| Entries |
| Document | Title | Date |
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| 20080231131 | Commercial Low Cost, High Efficiency Motor-Generator - A motor-generator includes a rotor that rotates about an axis of rotation, and a stator that is stationary and magnetically interacts with the rotor. The rotor is constructed of two spaced apart rotor portions having magnetic poles that drive magnetic flux across an armature airgap formed therebetween. An armature, located in the armature airgap, has a substantially nonmagnetic and low electrical conductivity form onto which wire windings are wound. The form has a free end that extends inside the rotor, and a support end that attaches to the stationary portion of the motor-generator. The form is constructed with a thin backing portion and thicker raised portions extending from the backing portion in the direction of the magnetic flux. The wire windings have multiple individually insulated conductor wire. The conductors of a single wire are electrically connected together in parallel and electrically insulated between each other along their length inside the armature airgap. The wire windings are wound on to the form by inserting the wire to lie between the raised portions; the form provides position location and support for the wire windings during the winding process, and subsequently reacts the electromagnetically induced torque on the windings to the stationary portion of the motor-generator through the support end of the form and prevents the windings from contacting the rotor portions during rotation of the rotor. | 09-25-2008 |
| 20080231132 | PERMANENT MAGNET GENERATOR AND WIND POWER GENERATOR USING THE SAME - A permanent magnet generator is provided that is not bulky and does not impede wind capture by a wind turbine. The permanent magnet generator includes a generator shaft; at least three rotors secured with the generator shaft, each rotor including a plate-shaped structure having a permanent magnet attached thereto, each plate-shaped structure being disposed in the longitudinal direction of the generator shaft; and a stator, including a plate-shaped structure with a stator coil of a wound copper wire disposed in at least two gaps formed by the rotors and evenly-spaced apart from the generator shaft. The rotors and stators are disposed alternately in the longitudinal direction of the generator shaft, with a total of not less than five stages. Furthermore, a wind power generator obtained by installing a propeller on the shaft of this permanent magnet generator is provided. | 09-25-2008 |
| 20080278014 | FLAT ELECTRICAL GENERATOR - An electrical generator includes a rotary disk that is made of plastic injection molding in which a plurality of coils each having an exposed contact is embedded. Two stationary disks are arranged on opposite sides of the rotary disk and each has an inside surface that opposes the rotary disk and carries two semi-circular magnets. The rotary disk is fixed to a shaft having opposite ends fit into bearings that are received in central bores defined in the stationary disks. The coils are each formed by winding a wire in at least one turn in the form of a circle or an ellipse, the turns being coincident with each other or partially offset with respect to each other. Or alternatively, the coils are formed concentric with respect to each other and the rotary disk. | 11-13-2008 |
| 20080303367 | VARIABLE SPEED CONSTANT FREQUENCY MOTOR - A variable speed isosychronized motor includes two annular stators conformed for variable angular alignment relative to each other and a common rotor extending a plurality of isolated loops to cross-induce power between stators once such are angularly displaced. In this form of losses, attendant to speed variation through stator phasing are reduced. Electrical compensation may be inserted between each terminal pair. Potentiometers in parallel with capacitors and may be inserted between the respective terminals to expand the operating range of the device. | 12-11-2008 |
| 20090072645 | Composite electromechanical machines with gear mechanism - Embodiments of the present invention include a composite electromechanical machine which can operate as a motor or a generator (including dynamo or alternator). In an aspect, the present composite electromechanical machine comprises at least two rotating elements (rotor) and one stationary element (stator) where the two rotating elements are coupled through a gear mechanism. The gear mechanism can combine the torque of the inner and the outer rotor, preferably using helical gears which have lower noise level and higher contact area. The gear mechanism can also act as a locking mechanism to keep the outer rotor in place. The gear mechanism can comprise a first gear coupled to the inner rotor and a second gear coupled to the outer rotor. In an embodiment, the first and second gears are coupled together to connect the inner and the outer rotors. The gear mechanism can further comprise a third gear coupled to the double-sided stator. In an embodiment, the first and third gears and the second and third gears are coupled to each other, respectively. Other embodiments can also be included. | 03-19-2009 |
| 20090091204 | MOTOR HAVING TWIN-ROTOR - A motor includes a stator, a first rotor and a second rotor. The stator has a plurality of outer teeth projecting outward from an annular stator yoke, a plurality of inner teeth projecting inward from the stator yoke, and windings wound on both of the teeth. Instead of providing both of the teeth with the windings, toroidal windings can be wound on the stator yoke at each section sandwiched between the slots, which stator yoke is disposed between each one of the inner slots and corresponding each one of the outer slots. This motor is structured such that the phases of cogging torque and torque ripple existing between the stator and the second rotor can be reversed with respect to the phases of cogging torque and torque ripple existing between the stator and the first rotor. | 04-09-2009 |
| 20090096307 | HYBRID VEHICLE - A hybrid vehicle implements a required traveling condition by generating a required driving force necessary to drive the vehicle even in the case where a supply source of a working fluid develops a malfunction. The hybrid vehicle is equipped with a motor which changes the phase difference between two rotors and an engaging/disengaging device which turns on/off the supply of a driving force of an internal combustion engine, the motor and the engaging/disengaging device being driven by a working fluid. The hybrid vehicle further includes a clutch which carries out the engagement/disengagement between a first drive shaft through which a driving force of an engine is transmitted and a second drive shaft through which a driving force of the motor is transmitted to wheels, an electrically-operated first pump capable of supplying hydraulic oil to a relative rotational force generator of the motor and the clutch, a mechanical second pump which is driven by the engine and which is capable of supplying the hydraulic oil to the clutch, and a solenoid selector valve for selectively switching the source of supply of the hydraulic oil to the clutch to the first pump or the second pump. | 04-16-2009 |
