Class / Patent application number | Description | Number of patent applications / Date published |
310203000 | Closed windings | 55 |
20080315707 | WIND POWER INSTALLATION WITH RING GENERATOR HAVING A STATOR WITH GROOVES TO RECEIVE A STATOR WINDING - A synchronous machine has a stator in which grooves are provided at the inner or outer periphery in mutually spaced relationship to receive a stator winding. The synchronous machine may be in the form of a ring generator used in a wind power installation, for example. In order to provide a stator having a winding, in which the susceptibility to trouble as a consequence of the high loading on the generator is substantially reduced, the stator winding is wound without interruption continuously throughout. | 12-25-2008 |
20090001840 | Electrical Machine, In Particular an Alternator - The invention relates to an electrical machine, especially an alternator ( | 01-01-2009 |
20090009024 | ELECTROMAGNETIC ENERGY DEVICE AND METHOD - An apparatus and method are shown for improving the efficiency of motors, generators and machines by using a closed ferromagnetic frame upon which is mounted a plurality of solenoid coils. Two of the solenoid coils are wired together so that they act as one in a closed wiring circuit. An associated armature assembly includes a carousel which carries additional solenoid coils and is rotated through an opening provided in an extension to the closed frame. The individual solenoid coils located on the carousel supply power to the two original solenoid coils on the ferromagnetic frame giving the basic circulation system amplification each time a solenoid enters the electric/magnetic field created by the frame uprights. | 01-08-2009 |
20090015092 | METHOD FOR WINDING THE STATOR OF AN ELECTRIC MOTOR, AND STATOR FOR AN ELECTRIC MOTOR - In a method for winding the stator of a multiphase electric motor a plurality of mutually spaced stator teeth are assigned to each phase, wherein all the teeth of the stator are wound without a break in the winding wire, and wherein the winding wire is taken via a contact-making element of a contact-making device before or after the winding of all the stator teeth assigned to a phase. | 01-15-2009 |
20090021099 | Pulsed Inertial Electric Motor - A pulsed inertial electric motor of the present invention comprises (i) a stator with an annular magnetic conductor on which an even number of permanent magnets are uniformly arranged with a predetermined pitch, (ii) a rotor separated from the stator by an air gap and bearing an even number of electromagnets, each electromagnet consisting of first and second coils with mutually opposed winding directions, the coils being connected in series, (iii) a collector distributor (commutator) mounted on the stator body, containing current-conducting plates separated by insulating spacers and connected with alternating polarity to a direct current (DC) source, and (iv) current collectors mounted on the rotor and capable of contacting with plates of the collector distributor | 01-22-2009 |
20090058214 | PLANETARY GEARED MOTOR AND DYNAMO - Provided is a DC motor capable of eliminating a DC current reverse rectification performed in a conventional DC motor and enabling rotation of maximum torque at all rotation angle and having a shape and a function for facilitating a combination with a speed change gear mechanism. Also provided is a planetary gear dynamo using the shape and the function of the present invention and capable of reducing inverse torque when the function is used as a generator. | 03-05-2009 |
20090121575 | GENERATOR, IN PARTICULAR FOR MOTOR VEHICLES - The invention relates to a generator, especially for motor vehicles, which comprises a generator stator ( | 05-14-2009 |
20090134736 | Armature of Rotary Motor, Rotary Motor and Manufacturing Method Thereof - Stable electrical connections between coils and a commutator are realized without causing slackening of the coils wound on individual magnetic teeth. An armature of a rotary motor includes an armature core structured splittably into magnetic tooth members which are individually wound by concentrated-winding type coils, and a commutator having the same number of segments as the number of the magnetic tooth members, the individual segments having connecting terminals, wherein an end portion of the coil concentratedly wound on one of the magnetic tooth members is connected generally in a straight line to the connecting terminal of the segment which is located at a position offset in a circumferential direction by a specific angle from the aforementioned one magnetic tooth member, and a conductor line connected to the connecting terminal of the segment is concentratedly wound on another magnetic tooth member adjacent to the aforementioned one magnetic tooth member. | 05-28-2009 |
