coil along the cooling water passage part within the motor housing, and a rotor configured to have plates which each face a side of the stator and the radiation fin part and have one side provided with a turbulence generator in a direction of the radiation fin part side. | 12-31-2015 |
20160006302 | ARRANGEMENT FOR THE STATOR COOLING OF AN ELECTRIC MOTOR - Arrangement for the stator cooling of an electric motor, comprising a stator lamination package with a large number of axial stator laminations lined up axially, next to one another, and several axial winding grooves in the stator lamination package for the holding of corresponding stator windings. In accordance with the invention, a radial recess formed in one of the stator laminations leads into each of the winding grooves, wherein the radial recess communicates with a cooling liquid conduit provided on the stator lamination package for the delivery of cooling liquid. | 01-07-2016 |
20160013704 | ELECTRIC MOTOR AND METHOD OF COOLING | 01-14-2016 |
20160013705 | ROTATING ELECTRIC MACHINE | 01-14-2016 |
20160020658 | Stator of Rotating Electric Machine - In a stator of a rotating electric machine, an annular stator core has slots. A stator winding includes phase windings of three phases of differing electrical phases that are housed in the slots and wound around the stator core. Three phase bus bars electrically connect the respective phase windings to an external apparatus. Each of the phase windings are configured by multiple parallel windings. The phase bus bars are integrated with a fixing member to form a bus bar module. Each of the phase bus bars include branch portions and a trunk portion. The branch portions are electrically connected to the respective phase windings. The trunk portion electrically connects together the branch portions, and is configured that a cross-sectional area of an end portion closest to the phase winding is smaller than a cross-sectional area of an end portion closest to the external apparatus. | 01-21-2016 |
20160020673 | ROTOR COOLING - A rotor for an electrical machine includes a rotor core with a plurality of circumferentially spaced apart, axially extending wedges mounted to the rotor core. A rotor sleeve is mounted radially outboard of the rotor core. A respective flow channel is defined between each wedge and the rotor sleeve for passage of coolant therethrough. | 01-21-2016 |
20160020674 | ELECTRICAL MACHINE WITH SUPERCONDUCTING COILS - An electromechanical machine includes at least one coil made from a material that becomes electrically superconducting when its temperature is below a critical temperature. A functional part is contained in an internal volume of a thermally insulating and fluid-tight enclosure of the machine. A wall of the insulating enclosure is traversed in a fluid-tight fashion by at least one shaft for transmitting mechanical power between the functional part located in the internal volume of the insulating enclosure and a space outside the insulating enclosure. The functional part can be used as a heat sink, pre-cooled to maintain the temperature conditions for maintaining superconductivity inside the insulating enclosure. | 01-21-2016 |
20160020675 | ELECTRICAL MACHINES WITH LIQUID COOLING - A core for an electrical machine has a segmented body with first segments and second segments. The first segments extend from a radially inner portion of the segmented body to a radially outer portion of the segmented body. The second segments are axially stacked in alteration with the first layers along an axis of the segmented body. The first segments have thermal conductivity greater than thermal conductivity of the second segments for transferring heat from the radially outer portion of the segmented body to the radially inner portion of the segmented body. | 01-21-2016 |
20160028283 | Vacuum Gap Generators and Motors - In one embodiment, a generator or an alternating current (AC) motor includes a stator and a rotor. The rotor is configured to rotate at least partially within the stator or around the stator and is separated from the stator by a gap having a partial vacuum. The rotor includes a shaft configured to permit a flow of coolant and a plurality of microchannels formed within the rotor. The microchannels are fluidly coupled to the shaft and are configured to permit the coolant to pass from the shaft through at least a portion of the rotor in order to provide cooling for the rotor. | 01-28-2016 |
20160028284 | ELECTRIC MACHINE - The invention proposes an electric machine with a stator and a rotor that is movably supported relative thereto. The stator features a plurality of slots for accommodating a stator winding. The stator winding comprises several conductor sections that are respectively placed into each slot of the stator. On one side of the stator, the conductor sections are electrically short-circuited with one another in a short-circuit means. The short-circuit means comprises a cooling device. | 01-28-2016 |