| 20090200884 | COMPACT HIGH POWER ALTERNATOR - An apparatus for converting between mechanical and electrical energy, particularly suited for use as a compact high power alternator for automotive use and “remove and replace” retrofitting of existing vehicles. Various aspects of the invention provide a means of significantly increasing the output of permanent magnet alternators while addressing the issues of radial loading applied to a permanent magnet alternator rotor. Another aspect of the invention allows for the production of power in two discrete voltages. An aspect of this invention allows for a marked increase in output capability without increasing axial length through the use of magnetic fringing. One aspect of the invention offers an effective means of mounting a skewed stack that eliminates or reduces cogging that is present in a permanent magnet machine without negatively impacting airflow. Another aspect of the invention reduces cogging by radially offsetting opposing magnets of a dual rotor permanent magnet machine. | 08-13-2009 |
| 20090309442 | HIGH TORQUE DENSITY ELECTRICAL MACHINE - An electrical machine is provided. The electrical machine includes a rotor comprising an inner rotor having a plurality of inner rotor poles and an outer rotor having a plurality of outer rotor poles. The electrical machine further comprises a stator configured to modulate a magnetic flux and to transmit torque to inner rotor and the outer rotor, the stator comprising a stator core interposed concentrically between the inner rotor and the outer rotor; a multiple of stator windings disposed in a plurality of stator slots, the stator windings configured to form a multiple of stator poles. The stator further comprises a plurality of stator teeth interposed between the plurality of stator slots, wherein an arithmetic sum or difference of twice number of stator teeth and a number of the stator poles equals a number of rotor poles. | 12-17-2009 |
| 20090309443 | SYNCHRONOUS PERMANENT MAGNET MACHINE - A synchronous permanent magnet machine for at least two rotation speeds has a single stator and at least two rotors. For each rotation speed there is provided a separate rotor with a different numbers of poles. The armature windings on the stator extend across all of the rotors and the windings are subjected to a rotating field with the same frequency. | 12-17-2009 |
| 20100026122 | VARIABLE SPEED CONSTANT FREQUENCY MOTOR - A variable speed isosychronized motor includes two annular stators conformed for variable angular alignment relative to each other and a common rotor extending a plurality of isolated loops to cross-induce power between stators once such are angularly displaced. In this form of losses, attendant to speed variation through stator phasing are reduced. Electrical compensation may be inserted between each terminal pair. Potentiometers in parallel with capacitors and may be inserted between the respective terminals to expand the operating range of the device. | 02-04-2010 |
| 20100033048 | Hybrid Step Motor - A hybrid step motor comprises a stator, a rotor assembly, a magnet and a mandrel. The rotor assembly and the magnet are mounted on the mandrel and are disposed in the stator. The proportion of a stator outer diameter to a stator inner diameter is 1:0.475 to 1:0.6. The proportion of the stator outer diameter to a rotor outer diameter is 1:0.5125 to 1:0.5875. The proportion of a first rotor thickness to a magnet thickness to a second rotor thickness is 0.236:0.09:0.236 optimally. The proportion of the rotor outer diameter to a magnet outer diameter is 0.54:0.45. By such arrangements, the optimal proportion is formed and the output efficiency is improved. | 02-11-2010 |
| 20100084936 | Generic Crimped Rotor for an Electric Brushless Direct Current Motor - A rotor having a substantially cylindrical configuration for use in a brushless direct current electric motor having a high torque to size ratio. The rotor has an outer peripheral surface. The rotor also has a central rotor shaft and a first and second retaining ends mounted on the central rotor shaft and spaced from one another. The rotor also has a plurality of magnets configured to provide a magnetic flux with a stator disposed around the central rotor shaft. The magnets are radially disposed on the shaft and the rotor also has a sheath. The sheath is crimped around the radially disposed permanent magnets, and holds the magnets around the shaft. The sheath is lightweight and minimizes a gap between the permanent magnets and the stator to provide for an electromagnetic flux between the magnets and the stator windings, and for rotation of the central rotor shaft. | 04-08-2010 |
| 20100090553 | POLYPHASIC MULTI-COIL GENERATOR - A polyphasic multi-coil generator includes a driveshaft, at least first and second rotors rigidly mounted on the driveshaft so as to simultaneously synchronously rotate with rotation of the driveshaft, and at least one stator sandwiched between the first and second rotors. The stator has an aperture through which the driveshaft is rotatably journalled. A stator array on the stator has an equally circumferentially spaced-apart array of electrically conductive coils mounted to the stator in a first angular orientation about the driveshaft. The rotors and the stator lie in substantially parallel planes. The first and second rotors have, respectively, first and second rotor arrays. | 04-15-2010 |
| 20100156221 | MULTI-ROTOR ELECTRIC MACHINE - Electric machines comprising a plurality of magnetized rotors, preferably including bi-pole magnets. The rotors are configured to drive and/or be driven by a common shaft, as for example by suitable configurations of gears. The rotors are magnetically indexed, in pairs, with respect to each other and to corresponding electrical windings, such that, when a current is passed through the one or more windings, the rotors provide phased rotary power to the common shaft; or, when torque is applied to the common shaft, a phased electrical output is provided to the windings. | 06-24-2010 |
| 20100207474 | MOTOR-GENERATOR HAVING STATOR AND INNER AND OUTER ROTORS - A motor-generator has a stator including an annular stator core and stator windings wound on the stator core, an annular inner rotor located radially inward of the stator core, and an annular outer rotor located radially outward of the stator core. Each of the inner and outer rotors is made of a soft magnetic material or magnetic steel. The stator core consists of a plurality of stator core segments each being in the form of a tooth. The stator windings are wound on the stator core in a continuous distributed winding manner at a predetermined winding pitch. The outer rotor consists of a plurality of outer rotor segments each of which is magnetically polarized to have opposite polarities on opposite circumferential ends thereof. Each of the outer rotor segments is offset from the inner rotor by a predetermined electrical angle that corresponds to the winding pitch of the stator windings. | 08-19-2010 |
