Bar Windings Patents (Class 310/201)
  • Patent number: 11936261
    Abstract: An electric machine comprising a stator with a plurality of open slots accommodating double-layer distributed winding with conductors transposed in the end-winding area. The conductors are litz wire conductors and the end-winding portions of the conductor are not twisted or turned around the axis of the conductor.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: March 19, 2024
    Assignee: Kongsberg Maritime AS
    Inventors: Jon Ivar Koa, Roar Furuhaug, Stev Erlend Skaar, Njål Rotevatn
  • Patent number: 11909261
    Abstract: A stator module (10) and a motor are provided. The stator module (10) includes a stator core (1) and a stator winding (2). The stator core (1) includes a plurality of stator slots (11), and the plurality of stator slots (11) are distributed in a circumferential direction of the stator core (1). A first winding coil (21) of each phase of the stator winding (2) includes a first winding part (211) and a second winding part (212) connected end to end, the first winding part (211) includes a first crossing segment (2111) to a sixth crossing segment (2116), and the second winding part (212) includes a seventh crossing segment (2121) to a twelfth crossing segment (2126). A second winding coil (22) of each phase of the stator winding (2) includes a third winding part (221) and a fourth winding part (222) connected end to end.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: February 20, 2024
    Assignee: BYD COMPANY LIMITED
    Inventors: Shenglang Shu, Bin You
  • Patent number: 11888349
    Abstract: A stator assembly of a hairpin winding motor including hairpin coils continuously connected along a circumferential direction to form a coil winding; and a stator core configured to fix the hairpin coils. Outer circumferential surfaces of the hairpin coils formed in the circumferential direction contact an inner circumferential surface of the stator core.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: January 30, 2024
    Assignee: Hyundai Mobis Co., Ltd.
    Inventors: Yong Ho Kim, Min Mo Koo, Joon Hyung Kim
  • Patent number: 11867119
    Abstract: An electric generator equipped in a multi-shaft gas turbine engine for aircraft, includes: a rotor attached to the rear end portion of a low-pressure shaft rotatably supported by a bearing in the gas turbine engine; a stator provided around the rotor; wherein the electric generator has no structure to support the low-pressure shaft and the rotor.
    Type: Grant
    Filed: February 10, 2022
    Date of Patent: January 9, 2024
    Assignee: IHI Corporation
    Inventor: Naoki Seki
  • Patent number: 11863108
    Abstract: Device for determining the angular position of a rotor of a rotary electric machine on the basis of signals delivered by a plurality of position sensors, including a circuit producing a control loop for estimating position of the rotor, delivering at output a signal representative of the position, and a circuit for dynamic normalization by the amplitude of the first harmonic of each signal originating from a position sensor. The circuit receives as input each signal originating from a position sensor, and at least one image of the signal representative of the position of the rotor and is configured to demodulate each signal by the image of the signal, determine, at the end of this demodulation, amplitude of the first harmonic of this signal originating from a position sensor, and normalize each signal by dividing it by the amplitude of the first harmonic of the previously determined signal.
    Type: Grant
    Filed: November 9, 2020
    Date of Patent: January 2, 2024
    Assignee: VALEO EQUIPEMENTS ELECTRIQUES MOTEUR
    Inventor: Laurent Labiste
  • Patent number: 11791700
    Abstract: An apparatus for bending ends, arranged in annular layers, of bar conductors for an electrical machine are arranged in a stator main body having multiple coaxially arranged coupling elements with coupling recesses, by which the ends of the bar conductors can be taken layer by layer and plastically deformed. Each coupling element has a driving platform, which can be moved in the axial direction together with the coupling element. The coupling element belonging to a driving platform can be rotated on the driving platform. All of the driving platforms move axially on a common climbing linkage. Each driving platform has a dedicated first driving device for axially moving the driving platform and a dedicated second driving device for rotating the coupling element on the driving platform, wherein the two driving devices are moved axially, together with the driving platform. The apparatus is of a simple construction requiring little installation space.