20100187941 | 18/8 SYNCHRONOUS MOTOR - The invention relates to a synchronous motor ( | 07-29-2010 |
20120062064 | ELECTRIC ROTATING MACHINE - An electric rotating machine includes a multi-phase stator coil that is wound on a stator core in a distributed winding manner. Each of phase windings of the stator coil is formed of an electric wire bundle which includes a plurality of insulation-coated electric wires that are electrically connected to one another. Each of the electric wire bundles forming the phase windings has in-slot portions, which are respectively received in corresponding slots of the stator core, and turn portions that are located outside the slots of the stator core to connect adjacent pairs of the in-slot portions. Each of the electric wire bundles further includes a plurality of insulating layers that are respectively formed at predetermined positions, at which the turn portions of the electric wire bundle overlap those of the other electric wire bundles, so as to surround the electric wires of the electric wire bundle. | 03-15-2012 |
20120086297 | MOTOR - A multipolar motor is simply wire-wound and an output thereof is capable of being switched. The motor includes at least 8 magnetic poles, an armature including at least 10 tooth sections; a commutator including at least 20 commutator segments, and brush-sets including 2 positive electrode brushes and 2 negative electrode brushes. A hook-holding section arranged to hook-hold conductor wires is installed on each of the commutator segments. Further, a group of coils is defined by using a single conductor wire that is wound onto each of the plurality of tooth sections and hooked onto the plurality of hook holding sections. This motor can switch the state in which the brush-set is energized. | 04-12-2012 |
20130221792 | ARMATURE WINDING OF ROTATING ELECTRICAL MACHINE - According to one embodiment, there is provided a 3-phase 4-pole 2-layer armature winding of a rotating electrical machine. A winding of each phase of the armature winding forms a series coil. Each series coil includes upper coil pieces and lower coil pieces which are connected each other at a connection side coil end and a counter-connection side coil end, the upper coil pieces and lower coil pieces being placed in 42 slots provided in an armature core. At least one coil piece of the upper and lower coil pieces, provided in at least one of an innermost position and an outermost position from the center of a phase belt of each phase, is replaced with a coil piece of an adjacent phase. | 08-29-2013 |
20140145542 | Electric Actuator - In an electrical actuator having a motor in which a plurality of teeth including a continuous winding are formed into a stator core of a ring shape, one wire being continuously wound around the teeth adjacent to each other in the continuous winding, the stator core is configured that step sections of an uneven shape in the axial direction are arranged in butting sections between the teeth connected by the continuous winding, and the uneven shapes are fitted to each other. | 05-29-2014 |
20140210299 | ROTOR WINDINGS FOR DC MOTOR - A commutated DC motor ( | 07-31-2014 |
20150333587 | ARMATURE WINDING OF ROTATING ELECTRICAL MACHINE - According to one embodiment, there is provided a 3-phase 2-pole 2-layer armature winding, housed in 72 slots provided in a laminated iron core, a winding of each phase including six parallel circuits separated into two phase belts. Upper coil pieces of first and fourth parallel circuits are placed at 3rd, 4th, 7th, and 12th positions, and lower coil pieces of the first and fourth parallel circuits are placed at 1st, 6th, 9th, and 10th positions, upper and lower coil pieces of second and fifth parallel circuits are placed at 2nd, 5th, 8th, and 11th positions, and upper coil pieces of third and six parallel circuits are placed at 1st, 6th, 9th, and 10th positions, and lower coil pieces of the third and six parallel circuits are placed at 3rd, 4th, 7th, and 12th positions, from the center of a pole. | 11-19-2015 |
20160181880 | ROTATING ARMATURE, ROTATING ELECTRIC MACHINE, AND ROTATING ARMATURE MANUFACTURING METHOD | 06-23-2016 |
310204000 | Equalizers | 5 |
20100156232 | Brushless AC motor - An AC motor having loop windings is provided, which is able to reduce unbalance of three-phase impedance to enhance the motor efficiency. Three loop windings of the three phases are interlinked with magnetic fluxes Φu, Φv and Φw of the respective phases to provide magnetic paths of the three phases. The magnetic paths of the three phases are connected to the respective stator poles of the three phases to configure the motor. The magnetic path of each of the three phases is formed by processing an electromagnetic steel plate using bending to provide a motor configuration having multiple stator poles. Magnetic fluxes of two or more stator poles of the same phase are collected to a single magnetic path to form a three-dimensional three-phase magnetic path without allowing close contact with a magnetic path of a different phase. | 06-24-2010 |