| 20100253168 | ELECTRIC DRIVE, PARTICULARLY FOR A FUEL METERING UNIT FOR AN AIRPLANE ENGINE - An electric drive, particularly for a fuel metering unit for delivering and metering fuel from a fuel tank into a combustion chamber of an airplane engine, is disclosed. The electric drive drives at least one work module and is composed of at least two engine modules that are supplied separately with electricity and disposed on a common rotor shaft to form a redundant engine arrangement. | 10-07-2010 |
| 20100270884 | Zero phase - One embodiment of a more efficient induction motor is using both sides of the electric magnetic coils ( | 10-28-2010 |
| 20100283345 | ELECTRICAL MACHINES - Embodiments provide an electrical machine bearing first and second pluralities of permanent magnets having different number of pole pairs, a plurality of pole-pieces that enable the magnetic interaction between the pluralities of permanent magnets, and winding that couples with the first/fundamental harmonic of the first plurality of permanent magnets to enable electromechanical energy conversion. | 11-11-2010 |
| 20100308674 | MAGNETIC MACHINE - To provide a magnetic machine capable of reducing the ripple and cogging of torque or thrust. An electric motor | 12-09-2010 |
| 20110031838 | ELECTRIC MACHINE WITH SINGLE STATOR AND TWO MUTUALLY INDEPENDENT ROTORS, AND ROAD VEHICLE PROVIDED WITH SAID ELECTRIC MACHINE - An electric machine provided with: a stator, equipped with a single stator winding; at least two shafts, which are independent of one another and are mounted so that they can turn; at least two rotors, which are independent of one another, are magnetically coupled to the stator, and are mounted on the shafts; and a single electronic power converter, which is connected to the stator winding for supplying the stator winding itself with a total electric current. | 02-10-2011 |
| 20110101810 | SERIAL CONNECTION STRUCTURE OF DIRECT-DRIVE MOTOR - A serial connection structure of a direct-drive motor, including a central shaft, a housing, at least two rotors and stators of the same number as the rotors. The central shaft has a predetermined length. The housing has an internal space and is coaxially fitted around the central shaft. The rotors are received in the housing and coaxially rotatably fitted on the central shaft at predetermined intervals. The stators are received in the housing and coaxially fitted around the central shaft corresponding to the rotors respectively. The stators are spaced from the rotors by a predetermined distance. The serial connection structure is applicable to a generator or a wind power generator system without extra connecting with any transmission gear system. Therefore, the number of components is decreased, the maintenance cost is lowered and the service is simplified. | 05-05-2011 |
| 20110109184 | TANDEM ROTOR SERVO MOTOR - A tandem rotor servo motor assembly is provided comprising a first phase element positioned on a shaft, the first phase element having a first rotor in communication with the shaft and surrounded by a stator carrying four magnetic poles, each of said poles exerting a magnetic force when said poles are electrically charged. A second phase element is positioned on the shaft a first distance from the first phase element, the second phase element having a second rotor in communication with the shaft and surrounded by a stator carrying four magnetic poles, each of said poles exerting a magnetic force when said poles are electrically charged. A third phase element is positioned on the shaft a second distance from the second phase element, the third phase element having a third rotor in communication with the shaft and surrounded by a stator carrying four magnetic poles, each of said poles exerting a magnetic force when said poles are electrically charged. The second rotor is offset about the shaft from the first rotor by sixty degrees of rotation and the third rotor being offset about the shaft from the first rotor by one hundred and twenty degrees of rotation. | 05-12-2011 |
| 20110115326 | ELECTRICAL MACHINES - Embodiments of the present invention provide an electrical machine comprising a first moveable element having a first plurality of permanent magnets associated therewith, a winding arranged generally adjacent to the first moveable element, wherein the winding is arranged to interact magnetically with a magnetic field of the permanent magnets associated with the first moveable element; a second plurality of permanent magnets; a second moveable element arranged adjacent to the first moveable element and having a plurality of a plurality of pole-pieces associated therewith, wherein the pole pieces are arranged to modulate the fields of the first and second pluralities of permanent magnets to enable magnetic coupling there-between, such that the first and second moveable elements move in a magnetically geared manner. | 05-19-2011 |
| 20110148237 | COUNTER-ROTATABLE GENERATOR - A counter-rotatable generator includes a generator stator concentric with concentric counter-rotatable radially inner pole and outer magnet rotors. The magnet rotor encircles the pole rotor and the pole rotor encircles the generator stator. A rotor air gap is disposed between the magnet and pole rotors, and a transformer air gap is disposed between the pole rotor and the stator. The magnet rotor includes a circular array of magnets having circumferentially alternating north/south and south/north orientations, retained within a magnet retention ring, and the magnets are circumferentially separated from each other by non-magnetic material spacers. One stator includes an annular hub, axial windings around equi-distantly spaced axial poles on the annular hub, radial cores extending radially outwardly from and equi-angularly spaced about a pole hub on the annular hub between the first and second axial windings, and radial windings around the radial cores. | 06-23-2011 |
| 20110156519 | AXIAL GAP ROTATING ELECTRICAL MACHINE AND ROTOR USED THEREFOR - In the axial gap rotating electrical machine, the rotor includes a rotor yoke that is formed by wrapping amorphous ribbon wound toroidal core, which is obtained by winding an amorphous magnetic metal ribbon into a toroidal core. Magnets having plural poles are circumferentially disposed on a stator-facing surface of the amorphous ribbon wound toroidal core. | 06-30-2011 |
| 20110163623 | ELECTRICAL MACHINES - Embodiments provide an electrical machine, comprising: first and second moveable elements arranged to interact in a magnetically geared manner via a magnetic field created, at least in part, by a first electrical winding arrangement associated with the first moveable element; and a second electrical winding arrangement which is arranged to interact magnetically with a fundamental harmonic of a magnetic field created by the first electric winding arrangement associated with the first moveable element. | 07-07-2011 |