    Type: Grant
    Filed: September 10, 2021
    Date of Patent: October 17, 2023
    Assignee: FELSOMAT GmbH & Co. KG
    Inventors: Juergen Peschina, Peter Haberstroh
  • Patent number: 11777355
    Abstract: A stator to be provided in an electric rotating machine includes a stator core and a distributed winding coil. The stator core has a plurality of slots. The distributed winding coil includes a plurality of segment coils coupled to each other. Each of the segment coils is accommodated across a pair of slots out of the plurality of slots. The distributed winding coil has a coil structure including a plurality of parallel coils coupled to each other in series. Each of the parallel coils includes two or more of the segment coils. The two or more segment coils are coupled to each other in parallel and are accommodated across the same pair of slots out of the plurality of slots. The two or more segment coils included in each of the parallel coils are disposed adjacent to each other in a radial direction in the same pair of slots.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: October 3, 2023
    Assignee: SUBARU CORPORATION
    Inventors: Masatoshi Hanaoka, Nobuhiko Tanaka
  • Patent number: 11765533
    Abstract: The present invention provides a capacitive microphone such as a MEMS microphone with two capacitors. The signal output from the first capacitor is additive inverse of that from the second capacitor, and a total signal output is a difference between the two outputs. In at least one of the two capacitors, a movable or deflectable membrane/diaphragm moves in a lateral manner relative to the fixed capacitor plate, instead of moving toward/from the fixed plate. The squeeze film damping, and the noise are substantially avoided, and the performances of the microphone is significantly improved.
    Type: Grant
    Filed: December 13, 2020
    Date of Patent: September 19, 2023
    Assignee: GMEMS TECH SHENZHEN LIMITED
    Inventors: Guanghua Wu, Xingshuo Lan, Zhixiong Xiao
  • Patent number: 11764628
    Abstract: A stator for an electric machine includes a plurality of pins arranged on concentric circles at different distances to a stator center in slots in the stator, and each concentric circle forms a layer. In each case, six pins in different layers are serially connected to one another and form a winding. A first pin of the winding is located in a first slot in the 6n-1 layer, wherein n is an integer. A second pin of the winding is located in a second slot in the 6n layer. A third pin of the winding is located in the first slot in the 6n-2 layer. A fourth pin of the winding is located in the second slot in the 6n-3 layer. A fifth pin is located in the first slot in the 6n-5 layer. A sixth pin of the winding is located in the second slot in the 6n-4 layer.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: September 19, 2023
    Assignee: VALEO SIEMENS EAUTOMOTIVE GERMANY GMBH
    Inventors: Boris Dotz, Christian Finger-Albert
  • Patent number: 11765534
    Abstract: The present invention provides a capacitive microphone such as a MEMS microphone with two capacitors. The signal output from the first capacitor is additive inverse of that from the second capacitor, and a total signal output is a difference between the two outputs. In at least one of the two capacitors, a movable or deflectable membrane/diaphragm moves in a lateral manner relative to the fixed capacitor plate, instead of moving toward/from the fixed plate. The squeeze film damping, and the noise are substantially avoided, and the performances of the microphone is significantly improved.