20160036277 | STRAND CROSS-SECTION FOR HIGH FILL-FACTOR ELECTRIC MACHINE WINDINGS - A winding configuration for an electric machine includes a stator core with a plurality of winding slots, a plurality of conductor strands distributed in a winding slot of the plurality of winding slots, and an insulation matrix that surrounds each of the plurality of the conductor strands. The winding slot includes a slot cavity with a cross-section area and the plurality of distributed conductor strands are configured to maximize slot fill factor. | 02-04-2016 |
20160036297 | USE OF AN INVOLUTE SHAPED HOUSING SURROUNDING SHAFT(S) TO PROMOTE SHAFT ANNULUS FLUID FLOW - The powertrain includes a sump and an electric motor-generator configured to convert electrical energy into mechanical energy. The electric motor-generator includes a stator and a rotor. The rotor includes a rotor shaft and is configured to rotate about a shaft axis relative to the stator. The powertrain further includes an output shaft rotatable about the shaft axis and extending through the rotor shaft along the shaft axis. The output shaft and the rotor shaft jointly define a substantially annular gap therebetween. The electric motor-generator also includes a motor housing covering the stator and the rotor. The motor housing defines a housing passageway in fluid communication with the sump and the substantially annular gap. The housing passageway includes a substantially involute shaped portion in order to facilitate flow of the cooling fluid from the sump to the substantially annular gap. | 02-04-2016 |
20160043607 | COOLABLE MACHINE HOUSING - A coolable machine housing of an electric machine has a housing shell formed as an extruded section with integrated cooling ducts. The housing shell can be covered at the end faces by bearing end plates. The axially extending cooling ducts communicate with one another through connecting ducts. The cooling ducts in the extruded housing shell extend in pairs as cooling duct pairs between the shell end faces. The connecting ducts are boreholes that penetrate the outer wall by way of borehole openings that are closed by way of closing elements. | 02-11-2016 |
20160043608 | ELECTRIC MACHINE HAVING A FIRST CIRCUIT AND A SECOND CIRCUIT, METHOD FOR COOLING AN ELECTRIC MACHINE AND MOTOR VEHICLE HAVING AN ELECTRIC MACHINE - An electric machine includes a first circuit through which a first working fluid can flow and a second circuit through which a second working fluid can flow. The first circuit and the second circuit are formed hermetically. In order to cool the electric machine particularly well, the first circuit and the second circuit have a common heat exchanger surface which is constructed in such a way that thermal energy from the first working fluid of the first circuit can be transmitted to the second working fluid of the second circuit or vice versa from the second working fluid to the first working fluid by way of the heat exchanger surface. A method for cooling an electric machine and a motor vehicle having an electric machine are also provided. | 02-11-2016 |
20160043613 | THERMALLY CONDUCTIVE ROTOR WEDGES - A wedge for an electrical machine core includes a hollow wedge body including a wedge wall extending in an axial direction. The wedge wall separates an interior hollow space of the wedge body from a space exterior to the wedge body. A phase change material can be housed within the interior hollow space of the wedge for regulating heat transfer through the wedge. An electrical machine includes a wound rotor including an electrical steel core and a plurality of wedges mounted to the electrical steel core with electrical machine windings retained between each wedge and the core body. Each of the wedges includes a hollow wedge body as described above. | 02-11-2016 |
20160056683 | MOTOR - A motor includes a rotating shaft, a rotor, a stator, a bracket, and a control device mounted on the bracket. The bracket includes a cylindrical bracket main body, and a stator frame which faces the bracket main body across a clearance and holds an outer surface of the stator on the radially inward side of the bracket main body. The control device is mounted on the bracket main body. The bracket is provided with a cooling passage, and an inflow port and an outflow port connected with the cooling passage. The cooling passage includes a control device cooling passage provided between the bracket main body and the control device, a stator cooling passage provided between the bracket main body and the stator frame, and a communication passage coupling the control device cooling passage and the stator cooling passage. | 02-25-2016 |
20160099624 | END TURN SUPPORT AND COOLING FIXTURE - A generator rotor system having various features is disclosed. The generator rotor system has at least one main stage generator rotor with winding-pole sets spaced annularly about the rotor. The tendency of the windings to distort and or displace under the centrifugal force of the spinning rotor is ameliorated by a winding retention member disposed axially outboard of the winding-pole sets. The winding retention member may also have a one or more cooling oil routing hole to enhance the flow of cooling oil among the windings. | 04-07-2016 |