| 20110175477 | Direct Rotation-Inducing Generator - The invention discloses a direct rotation-inducing generator, which comprises an iron core bracket, and a rotating shaft is arranged on the iron core bracket. A first rotary disc and a second rotary disc are respectively arranged on both ends of the rotating shaft. A first iron core is arranged on the iron core bracket and a first coil is arranged on the periphery of the iron core bracket. A first sealing plate is arranged on the first rotating disc, a first magnet is arranged on the first rotary disc or the first sealing plate, and the surface of the first magnet and the first sealing plate share a same surface. A fourth magnet is arranged on the second rotary disc, the first magnet and the fourth magnet correspond with the two ends of the first iron core, and the first magnet faces the fourth magnet by the opposite poles. One end of the first iron core is provided with a liquid storage tank, which is filled with magnetic liquid, and the end filled with magnetic liquid in the first iron core contacts with the first sealing plate. The main magnetic flux of the direct rotation-inducing generator and the magnetic flux generated by induced current are both horizontal with the iron core within the iron core, which significantly reduce the resistance effect on the relative rotation of the iron core and the magnets, thus saving the energy for power generation. | 07-21-2011 |
| 20110210633 | Multi-Phase Rotating Motor - A multi-phase rotating motor causes interpolar mutually-coupled magnetic potential gradient of a field magnet member and an armature member to be prearranged by providing desired shape of pole face for two magnetic pole faces of magnetic assemblies of the field magnet member and the pole faces of the paired poles of electromagnetic assemblies of the armature member, thus controlling detent torque to be varied as desired; and multi-phase arrangement is utilized to further balance the unwanted detent torque in order to guarantee that magnetic flux centralization as well as minimization for magnetic flux loss and of interference effect in motor characteristics are hardly influenced. In addition, with the help of two or more than two magnetic tracks, more parallel air gaps are added in three-dimensional space of the motor to cause the motor, by means of the difference between the magnetic track to which the electromagnetic assemblies of the each-phase unit are corresponding and the magnetic track to which the electromagnetic assemblies of other phase units, to obtain the benefit that higher torque output is provided or more serially-connected and independently-moving individuals are simultaneously arranged, on condition of limited movement direction space. | 09-01-2011 |
| 20110241465 | LOW PROFILE STARTER-GENERATOR - A power system for a vehicle may comprise an electric machine interposed between an engine and a transmission of the vehicle. The electric machine may comprise an exciter generator with exciter armature windings surrounding an axis, a main generator with main field windings surrounding the axis so that the exciter generator and the main generator are concentric and a rotor coaxial with the axis and the rotor supporting the exciter armature windings and the main field windings. The rotor may have a first end attached to the engine power output shaft and a second end adapted to deliver mechanical power from the engine to the transmission. | 10-06-2011 |
| 20110248589 | CIRCULAR TRANSFORMER-GENERATOR - The Circular transformer-generator is a rotational electrical machine that joins creation of sinusoidal voltage and current with the transformation phenomenon or mutual inductivity of the individually wound stator coils. The Circular transformer-generator consists of the stator part that has a number of the inner pole extensions, and a number of the outer pole extensions with spaces between them for the individual stator windings, and of the double rotor assembly that contains the inner body and the outer body with the magnetic or electromagnetic poles that during rotor rotation supply induction to the stator assembly or the individual axially wound stator coils. The axially wound coils of the stator are connected to the Circular transformer-generator output, and at the same time are tied (act upon each other) by their mutual induction, during which time also the transformation coil ratio can be utilized. Resistance against delivered torque of the Circular transformer-generator is much smaller than that of conventional synchronous rotational electric machines. | 10-13-2011 |
| 20110291511 | AXIAL FLUX MOTOR AND GENERATOR ASSEMBLIES - An axial flux motor assembly ( | 12-01-2011 |
| 20120038234 | COMPACT HIGH POWER ALTERNATOR - An apparatus for converting between mechanical and electrical energy, particularly suited for use as a compact high power alternator for automotive use and “remove and replace” retrofitting of existing vehicles. Various aspects of the invention provide a means of significantly increasing the output of permanent magnet alternators while addressing the issues of radial loading applied to a permanent magnet alternator rotor. Another aspect of the invention allows for the production of power in two discrete voltages. An aspect of this invention allows for a marked increase in output capability without increasing axial length through the use of magnetic fringing. One aspect of the invention offers an effective means of mounting a skewed stack that eliminates or reduces cogging that is present in a permanent magnet machine without negatively impacting airflow. Another aspect of the invention reduces cogging by radially offsetting opposing magnets of a dual rotor permanent magnet machine. | 02-16-2012 |
| 20120098375 | MAGNETIC ROTOR ASSEMBLY - A device for inducing the rotation of a plurality of rotors by use of magnetically charged materials includes at least a pair of rotors rotatably mounted. Each rotor includes at least one outwardly extending element having magnetic material attached to the opposing ends of the element. The elements of the two rotors are positioned co-planarly with respect to one another, such that each element of one rotor is paired with a corresponding co-planarly positioned element of the other rotor. The elements are positioned sufficiently proximate to one another such that the polarity of one element's end may interact with the polarity of its paired element of the other rotor to induce a rotation of one or both of the two rotors. | 04-26-2012 |
| 20120146442 | ELECTRICAL MACHINES - Embodiments provide an electrical machine bearing first and second pluralities of permanent magnets having different number of pole pairs, a plurality of pole-pieces that enable the magnetic interaction between the pluralities of permanent magnets, and winding that couples with the first/fundamental harmonic of the first plurality of permanent magnets to enable electromechanical energy conversion. | 06-14-2012 |
| 20120153757 | POLYPHASIC MULTI-COIL ELECTRIC DEVICE - A polyphasic multi-coil generator includes a driveshaft, at least first and second rotors rigidly mounted on the driveshaft so as to simultaneously synchronously rotate with rotation of the driveshaft, and at least one stator sandwiched between the first and second rotors. The stator has an aperture through which the driveshaft is rotatably journalled. A stator array on the stator has an equally circumferentially spaced-apart array of electrically conductive coils mounted to the stator in a first angular orientation about the driveshaft. The rotors and the stator lie in substantially parallel planes. The first and second rotors have, respectively, first and second rotor arrays. | 06-21-2012 |