    Type: Grant
    Filed: December 13, 2020
    Date of Patent: September 19, 2023
    Assignee: GMEMS TECH SHENZHEN LIMITED
    Inventors: Guanghua Wu, Xingshuo Lan, Zhixiong Xiao
  • Patent number: 11757322
    Abstract: The disclosure relates to winding arrangements for electrical machine stators. Example embodiments include a coil for a tooth element of an electrical machine stator, the coil formed from a plurality of hairpin wires having pairs of legs passing through first and second slots on opposing radial faces of the tooth element, the coil having n full turns passing around the tooth element, the first and second slots each having 2n+2 slot positions having a depth d? for accommodating a single hairpin wire, the slots each having a first slot position at a first common end and a 2n+2th slot position at a second opposing end, the coil having first and second terminal connections connected to hairpin wires extending through the first and second slots at respective first and second slot positions.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: September 12, 2023
    Assignee: ROLLS-ROYCE plc
    Inventor: Vladimir A. Shirokov
  • Patent number: 11735968
    Abstract: A rotary electric machine includes a rotor, a stator, and stator windings. The stator winding has a plurality of slot conductor groups having a plurality of slot conductors of the same phase. A plurality of slot conductors of the slot conductor group are inserted into a predetermined number (Ns) of slots continuously arranged in a circumferential direction of the stator core such that the slot and the layer are adjacent to each other. The predetermined number (Ns) is set to “Ns=NSPP+1,” where “NSPP” denotes the number of slots per pole per phase.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: August 22, 2023
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Yasuyuki Saito, Yuji Kanoh, Toshio Ishikawa
  • Patent number: 11705790
    Abstract: The invention relates to a method for producing an arrangement for a plug-in coil of an electrical machine, comprising the steps of: providing a core with slots; providing coil elements which are rod-shaped and have a proximal end and a distal end; inserting the coil elements into the slots from an end side of the core with the distal end at the front in such a way that the proximal end is arranged in the region of the end side and the distal end is arranged in the region of an opposite end side of the core or adjacent to it; and producing a respective jointed connection for the distal ends or the proximal ends of a first coil element and of a second coil element with an associated first connecting element on the opposite end side or the end side of the core, wherein, here, before joining between the respective joining partners, specifically the distal end or the proximal end of the first coil element and a first joining section of the first connecting element and also the distal end or the proximal end of th
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: July 18, 2023
    Assignee: Aumann AG
    Inventors: Ludger Martinschledde, Florian Sell-Le Blanc, Timo Schmit
  • Patent number: 11682995
    Abstract: The present embodiment is a high rotor pole switched reluctance machine (HRSRM) which provides a plurality of combinations of the number of rotor poles Rn and number of stator poles Sn utilizing a numerical relationship defined by a mathematical formula, Rn=2Sn?Fp, when Sn=m×Fp, wherein Fp is the maximum number of independent flux paths in the stator when stator and rotor poles are fully aligned, and m is the number of phases. The mathematical formulation provides an improved noise performance and design flexibility to the machine. The mathematical formulation further provides a specific number of stator and rotor poles for a chosen m and Fp. The HRSRM can be designed with varying number of phases. The HRSRM provides a smoother torque profile due to a high number of strokes per revolution.
    Type: Grant
    Filed: March 7, 2022
    Date of Patent: June 20, 2023
    Assignee: Turntide Technologies, Inc.
    Inventors: Mahesh Krishnamurthy, Trevor Creary, Piyush Desai, Mark Johnston
  • Patent number: 11677287
    Abstract: A stator includes a stator core and a stator winding. The stator core has a cylindrical shape and a plurality of slots. The stator winding includes a plurality of phase windings each including a plurality of segment conductors inserted into the slots and coupled to each other in series. Each of the segment conductors has a pair of straight parts and a bend. The pair of straight parts is accommodated in two of the plurality of slots. The bend protrudes from an end face of the stator core and couples the pair of straight parts to each other. In each of the plurality of slots, the number of the bends protruding from the end face of the stator core to extend in one of circumferential directions matches the number of the bends protruding from the end face of the stator core to extend in the other of the circumferential directions.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: June 13, 2023
    Assignee: SUBARU CORPORATION
    Inventors: Kenichi Fukunaga, Kimihiro Nagase
  • Patent number: 11658532
    Abstract: A stator has a stator core composed of teeth and slots. Segment coils are inserted into the corresponding slots. The segment coil projecting from the slot has an exposed conductor part and a covered conductor part covered with an electrical insulation film. The exposed conductor part is arranged at the distal end side from the covered conductor part of the segment coil. The segment coils are connected together through the exposed conductor parts thereof projecting from the slots. The exposed conductor part has a thickness T2 thinner than a thickness T1 of the covered conductor part. A step part is formed at a position of the stator core side, adjacent to the exposed conductor part of the segment coil. The step part and the covered conductor part are covered with the electrical insulation film continuously from the stator core side of the covered conductor part.