20120235533 | ROTATING ELECTRICAL MACHINE AND MANUFACTURING METHOD OF THE SAME - A rotating electrical machine having a shaft, an iron core having slots, an armature winding inserted into the slots, a commutator provided to the shaft and having a plurality of commutator segments that should have same potential. An equalizer connected at one end to a commutator segment among the commutator segments where the commutator segment is in contact with a brush reaches a rear side of the iron core by passing through a slot positioned at a center of a magnetic pole of the rotating electrical machine and returns to the front side by passing through another slot positioned at a center of another magnetic pole so that the equalizer is connected at the other end to a commutator segment where the commutator segment is in contact with a brush of a same polarity as the firstly-mentioned brush. | 09-20-2012 |
20130009510 | ELECTRIC MOTOR - An electric motor includes a stator, a rotor, and multiple brushes. The stator forms multiple poles. The number of brushes is less than the number of stator poles. The rotor includes a commutator, windings, and equalizing units. The commutator includes segments electrically connected with the windings. Each of the equalizing units is electrically connected with multiple equipotential segments to make the equipotential segments have the same potential. Multiple parallel circuits are formed between the equipotential segments by the equalizing unit. The brushes are arranged to slidably contact the segments of the commutator. | 01-10-2013 |
20160190889 | Brushed Direct Current Motor - A brushed DC motor has a stator and a rotor. The stator has 2P magnetic poles, where P is an integer greater than 1. The rotor has a shaft, a rotor core, a commutator and a winding. The rotor core has m×P teeth, where m is an integer greater than 2. The winding includes several coil windings wound on the teeth and electrically connected to segments of the commutator. The commutator has 2m×P segments, where the 2m×P segments are divided into 2m groups, each group has P segments, the P segments are connected by an equalizer. The equalizer for at least one group of the 2m groups of segments and all the coil windings are formed by a single winding wire, wound continuously. | 06-30-2016 |
20160190890 | Brushed Direct Current Motor - A brushed DC motor has a stator and a rotor. The stator has 2P magnetic poles, where P is an integer greater than 1; the rotor includes a shaft, a rotor core, a commutator and a winding. The rotor core has m×P teeth; the commutator has n×P segments, where n is an integral multiple of m, and the winding includes several coil windings wound on the teeth and electrically connected to a respective segment. The segments are divided into n groups, each group having P segments electrically interconnected by an equalizer. An equalizer for at least one group of the n groups of segments and all the coil windings are formed by a single winding wire, continuously wound. | 06-30-2016 |
310206000 | Lap | 7 |
20090160286 | FOLDED LAP WINDING FOR A STATOR - The invention relates to a method for producing a stator winding ( | 06-25-2009 |
20100060098 | METHOD FOR MANUFACTURING A WINDING FOR A STATOR OF AN ELECTRIC MACHINE - In a stator for an electric machine and a method for manufacturing a winding for the stator of such an electric machine L-shaped wire segments having a rectangular cross-section are inserted into slots arranged around the stator The long leg of the L-shaped wire segment is then inserted, into or through, a respective slot and the wire segment is then bent into an S-shape resulting in a second short leg while reducing a length of the long leg. The first short leg of each one of a majority of the wire segments is then electrically connected to the first short leg of another one of the wire segments and the second short leg of each one of a majority of the wire segments is electrically connected to the second short leg of yet another one of the wire segments. | 03-11-2010 |
20110025164 | ROTATING ELECTRIC MACHINE AND METHOD FOR MANUFACTURING STATOR - A rotating electric machine comprises a stator in which a stator winding is inserted in a plurality of slots extending in an axial direction in an inner circumference of a stator core, and a rotor that is rotatable in the stator. A plurality of the stator windings are constituted with continuously wound coils in which rectangular conductors are connected by cross-over conductors spanning over the plurality of slots, and end positions of the cross-over conductors vary in the circumferential direction of the stator. | 02-03-2011 |