20160105080 | BI-DIRECTIONAL MOSFET COOLING FOR AN ELECTRIC MACHINE - A power module for an electric machine. The power module includes a thermally conductive base having opposite first and second surfaces. The first surface is adapted for mounting the power module in conductive thermal communication with a heat sink. A MOSFET superposes the base second surface and is in conductive thermal communication with the base. A MOSFET driver superposes the base second surface and is operatively connected to the MOSFET. The transference from the power module of heat generated by the MOSFET and the MOSFET driver from the power module is directed along a primary cooling path to the heat sink through the base and a secondary cooling path to ambient air. The primary and secondary cooling paths are separate from each other. An electronics package and an electric machine including a power module are also disclosed. | 04-14-2016 |
20160105082 | AXIALLY EXTENDING ELECTRIC MACHINE ELECTRONICS COOLING TOWER - An electronic package adapted for connection to a rear frame member of an electric machine. The electronic package includes a cooling tower having first and second axial ends. The cooling tower includes a metallic wall defining radially inner and outer wall surfaces and extending about the package central axis. The radially inner wall surface defines an axially extending air passage through the cooling tower with an inlet proximate the first axial end. Spaced metallic ribs are in conductive thermal communication with the radially inner wall surface traverse and the air passage. Power electronics devices are attached in conductive thermal communication to the radially outer wall surface. The cooling tower provides a heat sink for the power electronics devices with a primary cooling path for each of the power electronics device extending radially inwardly to the cooling tower. An electric machine including such an electronic package is also disclosed. | 04-14-2016 |
20160105083 | MOTOR APPARATUS FOR VEHICLE - A motor apparatus for a vehicle includes a motor unit, an inverter unit, a case, and a pump. The case has a motor space accommodating the motor unit, two or more inverter spaces each accommodating the inverter unit, and a cooling passage. The inverter spaces are provided adjacent to the motor space via respective walls, and each accommodating at least one of the capacitor, the power converter, and the control circuit. The cooling passage includes a first cooling part configured to cool the power converter and a second cooling part configured to cool the capacitor. A length of the cooling passage from a discharging part of the pump to the first cooling part is made shorter than a length of the cooling passage from the discharging part to the second cooling part. | 04-14-2016 |
20160105084 | MOTOR APPARATUS FOR VEHICLE - A motor apparatus for a vehicle includes a motor unit, an inverter unit, a case, and a pump. The case has a motor space, an inverter space, and a cooling passage, the motor space accommodating the motor unit, the inverter space accommodating the inverter unit, the cooling passage being configured to let cooling medium flow through the cooling passage to cool the motor unit and the inverter unit. The pump is configured to forward the cooling medium to the cooling passage, and is disposed in a surrounding space within the motor space, the surrounding space being at a periphery of a rotation angle sensor fixed to a shaft of the motor unit. | 04-14-2016 |
20160116074 | PRESSURE-REGULATING VALVES - A pressure-regulating valve assembly includes a sleeve body and a spool. The sleeve body has an interior surface and a sense port. The spool has an external surface and is slideably received within the sleeve body such that the external spool surface and the sleeve body interior surface define therebetween a plurality of sleeve body chambers. A first of the sleeve body interior chambers is a deadheaded chamber in fluid communication with the environment external to the sleeve body through the sense port for controlling pressure of fluid traversing the pressure-regulating valve assembly. | 04-28-2016 |
20160118849 | ELECTRICAL MACHINE WITH INNER STATOR - It is designed for traction motors in motor-in-wheels, fans, and direct driving electric machines. The inner stator ( | 04-28-2016 |
20160118857 | COOLING UNIT OF DRIVE MOTOR - A cooling unit of a drive motor for cooling a stator of the drive motor includes a guide path disposed between an inner side of a motor housing and an outer side of the stator forming a flow path through which coolant repeatedly flows in an axial direction of the stator. | 04-28-2016 |
20160118863 | TWO-PHASE ELECTRIC MOTOR COOLER - An electric motor system includes a motor housing and a stator core disposed within the motor housing. The stator core includes a back iron heat exchanger for passing fluid therethrough. A fluid inlet is disposed at a first portion of the back iron heat exchanger that is at least partially in fluid communication with a liquid coolant source and is configured to accept a cooling mixture. A fluid outlet is disposed at a second portion of the back iron heat exchanger for outletting a gas coolant from the back iron heat exchanger such that liquid coolant is convertible to the gas coolant in the back iron heat exchanger by receiving energy from the stator core allowing the gas coolant exit through the outlet and thereby removing heat from the stator core. | 04-28-2016 |