    Type: Grant
    Filed: September 14, 2020
    Date of Patent: May 23, 2023
    Assignees: DENSO CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ryosuke Maruyama, Hiroaki Takeda, Yasuhiro Makido, Toshiro Nakamura, Ken Shirai
  • Patent number: 11632006
    Abstract: In one embodiment, a stator coil that includes a first turn with two or more strands is provided. The first turn includes first and second opposite sides, a coil termination at a first end of the first turn and an inversion region disposed at a second end, opposite the coil termination. The stator coil also includes at least one additional turn with two or more strands. The at least one additional turn includes first and second opposite sides, and an inversion region located adjacent to the inversion region of the first turn. The first and second sides of the first turn are inverted relative to the first and second sides of the at least one additional turn outside their respective inversion regions.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: April 18, 2023
    Assignee: Honeywell International Inc.
    Inventors: Cristian E Anghel, Tom Phielix, Yongbae Jung
  • Patent number: 11621617
    Abstract: The invention relates to a stator (2) comprising an annular body (4) having a side face (6) from which a plurality of radial teeth (8) extend, said teeth being angularly spaced in such a way as to define slots (10), and a plurality of conductive needles (15A, 15B), each conductive needle comprising two conductive segments (16A, 16B, 16C, 16D) connected by an elbow connector (18), the conductive segments being stacked one above the other in the slots (10) so as to form N layers which are parallel or substantially parallel to the side face (6) of the annular body. Each conductive needle (15A, 15B) comprises a conductive segment present in two separate slots, with one conductive segment present in a slot E in such a way as to occupy a layer (Ci) and another conductive segment present in a slot E+P in such a way as to occupy a layer (Ci+2), P being a pitch that is predetermined in a first direction of orientation.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: April 4, 2023
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Vincent Ramet, Jean Duquesne, Stéphane De Clercq, Julien Pauwels, Laurent Delassus, Humberto Menezes
  • Patent number: 11601763
    Abstract: The present invention provides a capacitive microphone including a MEMS microphone. In the microphone, a movable or deflectable membrane/diaphragm moves in a lateral manner relative to a fixed backplate, instead of moving toward/from the fixed backplate. The fixed backplate includes an electrical insulator sandwiched between two sub-conductors to cancel systematic/background noise. The squeeze film damping is substantially avoided, and the performance, such as signal to noise ratio, of the microphone is significantly improved.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: March 7, 2023
    Assignee: GMEMS TECH SHENZHEN LIMITED
    Inventors: Guanghua Wu, Xingshuo Lan
  • Patent number: 11594997
    Abstract: The disclosure relates to a method for determining an incorrect operating state of an electrical machine with the aid of an electronic circuit having at least one comparator. The electrical machine is controlled with a pulse width modulation signal. The pulse width modulation signal is demodulated. A first signal, which represents the demodulated pulse width modulation signal, is compared with a second signal. The second signal represents a rotational speed or a rotational angle of the electrical machine and/or a current intensity of the electrical machine. This comparison is carried out with the aid of the at least one comparator. An error signal is generated based on the comparison in order to determine the incorrect operating state of the electrical machine.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: February 28, 2023
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventor: Wolfram Siegfried Birkmayer
  • Patent number: 11588383
    Abstract: A stator (1) for an electric motor, including; a plurality of pins (11, 12, 13, 14, 21, 22, 23, 24, 31, 32, 33, 34) which are arranged on at least two concentric circles; and an interface (10, 20, 30) with at least one contact face (19, 29, 39), which is connected to two electrically conductive legs (10a, 10b, 20a, 20b, 30a, 30b) and is supported by the legs, wherein the legs are connected to at least one pin on different concentric circles.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: February 21, 2023
    Assignee: VALEO SIEMENS EAUTOMOTIVE GERMANY GMBH
    Inventors: Mert Ciftcioglu, Dieter Sonnack
  • Patent number: 11575289
    Abstract: Coil segments of the same phase are inserted into each group of circumferentially consecutive three slots. Assuming that the grouped three slots are A, B, and C, and six groups are U1 to U6, respectively, and that slot y of group Ux are slot Uxy, a coil starting from the slot U1A is wired to pass through one turn of a stator in the order of slots U1A?U2B?U3B?U4C?U5C?U6A, and connected to slot U1A of the next turn. In this turn, coil segments with a wide straddle width are used for the connections of U1A?U2B and U3B?U4C, and a coil segment with a narrow straddle width is used for the connection of U5C?U6A.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: February 7, 2023
    Assignee: ODAWARA ENGINEERING CO., LTD.