20120007462 | Stator for rotary electric machine and rotary electric machine using same | 01-12-2012 |
20130193797 | ELECTRIC MOTOR - A DC electric motor has a stack of laminations defining a rotor with at least two pairs of poles and an even number of slots at least equal to 8. The rotor also has a commutator with an even number of segments and a closed distributed rotor winding. The winding extends in the slots and is connected in a predetermined manner to the segments of the commutator. The rotor winding has a winding section of the lap type, connected to two consecutive segments of the commutator and, in series with this, a plurality of winding sections of the wave type. These winding sections all span an identical number of slots. | 08-01-2013 |
20140042864 | DC MOTOR - A DC motor has a stator including two magnets arranged in a circumferential direction. An armature includes an armature core having eight slots arranged in a circumferential direction and radially facing the magnets. A commutator rotates integrally with the armature core and includes four segments separated in the circumferential direction by four grooves arranged in the circumferential direction. Coils are wound in a distributed winding in the slots. Two brushes contact the segments. Two coils, which are arranged at an interval of electric angle 180° and connected in series to each other, are connected to two of the segments that are electrically short circuited by each of the brushes so that the two coils extend between the segments. Each groove is located at a position deviated from a position separated by electric angle 180° in the circumferential direction from another one of the grooves. | 02-13-2014 |
20140265712 | Electric Motor - An electric motor has a rotatable armature having two pairs of poles, including a lamination stack which has a shape which is symmetrical about its axis and which forms twenty radial teeth and twenty slots and which has, associated therewith, a commutator with twenty segments, and a distributed closed winding, the conductors of which extend into the slots and are connected to the segments of the commutator in a predetermined manner. The winding of the armature has a lap-type winding or coil section connected to two adjacent segments of the commutator and, in series therewith, a plurality of wave-type winding sections or coils. All of these sections or coils encompass a same number of slots. | 09-18-2014 |
310207000 | Wave | 27 |
20080258575 | METHOD AND APPARATUS FOR PRODUCING A COIL WINDING FOR STATORS OR ROTORS OF ELECTRICAL MACHINES, AND STATOR OR ROTOR PRODUCED THEREBY - A method for producing a coil winding for stators is described, in which each coil turn rests, with one fillet ( | 10-23-2008 |
20090001841 | Rotation electric machine having a wave winding coil with cranked crossover conductor, distributed winding stator, and method and apparatus for forming same - The invention provides a distributed winding stator using a rectangle conductor as coil, realizing a miniaturized coil end and reduced current density compared to the prior art stator, so as to obtain a miniaturized rotation electric machine with high power. The distributed winding stator is formed by wave winding a conductor source wire having a rectangular cross-section, wherein the wire is cranked so that parietal regions on both ends are displaced corresponding to the width of the source wire and that the length is within the range of intervals between adjacent slots, and inserting the wave winding coil into slots of the stator. | 01-01-2009 |
20090039726 | Electric motor - A winding for an n-phase electric motor is disclosed. The inventive winding comprises a number of consecutive winding groups of n individual windings, wherein at any point in time an individual winding of a first group exhibits one direction of current flow and wherein at the same point in time a corresponding individual winding of an adjacent group exhibits the opposite direction of current flow. There is also disclosed a method for preparing such winding. It is further disclosed a magnetic unit adapted for such winding, comprising permanent magnets being essentially triangular in cross-section. Further, there is disclosed electric motors using the inventive winding concept, as well as geodetic instruments taking advantage thereof. An electric motor according to the disclosed inventive concept is particularly well suited for direct drive. | 02-12-2009 |