| 20120169169 | KINETIC ENERGY SUPPLEMENTARY DEVICE - A kinetic energy supplementary device includes an annular magnetizer set formed by permanent magnet and magnetizer. Moreover, the annular magnetizer set consists of one immovable first annular track type permanent magnet assembly, the rotatable second annular track type permanent magnet assembly and the rotatable in reversed directions annular track type magnetizer assembly. The first annular track type permanent magnet assembly and the second annular track type permanent magnet assembly are respectively concentrically arranged outside and inside of annular track type magnetizer assembly for causing an one-way magnetic force. | 07-05-2012 |
| 20120206003 | BRUSHLESS DIRECT CURRENT (DC) ELECTRIC GENERATOR WITH DECREASED ELECTROMAGNETIC DRAG - A method and apparatus for reducing drag in an electric generator are disclosed. Armature insert members are distributed along a periphery of a stator insert fit into a stator having induction windings arranged in slots. The armature insert members include permanent magnet rotors having a pair of pole sections with same magnetic polarity. The alignment of the armature insert members is offset in 45 degree increments. The armature insert members are rotated together in a synchronized manner such that the pole sections are sequentially rotated into alignment with the slots providing a moving excitation field. The stator insert and the stator are divided into sectors from a common center point. Armature insert members having a first magnetic polarity are inserted into positions around the outer periphery of the stator insert corresponding to first sectors and armature insert members having a second magnetic polarity are inserted into positions around the outer periphery of the stator insert corresponding to second ones of the N sectors, the first ones and the second ones of the N sectors arranged in alternating relation. | 08-16-2012 |
| 20120212094 | MULTISTAGE VARIABLE RELUCTANCE MOTOR/GENERATOR - A compact, rugged, variable reluctance, variable speed, electric motor capable of producing high torque at high electrical energy conversion efficiencies is provided. The present invention provides for a multi-stage motor design having a number of discreet rotor and stator elements on a common shaft. This configuration provided the simplest of magnetic structures and produces a powerful magnetic flux modeling design technique that is used to further optimize the motor design and subsequent control logic. Thermal mapping of the magnetic mass provides for advanced cooling techniques that are used to insure long in-service life in the most extreme of industrial applications. The electric motor inherently provides low vibration thereby greatly reducing noise; low turn to turn voltage potential thereby eliminating costly phase to phase shorting potential; efficient motor operation through the reduction in switching and copper losses in both the machine and its control. | 08-23-2012 |
| 20120274164 | SYNCHRONOUS BRUSHLESS MULTIPOLAR MACHINE HAVING IMMOBILE ARMATURE AND FIELD WINDINGS - A synchronous multipolar brushless machine includes an immobile stator armature and field windings, which are placed concentrically around a shaft and radially inwardly positioned relative to the stator armature, on a power unit carrying disc, so that the field windings and armature windings form a mechanically connected unit which generates an excitation magnetic field, and in which an alternate voltage is generated. The excitation magnetic field is transferred to a rotor via labyrinth shaped first and second air gaps. A multipolar rotating magnetic field is generated around the stator armature while the synchronous machine is operated, thereby magnetizing the rotor. In order to reduce magnetic flux resistance, a ferromagnetic tolerance ring is inserted in each first and second air gap. Alternatively, a ferrofluid is provided in each first and second air gap, which significantly increases the magnetic conductivity. | 11-01-2012 |
| 20120280587 | Motor Topology with Exchangeable Components to Form Different Classes of Motors - Exchangeable stator components are selected and exchangeable rotor components are selected to transform a motor from one motor class to another motor class. A motor class includes a switched reluctance (SR) motor class, a parallel path magnetic technology (PPMT) motor class, or an interior permanent magnet (IPM) motor class. | 11-08-2012 |
| 20120299426 | POWER GENERATING STRUCTURE WITH DUAL ARRAY OF MAGNETIC FIELD - A power generating structure comprises a front magnetic disc, a rear magnetic disc, and a coil disc disposed between the front and the rear magnetic discs. The coil disc is provided with a plurality of coil units radially arranged. Each coil unit includes a plurality of coils each with a specific turn. The front and the rear magnetic discs are respectively provided with a plurality of magnetic elements radially arranged. The coil disc is fixed to a shaft at a center thereof. The shaft extends outwardly from the rear magnetic disc. A plurality of blades can be attached to a periphery of the front or the rear magnetic disc. Therefore, the blades can be driven to rotate the front and the rear magnetic discs to have the coils of coil units continuously induced different voltages by the magnetic elements to supply wind power equipments, electrical cars and so on. | 11-29-2012 |
| 20130015740 | Rotor Assembly for an Electric MachineAANM Chamberlin; Bradley D.AACI PendletonAAST INAACO USAAGP Chamberlin; Bradley D. Pendleton IN USAANM Ramey; James J.AACI FortvilleAAST INAACO USAAGP Ramey; James J. Fortville IN US - Some embodiments of the invention include a rotor assembly for an electric machine, including a rotor hub module. In some embodiments, the rotor hub module can include a body comprising a first and second group of apertures, an output shaft through a generally radially central portion of the body, and a support region along a generally radially outward portion of the body. In some embodiments a plurality of ribs can radially extend from a region of the body adjacent to the output shaft aperture to a region of the body adjacent to the support region. In some embodiments a plurality of rotor laminations can be operatively coupled to a portion of an outer diameter of the support region. | 01-17-2013 |
| 20130015741 | TRANSVERSE SWITCHED RELUCTANCE MOTORAANM KIM; Changsung SeanAACI Gyunggi-doAACO KRAAGP KIM; Changsung Sean Gyunggi-do KRAANM CHOI; Chang HwanAACI Gyunggi-doAACO KRAAGP CHOI; Chang Hwan Gyunggi-do KRAANM BAE; Han KyungAACI Gyunggi-doAACO KRAAGP BAE; Han Kyung Gyunggi-do KRAANM LEE; Guen HongAACI SeoulAACO KRAAGP LEE; Guen Hong Seoul KR - Disclosed herein is a transverse switched reluctance motor including: a rotor including a plurality of rotor disks each having a shaft fixedly coupled to an inner portion thereof, having a plurality of rotor poles fixedly coupled thereto along an outer peripheral surface thereof, and arranged in a direction of a shaft; and a stator assembly including a plurality of stators each facing the plurality of rotor poles, having coils wound therearound, and arranged in a circumferential direction of the plurality of rotor disks so that the plurality of rotor disks are rotatably received therein, wherein magnetic flux paths are formed so that magnetic fluxes move in the direction of the shaft by the plurality of stators and the plurality of rotor poles facing the plurality of stators to circulate the stators. | 01-17-2013 |