20160126808 | DRIVING DEVICE AND VEHICLE WITH THE SAME - A driving device according to one aspect of the present disclosure includes: a motor including a winding wire; a first cooler configured to cool the motor; and a power converter coupled to the motor. The motor, the first cooler, and the power converter are arranged in this order along a first direction. | 05-05-2016 |
20160126809 | Electric-Electronic Actuator - An actuator housing assembly that includes an actuator housing that has a cavity that contains a phase-change material that is configured to continue to absorb heat as the phase-change material changes phases. The actuator housing assembly also includes an electronic actuator that is secured to the actuator housing. At least a portion of the cavity may be positioned to surround at least a portion of the electronic actuator. The phase-change material is configured to prevent the transfer of heat in the actuator housing to the electronic actuator. The actuator housing may also include an electronic control board that is used in controlling the operation of the electronic actuator. | 05-05-2016 |
20160129792 | METHOD FOR MANUFACTURING COOLER FOR SEMICONDUCTOR-MODULE, COOLER FOR SEMICONDUCTOR-MODULE, SEMICONDUCTOR-MODULE AND ELECTRICALLY-DRIVEN VEHICLE - A cooler for a semiconductor-module includes: a heat sink which has an appearance of a cuboid structure to one side of which a flow rate control plate is fixed; a thermal radiation plate on an outer surface of which semiconductor devices are bonded; and a tray-shaped cooling jacket having: a coolant introduction channel; a coolant extraction channel extending in parallel to the coolant introduction channel; and a cooling channel provided between the coolant introduction and extraction channels. The heat sink is provided in the cooling channel of the cooling jacket so that the flow rate control plate extends in a boundary between the coolant extraction channel and the cooling channel, and channels provided for the heat sink extend orthogonally to the coolant introduction and extraction channels. The thermal radiation plate is fixed so as to close an opening the cooling jacket. | 05-12-2016 |
20160134169 | STATOR ASSEMBLY UNIT OF DRIVE MOTOR OF HYBRID VEHICLE - A stator assembly unit of a drive motor includes a stator core fixedly mounted to an inside of a housing of a power transmission element in the drive motor of a hybrid vehicle, and includes a securing member mounted to an inside wall of the housing by press fitting for securing the stator core, where the securing member has an annular shape to form a flow passage as one unit to enable flow of a cooling medium. | 05-12-2016 |
20160134176 | SYSTEM FOR LIQUID COOLING FOR A PUMP MOTOR - A system for liquid cooling for a motor for a pump is provided. The system includes a motor configured to be coupled to a pump to move a liquid from an inlet side of the pump associated with a first pressure to an outlet side of the pump associated with a second pressure that is greater than the first pressure. The system additionally includes a heat transfer tube adjacent to at least a portion of the motor. The heat transfer tube is configured to receive at least a portion of the liquid from the outlet side of the pump and transfer heat away from said motor using the liquid. | 05-12-2016 |
20160141921 | HELICAL HEAT EXCHANGER FOR ELECTRIC MOTORS - An electric motor has a stator, a rotor, and a helical heat exchanger disposed outboard of the stator. The helical heat exchanger includes: an inner sleeve; an outer sleeve coaxially disposed with and outboard of the inner sleeve with a void therebetween; at least one helical wall disposed in the void between the inner and outer sleeves extending from one end to an opposite end of the inner and outer sleeves; the at least one helical wall forming a fluid tight seal along its helical path to define at least one helical fluid flow path in the void between the inner and outer sleeves; and the at least one helical fluid flow path configured to permit at least one heat transfer medium to helically travel within the void between the inner and outer sleeves. | 05-19-2016 |
20160141938 | WINDING COOLING STRUCTURE OF SHAFT MOTOR - A winding cooling structure of shaft motor includes a chamber in which multiple annular windings are received. A cooling fluid is filled up in the chamber to possibly contact the surfaces of every part of the respective windings. Therefore, heat generated by the windings can be quickly transferred to the cooling fluid around the windings and dissipated. Accordingly, in operation, the heat dissipation efficiency of the shaft motor can be enhanced to prolong lifetime of the motor and ensure the performance of the motor. | 05-19-2016 |
20160149450 | EMBEDDED PERMANENT MAGNET ROTARY ELECTRIC MACHINE - A permanent magnet | 05-26-2016 |