20090134737 | STATOR OF ELECTRIC ROTATING MACHINE AND ELECTRIC ROTATING MACHINE - The stator of an electric rotating machine includes a stator core formed with slots, and a stator coil constituted by a plurality of phase windings wave-wound around the stator. Each of the plurality of the phase windings is constituted by a first winding portion and a second winding wound in opposite directions. Each of the first and second winding portions includes in-slot portions accommodated in the slots, turn portions each connecting an adjacent two of the in-slot portions, and a foldback portion defined by one of the in-slot portions at which the first and second winding portions are joined to each other. The in-slot portions of the first and second winding portions are accommodated together in every one of a predetermined number of the slots adjacent in the circumferential direction such that the first and second winding portions alternate in a depth direction of the slots along the circumferential direction. | 05-28-2009 |
20090261683 | STATOR OR ROTOR FOR ELECTRICAL MACHINES, AND METHOD FOR ITS PRODUCTION - The method serves to produce a stator or rotor having a distributed wave winding, in which the wires ( | 10-22-2009 |
20090261684 | STATOR OF ELECTRIC ROTATING MACHINE - The stator of an electric rotating machine includes a stator core having slots formed at an inner periphery thereof, and a stator winding constituted by conductive wires wound on the slots. The stator winding including in-slot portions accommodated in the slots and turn portions each connecting each adjacent two of the in-slot portions at outside of the slots. The stator core including a core member having at least three tooth portions extending in a radial direction of the stator core and a core back portion integrally connecting the tooth portions at a radially end side thereof. The core member is configured such that each of the first tooth portions folded toward the core back portion is capable of unfolding to extend between a corresponding adjacent two of the in-slot portions when the core member is at a predetermined axial position with respect to the stator winding. | 10-22-2009 |
20090261685 | SEGMENT-CORE TYPE STATOR FOR INNER-ROTOR TYPE ROTARY ELECTRIC MACHINES AND AN IMPROVED METHOD FOR MANUFACTURING THE STATOR - When accommodating a cage stator coil in a stator core made up of distributed cores, an end side distributed core composing end side core at an end side in axial direction is made larger than a central side distributed core composing central side core. The cage stator coil is formed by compressing a central portion of an original cage stator coil. The end side segment core composing the end core is set at a central portion in an axial direction of the cage stator coil then the end side coil is moved to an end portion in the axial direction. The central side segment core composing the central core is set at the central portion in the axial direction of the cage stator coil thereafter. | 10-22-2009 |
20090261686 | STATOR OF ELECTRIC ROTATING MACHINE AND ELECTRIC ROTATING MACHINE - The stator of an electric rotating machine includes a stator core having slots formed therein along a circumferential direction thereof, and a stator winding formed by conductive wires wound on the slots. The stator winding includes in-slot portions accommodated in the slots and turn portions each of which connects each adjacent two of the in-slot portions outside of the slots. Each of the turn portions includes a first turn portion formed with m1 steps (m1 being a positive integer) extending along axial ends of the stator core, and a second turn portion formed with m2 steps (m2 being an integer larger than ml) extending along the axial ends. | 10-22-2009 |
20100033052 | ELECTRIC MACHINE WITH A MULTI-LEVEL WINDING - Stator winding ( | 02-11-2010 |
20100117480 | STATOR FOR DYNAMOELECTRIC MACHINE AND METHOD OF MANUFACTURING SAME - A stator for a dynamoelectric machine includes a stator core and a stator coil. The stator coil is made up of wave-shaped electric wires mounted on the stator core. Each of the electric wires has in-slot portions, each of which is received in one of slots of the stator core, and connecting portions each of which is located outside of the slots to connect one adjacent pair of the in-slot portions. Each of the connecting portions includes an apex part that is located axially furthest in the connecting portion from the stator core and includes an oblique section extending obliquely with respect to the radial direction of the stator core. Further, the oblique sections of the electric wires on one side of the stator core in the axial direction of the stator core are oblique in the same direction as those on the other side of the stator core. | 05-13-2010 |