| 20130038158 | MOTOR - According to one embodiment, a motor includes at least two base units. The base units are arranged along an axis of rotation of the motor. The base units each includes a rotor unit and an armature unit. The rotor unit is formed cylindrical, rotatable about the axis of rotation, and provided with permanent magnets. The armature unit includes a plurality of tripolar armature cores, and a first annular coil and a second annular coil coaxial with respect to the axis of rotation. In each of the at least two base units, the first annular coil is provided in a first annular space, the second annular coil is provided in a second annular space, and opposite currents are applied to the first and second annular coils. | 02-14-2013 |
| 20130057099 | Three Phase Synchronous Reluctance Motor with Constant Air Gap and Recovery of Inductive Field Energy - A synchronous reluctance motor system is disclosed. The system may generally comprise an input power source that provides alternating phase current and voltage (e.g., AC current). The input power may be further conditioned through a variable voltage conditioner. The system may also include capacitive elements connected in series with the motor windings. | 03-07-2013 |
| 20130057100 | ELECTRIC ROTARY MACHINE - An electric rotary machine has a stator, a second rotor, and a first rotor which are arranged in order on a coaxial shaft. The first rotor has a plurality of magnetic poles having a different polarity. The stator has stator winding wires. The second rotor has a magnetic iron core and short circuit conductors. The magnetic iron core has first magnetic passage parts, second magnetic passage parts, and conductor holder parts. Both ends of the short circuit conductor is electrically connected to make a short circuit. The short circuit conductors are fitted to the corresponding conductor holder parts. No short circuit conductor surrounds each of the first magnetic passage parts. The short circuit conductors surround each of the second magnetic passage parts. The first magnetic passage parts and the second magnetic passage parts are alternately arranged along a circumferential direction of the second rotor. | 03-07-2013 |
| 20130082558 | ELECTRIC MOTOR - A rotor placed inside or outside of a stator in the radius direction includes a fixed rotor fixed in a position along a rotation axis of the rotor, and a movable rotor allowed to approach/separate from the fixed rotor and to move in a direction along the rotation axis. | 04-04-2013 |
| 20130093275 | DOUBLE-STATOR/DOUBLE-ROTOR TYPE MOTOR AND DIRECT DRIVE APPARATUS FOR WASHER USING SAME - Provided are a double-stator/double-rotor type motor, in which a double rotor is disposed between an inner stator and an outer stator so as to face the inner stator and the outer stator and form a magnetic circuit with a shortened magnetic path with respect to each of the inner stator and the outer stator, to thereby promote efficiency of the motor, and in which magnets are mounted on inner and outer circumferential surfaces of a back yoke, and a direct drive apparatus for a washing machine using the double-stator/double-rotor type motor. The double-stator/double-rotor type motor includes: a rotor including a first permanent magnet mounted on an inner circumferential surface of a back yoke and a second permanent magnet mounted on an outer circumferential surface of the back yoke; an inner stator that faces the first permanent magnet with a first air gap, to generate a first magnetic field that rotates the rotor; and an outer stator that faces the second permanent magnet with a second air gap, to generate a second magnetic field that rotates the rotor. | 04-18-2013 |
| 20130093276 | DOUBLE-STATOR/DOUBLE-ROTOR TYPE MOTOR AND DIRECT DRIVE APPARATUS FOR WASHER USING SAME - Provided are a double-stator/double-rotor type motor, and a direct drive apparatus for a washing machine using the double-stator/double-rotor type motor, in which a nonmagnetic material is provided between inner and outer stators so as to form dual magnetic circuits that are respectively separated for an inner rotor and an outer rotor, and a double stator is disposed between an inner rotor and an outer rotor so as to separably form a magnetic circuit with a shortened magnetic. | 04-18-2013 |
| 20130106222 | MOTOR | 05-02-2013 |
| 20130113318 | MOTOR - To provide a motor including: an annular stator including permanent magnets and stator cores that are alternately arranged circumferentially, and coils; an annular outer-rotor being arranged outside the stator, having a rotational axis coincident with a central axis of the stator, and having first salient poles; and an annular inner-rotor being arranged inside the stator, having a rotational axis coincident with the central axis to rotate in conjunction with the outer-rotor, and having second salient poles equal in number to the first salient poles, the magnets are magnetized circumferentially and extend radially, and each have respective ends that are opened toward the outer-rotor and toward inner-rotor in the radial direction, the coils are each wound by concentrated-winding on a tooth constituted from a different one magnet and respective parts of two stator cores adjacent to the magnet, and the first and second salient poles are arranged at offset positions circumferentially. | 05-09-2013 |
| 20130154423 | AXIAL FLUX ALTERNATOR WITH ONE OR MORE FLUX AUGMENTATION RINGS - An axial flux alternator may comprise one or more rotors comprising magnets, one or more stators comprising coils, one or more flux augmentation rings comprising a ferrous material, wherein the magnets, coils, and at least a portion of the flux augmentation rings are arranged at a substantially similar radial distance from the common axis, and wherein the rotors are rotatable about the common axis. Another axial flux alternator may comprise one or more flux augmentation rings, magnets configured to travel along a predetermined path, and coils disposed between the flux augmentation ring and the predetermined path, wherein the flux augmentation ring is configured to draw a magnetic flux field from the magnets that crosses the conductive coils thereby creating a voltage potential therein. An axial flux alternator system may comprise one or more rotors, flux augmentation rings, and stators, an input source, and an output load. | 06-20-2013 |
| 20130175894 | DISK TYPE MAGNETIC GENERATOR - A disk type magnetic generator is a core-free magnetic generator including a shaft connected, in series, to a first rotor, a stator, and a second rotor or a core-included magnetic generator including a rotor and a stator connected in series. The rotor has a surface that is positioned against a stator plate and includes a number of flat-plate magnets arranged in a single circle and each forming an inclination angle with respect to a radius of rotor plate. The rotor plate alternatively includes multiple groups of magnets rotatably mounted on the same plate and arranged in concentric circles. The rotor alternatively includes multiple groups of magnets rotatably mounted in a diameter expansion direction and arranged in concentric circles. Alternatively, a combined assembly of a rotor and a stator that are connected in series by a driven shaft is provided with a rotatably connected weight ring in a diameter expansion direction. | 07-11-2013 |