20160149451 | ROTOR ASSEMBLY FOR AN ELECTRIC MACHINE - A rotor assembly for an electric machine includes a core having at least one post and a cap wherein electrical windings are wound about the rotor assembly to define a pole. The rotation of the rotor and rotor pole relative to a stator generates a current supplied from the electric machine to a power consuming device. | 05-26-2016 |
20160156251 | A Stator And A Rotor For An Electric Motor | 06-02-2016 |
20160156252 | ELECTROMECHANICAL ACTUATOR HAVING AN OIL AND WATER THERMAL SYSTEM | 06-02-2016 |
20160164377 | Motor Cooling System - A motor assembly with an integrated cooling system is provided in which a coolant (e.g., oil) is injected into a hollow region of the rotor shaft. The coolant is expelled out of the rotor shaft and into the motor enclosure via multiple thru-holes, thereby allowing efficient cooling of both the stator and the rotor assemblies. | 06-09-2016 |
20160164378 | Motor Cooling System - A motor assembly with an integrated cooling system is provided in which a coolant (e.g., oil) is injected into a hollow region of the rotor shaft. The coolant is expelled out of the rotor shaft and into the motor enclosure via multiple thru-holes, thereby allowing efficient cooling of both the stator and the rotor assemblies. | 06-09-2016 |
20160172937 | ELECTRICAL MACHINE WITH REDUCED WINDAGE | 06-16-2016 |
20160172938 | METHODS AND SYSTEMS OF AIR BUBBLE FLUSHING IN LIQUID COOLED GENERATORS | 06-16-2016 |
20160172939 | A CONTROL MODULE FOR AN ELECTRIC MOTOR OR GENERATOR | 06-16-2016 |
20160197536 | SYSTEMS AND METHODS FOR DIRECT WINDING COOLING OF ELECTRIC MACHINES | 07-07-2016 |
20160204678 | COOLING OF AXIAL FLUX MOTORS - CENTRIFUGAL | 07-14-2016 |
20160204680 | ELECTRIC MACHINE WITH COMBINED AIR AND WATER COOLING | 07-14-2016 |
20160254719 | MOTOR ASSEMBLY | 09-01-2016 |
20160254730 | METHOD AND DEVICE FOR LIQUID COOLING OF ELECTRIC MOTOR AND TRANSMISSION CONFIGURATION | 09-01-2016 |
20160380504 | ROTATING ELECTRICAL MACHINE AND COOLING SYSTEM OF ROTATING ELECTRICAL MACHINE - A rotating electrical machine includes a housing having an approximately cylindrical shape; a stator and a rotor that are accommodated in the housing; and a cooling frame that is provided on an outer circumferential surface of the housing and circulates a first liquid refrigerant, in which the cooling frame has a partially cylindrical shape. By setting the cooling frame to have the partially cylindrical shape, it is possible to obtain cooling structure capable of obtaining a reduction in size and weight while securing the strength. | 12-29-2016 |
20160380515 | HYBRID MODULE AND POWER ELECTRONICS MODULE WITH A SHARED COOLING STREAM - A hybrid module for a hybrid drive unit, where the hybrid module may have a stream of coolant flowing through it, which also flows through a power electronics module for operating the hybrid module is provided. A power electronics module and to a method for installing a hybrid module is also provided. | 12-29-2016 |
20170232831 | VEHICLE DRIVE DEVICE | 08-17-2017 |
20170237317 | COMPRESSOR SYSTEM | 08-17-2017 |
20180026504 | METHOD AND ASSEMBLY OF A GENERATOR | 01-25-2018 |
20190149017 | ROTARY ELECTRICAL MACHINE WITH OPTIMISED COOLING | 05-16-2019 |
20190149018 | METHOD AND ASSEMBLY OF A POWER GENERATION SYSTEM | 05-16-2019 |
20220140699 | SEALING SLEEVE FOR A STATOR OF AN ELECTRICAL MACHINE - A sealing sleeve for a stator of an electrical machine is disclosed. The sealing sleeve is configured to provide that a coolant flowing around the stator coils follows a predefined, serpentine coolant path. The sleeve has two sealing rings arranged on the stator with the coils of the stator lying between them. Each sealing ring includes a hard component and a soft component. The sleeve is arranged on the stator such that sealing sections of the soft component bear against the surfaces of the stator coils and adapt to the coil surfaces. As such, no coolant may pass between the coils and the sealing rings at these sealing locations thus formed, and therefore the desired coolant flow is guaranteed. Furthermore, the sealing rings are configured such that alternately for each coil only one of the sealing rings has a sealing section so that ultimately the serpentine coolant flow is achieved. | 05-05-2022 |
20220140700 | Wick Assisted Embedded Evaporative Cooling of Motors - A cooling system for an electric motor that includes a stator having a plurality of slot windings and a rotor, coaxial with the stator, having a plurality of magnets, includes a coolant inlet to the motor and a coolant outlet from the motor. A coolant pathway is in fluid communication with the inlet and the outlet. Heat is transferable from the slot windings to the coolant pathway. A coolant flows through the coolant pathway and is in a liquid phase as it enters the coolant inlet, changing into a gaseous phase as heat is transferred to the coolant from the slot windings. A cooling loop is in fluid communication with the coolant inlet and the coolant outlet. The cooling loop cools the coolant so that substantially all of the coolant is in the liquid phase when it enters the coolant inlet. | 05-05-2022 |