20100231083 | COIL MANUFACTURING METHOD AND COIL MANUFACTURING APPARATUS - A coil manufacturing method for manufacturing a wave wound coil in a substantially cylindrical shape by shaping a linear conductor with a cross-sectional shape having directionality, including: transferring a linear waver conductor shaped in a substantially rectangular waveform, and having straight side portions extending in a wave width direction, one-side connecting portions sequentially connecting every other pair of adjacent side portions at ends on a one wave width direction side, and other-side connecting portions sequentially connecting pairs of adjacent side portions that are not connected by the one-side connecting portions at ends on an other wave width direction side; bending a target connecting portion, which is at least one of the one-side connecting portions and the other-side connecting portions of the wave conductor, at one position thereof to shape the target connecting portion into a substantially V shape so that the side portions are arranged along a coil circumferential direction and directions of cross-sectional shapes of the side portions are in a constant direction with respect to a coil radial direction; and winding the bent wave conductor on a bobbin. | 09-16-2010 |
20110012472 | STATOR FOR ELECTRIC ROTATING MACHINE AND METHOD OF MANUFACTURING SAME - A stator includes a stator core and a stator coil comprised of a plurality of electric wires. Each of the electric wires has, at least, first, second, and third in-slot portions and first and second turn portions. The first to third in-slot portions are respectively received in three different slots of the stator core. The first turn portion is located on one axial side of the stator core outside of the slots to connect the first and second in-slot portions. The second turn portion is located on the other axial side of the stator core outside of the slots to connect the second and third in-slot portions. For each of the electric wires, the radial distances of the first to third in-slot portions from the axis of the stator core successively decrease. All of the electric wires are offset from one another in the circumferential direction of the stator core. | 01-20-2011 |
20110018381 | ELECTRIC MOTOR - An electric motor comprising a rotor having plural magnetic poles in the circumferential direction; and a stator whose teeth are disposed opposite to the periphery of the rotor, with an air gap interposed between the rotor and the stator, wherein the coil conductors are wound on the stator so that two stator magnetic poles may be formed by two coil units of a phase wound around stator teeth within the range of 360 electrical degrees subtended by the magnetic poles of the rotor; each of the two coil units forming the stator magnetic poles spans an electrical angle less than 180 electrical degrees; the two coil turns forming the two stator magnetic poles are laid out so that they may not overlap each other; and the coil conductors are so wound that the adjacent stator magnetic poles exhibit opposite magnetic polarities. | 01-27-2011 |
20110095639 | STATOR FOR ELECTRIC ROTATING MACHINE AND METHOD OF MANUFACTURING THE SAME - Disclosed is a method of manufacturing a stator for an electric rotating machine. The method includes the steps of: (1) forming a plurality of planar electric wires, each of the planar electric wires including a plurality of in-slot portions to be received in slots of a stator core and a plurality of turn portions to be located outside of the slots to connect the in-slot portions; (2) rolling each of the planar electric wires through plastic deformation into a spiral or circular-arc shape; (3) forming a hollow cylindrical stator coil by assembling the rolled electric wires through operations of making relative axial movement therebetween; and (4) assembling the stator core and the stator coil together to form the stator. | 04-28-2011 |
20110210639 | MOTOR STATOR AND PHASE COIL PREFORM - A stator of a motor includes a stator core having a plurality of teeth forming slots between any two adjacent teeth and a plurality of phase coils provided in the slots, each formed by wave winding and made of a continuous wire. Each phase coil includes a first wave winding bundle and a second wave winding bundle that is passed through a first slot and a second slot. The first slot is located adjacent to one side of a group of slots through which the phase coils other than said each phase coil are passed and the second slot is located adjacent to the other side of the group of slots. The first wave winding bundle is passed through a third slot and a fourth slot. The third slot is located adjacent to the first slot on the opposite side of the first slot from the group of slots and the fourth slot is located adjacent to the second slot on the opposite side of the second slot from the group of slots. | 09-01-2011 |