| 20130181562 | DUAL-ROTOR MACHINE - A dual rotor machine having a stator includes at least one excitation element, a first rotor located between the at least one excitation element and an axis, the first rotor configured to rotate about the axis, and a second rotor on the other side of the at least one excitation element from the axis, the second rotor configured to rotate about the axis. | 07-18-2013 |
| 20130181563 | Electric Motor - An electric motor, comprising motor first and second sections, said motor first and second sections including each a rotor and a stator rotatable relative to each other, said stators including each a plurality of coils disposed in a substantially annular configuration therearound, said rotors including each a plurality of permanent magnets disposed in a substantially annular configuration therearound; said rotors being substantially coaxial and facing each other, said rotors being rotatable independently from each other; said rotors being magnetically coupled to each other so that a rotation of a first one of said rotors causes a rotation of the other one said rotors. | 07-18-2013 |
| 20130187501 | ELECTRIC MOTOR ASSEMBLY WITH ELECTRIC PHASING OF ROTOR SEGMENTS TO REDUCE BACK ELECTROMOTIVE FORCE - An electric motor assembly includes a stator having a first set of electrical windings. The motor assembly includes a rotor assembly rotatable about an axis of rotation and that has a rotor with first and second rotor segments. Each of the rotor segments has a respective set of magnets spaced therearound. The motor assembly has a phaser that includes a phaser actuator and a phaser gear mechanism. The phaser gear mechanism has a plurality of members. The phaser actuator and the first and second rotor segments are each operatively connected to a different respective one of the members. The phaser actuator is activatable to change an angular position of the member to which the phaser actuator is operatively connected, moving one of the rotor segments about the axis of rotation relative to the other of the rotor segments to reduce back electromotive force in the first set of stator windings. | 07-25-2013 |
| 20130234553 | MAGNETIC MODULATION MOTOR AND ELECTRIC TRANSMISSION - A magnetic modulation motor includes an armature, a magnetic induction rotor, and a magnet rotor. The armature is provided with a multi-phase winding with m pole pairs. The magnetic induction rotor includes k magnetic paths. In the magnet rotor, 2 | 09-12-2013 |
| 20130270948 | ELECTRIC MOTOR HAVING OPTIMISED STATOR STRUCTURE - The invention relates to an electric motor having a rotor and a hollow-cylindrical stator which carries exciter coils ( | 10-17-2013 |
| 20130278102 | MAGNETIC ROTOR ARRANGEMENT - A magnetic rotor arrangement is provided, having a primary rotor comprising an array of magnets arranged to provide alternating polarity around the outside of the primary rotor and at least one auxiliary rotor comprising an array of magnets arranged to provide alternating polarity around the outside of the auxiliary rotor. The primary rotor and each auxiliary rotor are arranged such that when the primary rotor is rotated, the rotation of the primary rotor magnetically induces rotation of each auxiliary rotor. | 10-24-2013 |
| 20130328429 | Motor Unit, and Dynamo-Electric Machine and Dynamo-Electric Machine Device that Use Same - Provided are: a low cost, high-performance motor unit which has a large capacity obtained without increasing the radial size of the axial gap motor and which can be assembled with improved efficiency; and a dynamo-electric machine and a dynamo-electric machine device which use the motor unit. A motor unit comprises: an in-unit shaft; a stator provided along the circumferential direction of the in-unit shaft; two rotors rotating together with the in-unit shaft and provided so as to face both surfaces of the stator in the circumferential direction; and engagement sections provided to the surface of each of the rotors which is on the side opposite the stator. Such motor units are engaged with each other at the engagement sections and rotate integrally. | 12-12-2013 |
| 20140009022 | AMORPHOUS DIVIDED-CORE STATOR AND AXIAL-GAP-TYPE MOTOR USING SAME - Provided are an amorphous split core stator, which maximizes an opposing area between a plurality of split cores and magnets, increases a fill factor of coils, and which is molded by using amorphous metallic powder to thereby minimize an eddy current loss (or a core loss), and an axial gap type motor using the same. The axial gap type amorphous split core motor includes: a rotating shaft whose both ends are rotatably supported; first and second annular yokes the center of each of which is combined with the rotating shaft and that are placed at an interval therebetween; first and second rotors having a plurality of magnets that are mounted on the inner surfaces of the first and second yokes with polarities opposite to each other; and a stator having a plurality of split cores that are placed between the first and second rotors and on each of which a coil is wound, in which the split cores are molded by using amorphous metallic powder. | 01-09-2014 |
| 20140028137 | POWER GENERATOR - The present invention provides a power generator which can obtain efficient power generation by changing magnetic force acting on electromotive coils. | 01-30-2014 |
| 20140042851 | MOTOR AND METHOD FOR MANUFACTURING STATOR CORE AND ROTOR CORE OF MOTOR - A motor includes a first, second, and third motor unit. First, second and third rotors each including a first and second rotor core and a field magnet. The first and second rotor cores include respectively first and second rotor core bases and a plurality of first and second claw magnetic poles that are arranged alternately along a circumferential direction of the motor. The field magnet causes the plurality of first claw magnetic poles and the plurality of second claw magnetic poles to function as different magnetic poles. Each of first and second stators including pluralities of first claw magnetic poles and second claw magnetic poles alternately arranged along the circumferential direction of the motor. The second stator core having a coil section. | 02-13-2014 |
| 20140070651 | Brushless, ironless stator, single coil motor without laminations - An iron less stator, brushless, single coil motor without laminations uses permanent magnetic field lines co-acting with magnetic field lines from current carrying packets of wires to both start and run the motor. | 03-13-2014 |
| 20140091661 | POLYPHASIC MULTI-COIL ELECTRIC DEVICE - A polyphasic multi-coil generator includes a drive shaft, at least first and second rotors rigidly mounted on the drive shaft so as to simultaneously synchronously rotate with rotation of the drive shaft, and at least one stator sandwiched between the first and second rotors. A stator array on the stator has an array of electrically conductive coils mounted to the stator in a first angular orientation about the drive shaft. The rotors each have an array of magnets which are circumferentially equally spaced around the rotor and located at the same radially spacing with respect to the centre of the rotor and the drive shaft at a first angular orientation relative to the drive shaft. The arrays of magnets on adjacent rotors are off-set by an angular offset relative to one another. | 04-03-2014 |