20110260571 | DYNAMOELECTRIC MACHINE - A U phase winding, an X phase winding, a V phase winding, a Y phase winding, a W phase winding, and a Z phase winding are configured by mounting conductor wires so as to alternate repeatedly between 5π/6 short-pitch windings and 7π/6 long-pitch windings, and are mounted into the stator core in that order so as to be stacked sequentially in a radial direction so as to be offset by one slot each in a first circumferential direction. | 10-27-2011 |
20110260572 | MOTOR STATOR AND MANUFACTURING METHOD OF MOTOR STATOR - A motor stator ( | 10-27-2011 |
20120112595 | STATOR AND CAGE COIL - A cage coil includes a first combined conductor constituted of six first conductors each being formed in a continuous zig-zag pattern, the first conductors being overlapped sequentially with displacement, and a second combined conductor including six second conductors each being formed in a continuous zig-zag pattern, the second conductors being overlapped sequentially with displacement, and the second combined conductor being placed with displacement of one pitch from the first combined conductor, the first and second combined conductors are overlapped into a conductor assembly, the conductor assembly being wound by five turns. A stator includes the above cage coil. | 05-10-2012 |
20120217836 | MOTOR - To provide a motor in which a cage coil formed of a wave winding conductor wire wound in plural turns and with bent portions is inserted in an integral type stator core. The motor including a stator provided with a wave winding coil using a flat conductor and a stator core, and a rotor provided with a rotor shaft is configured such that the wave winding coil includes the cage coil formed of a first wave winding wire assembly wound in plural turns, this assembly being formed of a plurality of bent-end wave winding conductor wires formed in a meandering pattern and overlapped in sequence with displacements from each other, a coil end part of the cage coil at one end is bent toward the rotor with respect to in-slot portions of the stator core, and the coil end part at the one end is positioned closer to an axis of the rotor than an inner peripheral surface of the stator core is. | 08-30-2012 |
20130113330 | Rotating Electrical Machine and Vehicle Equipped with Rotating Electrical Machine - A rotating electrical machine includes: a stator core; a stator winding; and a rotor. Cross conductors connect slot conductors to run astride slots with the slot pitch N+1 at coil ends on one side and run astride slots with the slot pitch N−1 at coil ends on another side, with N representing a number of slots per pole; the stator winding includes slot conductor groups each having a plurality of slot conductors; the plurality of slot conductors in each slot conductor group are inserted at a predetermined number Ns of successive slots so that the slot conductors in the slot conductor group take successive slot positions and successive layer positions; and the number Ns is set so that Ns=NSPP+NL when NSPP represents a number of slots per phase per pole and a number of layers is expressed as 2×NL. | 05-09-2013 |
20130154428 | WAVE WINDING COIL FOR ROTARY ELECTRICAL MACHINE - A wave winding coil for a rotary electrical machine includes a coil conductor including coil side portions and coil end portions, the coil conductor being wound to include a wave winding configuration, a relational expression expressing a total number of the coil side portions included in a phase coil is expressed by a mathematical expression 1 m×k=n×q×2p, and m refers to the number of the phase unit coils that are parallelly connected to each other, k refers to the number of the coil side portions that are serially connected to each other, q refers to the number of serially-connected-conductors per magnetic pole, the serially-connected-conductor belongs to one of the kinds of the coil side portions, 2p refers to the number of the magnetic pole, m refers to a common divisor between q×2p and n. | 06-20-2013 |
20130187510 | ROTARY ELECTRIC MACHINE - A coil is configured so that: N conductor wires of wave windings each divided at at least two positions in a circumferential direction are provided in one of a plurality of slots; within a unit of the divided wave windings in which conduction is made, the N conductor wires are connected in one of series and parallel to each other at division positions located at substantially the same circumferential position of conductor-wire end portions; division units of the divided wave windings are connected in series to each other, and a total number of series turns of the series-connected division units of the each phase is a predetermined number of series turns, which does not exceed an upper limit value of a terminal voltage of the rotary electric machine; and the series-connected division units of the each phase have the same total number of series turns. | 07-25-2013 |