| 20140091662 | DRIVING APPARATUS FOR DIRECT-DRIVE TYPE WASHING MACHINE - A driving apparatus for a direct-drive type washing machine includes a support member that is fixed to the lower side of a washing tub; a dehydrating tub rotating shaft that is rotatably supported on the support member and that is connected to a dehydrating tub to rotate the dehydrating tub; a pulsator rotating shaft that is rotatably arranged in the inside of the dehydrating tub rotating shaft and that is connected to a pulsator to rotate the pulsator; a drive motor comprising a double rotor including an outer rotor that is connected to the pulsator rotating shaft and an inner rotor that is connected to the dehydrating tub rotating shaft, and a double stator including a first stator coil for rotating the outer rotor and a second stator coil for rotating the inner rotor; and a motor drive unit that generates alternating-current (AC) power according to a washing control signal. | 04-03-2014 |
| 20140132100 | POWER GENERATING DEVICE - To provide a power generating device having a low rotational resistance to a power generation amount and having high conversion efficiency. [Solution] The power generating device ( | 05-15-2014 |
| 20140203679 | FLUX MACHINE - A flux machine includes a stator and a rotor. A set of electrical coil assemblies with side surfaces and sets of plural permanent magnets are arranged circularly on the stator and the rotor. Pole faces of the magnets are positioned adjacent to and spaced apart from side surfaces of permeable cores of the coil assemblies. In each coil assembly a pair of like pole faces of the magnets mutually face across the permeable core and a third magnet pole face faces transversely relative to the mutually facing pole faces of the pair of magnets. | 07-24-2014 |
| 20140292131 | Dual Rotor Switched Reluctance Machine - A dual rotor switched reluctance machine with a fixed stator and separate input and output rotors on either side of the fixed stator is used to transmit power between a power source such as an gas engine and a mechanical drive unit such as wheels or tracks. A switched reluctance motor configuration, such as a 6/4 motor can be combined with a with a higher pole count switched reluctance generator to allow simultaneous operation of the dual rotor machine as both a generator and a motor. Because the fixed stator has the only set of windings the control electronics are greatly simplified over separate motor-generator configurations. | 10-02-2014 |
| 20140306567 | TANDEM ROTOR SERVO MOTOR - A tandem rotor servo motor assembly is provided comprising a first phase element positioned on a shaft, the first phase element having a first rotor in communication with the shaft and surrounded by a stator carrying four magnetic poles, each of said poles exerting a magnetic force when said poles are electrically charged. A second phase element is positioned on the shaft a first distance from the first phase element, the second phase element having a second rotor in communication with the shaft and surrounded by a stator carrying four magnetic poles, each of said poles exerting a magnetic force when said poles are electrically charged. A third phase element is positioned on the shaft a second distance from the second phase element, the third phase element having a third rotor in communication with the shaft and surrounded by a stator carrying four magnetic poles, each of said poles exerting a magnetic force when said poles are electrically charged. The second rotor is offset about the shaft from the first rotor by sixty degrees of rotation and the third rotor being offset about the shaft from the first rotor by one hundred and twenty degrees of rotation. | 10-16-2014 |
| 20150091403 | TRANSVERSE FLUX MACHINE AND VEHICLE - A transverse flux machine includes a stator having a circular coil wound in a rotational direction, a plurality of first ferromagnets arranged in the rotational direction, each of the first ferromagnets surrounding a part of the circular coil; and a rotor arranged to face the first ferromagnets across a gap, the rotor being rotatable about a center axis of the circular coil; wherein the rotor includes a plurality of second ferromagnets arranged in the rotational direction; and a flux-generation part arranged between adjacent ones of the second ferromagnets, each of the second ferromagnets to generate a magnetic field in the rotational direction. | 04-02-2015 |
| 20150357891 | ROTATING ELECTRIC MACHINE SYSTEM AND METHOD FOR CONTROLLING INDUCED VOLTAGE FOR THE SAME - In the rotating electric machine system, a rotor facing an armature is composed of three rotors having magnetic salient poles of the same number, rotors at both ends are magnet excited configuration, rotors at both ends are displaced relatively in mutually opposite circumferential direction to a middle rotor, and rotational force is optimally controlled. The middle rotor can adopt the rotor structure to have a reluctance torque, a magnet torque, and both. The rotating electric machine system that can adopt an optimum magnetic pole structure by a rotor unit, and has a wide range of the rotational speed is provided. | 12-10-2015 |
| 20160043600 | ELECTROMAGNETIC SYSTEM WITH MAGNETICALLY COUPLED ROTORS - A magnetic rotor arrangement is provided, having a primary rotor including an array of magnets arranged to provide alternating polarity around the outside of the primary rotor and at least one auxiliary rotor including an array of magnets arranged to provide alternating polarity around the outside of the auxiliary rotor. The primary rotor and each auxiliary rotor are arranged such that when the primary rotor is rotated, the rotation of the primary rotor magnetically induces rotation of each auxiliary rotor. | 02-11-2016 |
| 20160087496 | INDIVIDUAL-SEGMENT ROTOR HAVING RETAINING RINGS - The aim is to propose an individual-segment rotor that is simple to construct and suitable for series production. Therefore, an individual-segment rotor having a plurality of laminated core segments ( | 03-24-2016 |
| 20160087514 | ROTATING ELECTRICAL MACHINE COMPRISING AT LEAST ONE STATOR AND AT LEAST TWO ROTORS - The present invention relates to a rotating electrical machine including at least one stator and at least two rotors, which are arranged on either side of the stator along an axis of rotation of the machine,
| 03-24-2016 |
| 20160099621 | Lamination Clamping Structure - A generator rotor system having various features is disclosed. The generator rotor system has at least one main generator rotor with winding-pole sets spaced annularly about the rotor. The tendency of the rotor laminations of the poles to distort and or displace under the centrifugal force of the spinning rotor is ameliorated by a lamination clamping structure disposed axially outboard of the winding-pole sets. | 04-07-2016 |