20130221793 | STATOR OF ROTARY ELECTRIC MACHINE - A stator of a rotary electric machine includes a stator core and polyphase coils. The stator core has a plurality of slots. The polyphase coils are provided in the slots. Each phase of the polyphase coils has a plurality of coils formed for each pole and connected in parallel. When winding in which a coil pitch is equal to number of slots divided by number of poles is termed full-pitch winding, when winding in which a coil pitch is larger than the coil pitch of the full-pitch winding is termed long-pitch winding, and when winding in which a coil pitch is smaller than the coil pitch of the full-pitch winding is termed short-pitch winding, at least two of the coils of each phase are formed on the stator core by wave winding to alternate between the long-pitch winding and the short-pitch winding along a circumferential direction of the stator core. | 08-29-2013 |
20140252908 | STATOR OR ROTOR WITH INTERLACED WIRE GROUPS FORMING AN INTERTWINED WAVE WINDING - The disclosed stator or rotor has a distributed wave winding, in which the wires are associated in pairs lying with straight segments in the same slots. Head portions of two successive straight segments of each wire of a pair protrude from opposite ends of slots. For forming two wire groups, a plurality of coil windings are simultaneously created by winding up n parallel wires with intermediate spacing onto a striplike former that is rotatable about its longitudinal axis. From each of the parallel wires one straight segment and one end turn are doubled by being bent over with the wire length of a head portion, and then head portions are formed and the wires interlaced. Finally, the two wire groups are wound onto one another and thereby intertwined with one another, and then introduced as an entire intertwined wave winding strand into the stator or rotor slots. | 09-11-2014 |
20140333169 | WINDING ARRANGEMENT FOR AN ELECTRICAL MACHINE - A design for and method of winding an electric motor, generator or other electrical machine using multiple strands of wire preformed into a wave shape with a plurality of legs connected by shaped end turns. This results in efficient packing and improved machine performance in terms of both efficiency and power density without the need for flux concentrators. The conductors or windings may be preformed so as to be a self supporting structure, aiding assembly and eliminating the need for an iron core. | 11-13-2014 |
20150381000 | STATOR FOR ROTATING ELECTRIC MACHINE - A stator includes an annular stator core and a stator coil. The stator core has U-phase slots, V-phase slots and W-phase slots sequentially and repeatedly provided in pairs in its circumferential direction. The stator coil has U-phase, V-phase and W-phase windings respectively received in the U-phase, V-phase and W-phase slots. In each of the slots, there are received 2×N in-slot portions of a corresponding one of the phase windings in radial alignment with each other, where N≧2. Each of the phase windings consists of a pair of sub-windings connected parallel to each other. Each of the sub-windings includes winding sections that are classified into N winding section groups. Each of the winding sections of (N−1) winding section groups is connected via only serial connection, and each of the winding sections of the remaining one winding section group is connected via both serial connection and parallel connection. | 12-31-2015 |
20160065026 | ARMATURE FOR ROTARY ELECTRIC MACHINE - An armature winding is configured by mounting into an armature core a plurality of distributed-winding coils that are each produced by bending and shaping a conductor wire that is coated with insulation, coil ends are configured by arranging coil end portion rows that are formed by arranging coil end portions of the coils in a single row circumferentially in n layers in a radial direction, where n is an integer that is greater than or equal to 1, and an interphase insulating material includes: a strip-shaped insulating sheet material that is inserted inside the coil end portions, and that is disposed so as to extend circumferentially between the coil end portion rows; and an insulating buffering material that is formed on one surface of the insulating sheet material, and that is fixed to the coil end portion rows by forming air bubble groups internally. | 03-03-2016 |