    Inventor: Noburo Miyawaki
  • Patent number: 11569700
    Abstract: To obtain a rotating electric machine capable of downsizing the rotating electric machine in an axial direction and in a radial direction. A first inner-peripheral-side terminal includes a first conductor-exposed portion and a second inner-peripheral-side terminal includes a second conductor-exposed portion opposed to the first conductor-exposed portion. An opposing portion being a portion, at which the first conductor-exposed portion and the second conductor-exposed portion are opposed to each other, extends in a radial direction, and at least a part of the opposing portion of the first conductor-exposed portion and the second conductor-exposed portion is arranged on an inner side in the radial direction compared to the first outer-peripheral-side terminal and the second outer-peripheral-side terminal.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: January 31, 2023
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuro Hino, Kohei Egashira, Shinya Matsunaga, Yasuhiro Hayasaka, Norihiro Murata, Kazuya Hasegawa, Katsuya Ito
  • Patent number: 11557933
    Abstract: An electric machine a stator having a stator core and windings positioned thereon. The stator core has a plurality of slots formed therein and a winding positioned in the plurality of slots. The winding includes at least four parallel paths distributed in slot sets of the stator core. Each slot set includes at least four contiguous slots including two left slots and two right slots. A first parallel path and a second parallel path are arranged in the two left slots for at least a first revolution of the winding around the core. The first parallel path and the second parallel path are arranged in the two right slots for at least a subsequent revolution of the winding around the core.
    Type: Grant
    Filed: December 31, 2020
    Date of Patent: January 17, 2023
    Assignee: BorgWarner Inc.
    Inventors: Kirk Neet, Tausif Husain
  • Patent number: 11546711
    Abstract: The present invention provides a process of fabricating a capacitive microphone such as a MEMS microphone. In the process, one electrically conductive layer is deposited on a removable layer, and then divided or cut into two divided layers, both of which remain in contact with the removable layer as they were. One of the two divided layers will become or include a movable or deflectable membrane/diaphragm that moves in a lateral manner relative to another layer, instead of moving toward/from another layer. A motional sensor is optionally fabricated within the microphone to estimate the noise introduced from acceleration or vibration of the microphone for the purpose of compensating the microphone output through a signal subtraction operation.
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: January 3, 2023
    Assignee: GMEMS TECH SHENZHEN LIMITED
    Inventors: Guanghua Wu, Xingshuo Lan
  • Patent number: 11522399
    Abstract: A rotor for a rotary electric machine, including: a stack of magnetic laminations each having openings, the superposition of these openings within the stack forming slots, at least some of the openings having, on at least part of their periphery, friction reliefs, electrically conducting bars made of a first material, received in at least part of the slots and coming to bear via at least one principal face against said reliefs.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: December 6, 2022
    Assignee: MOTEURS LEROY-SOMER
    Inventors: Sébastien Porcher, Thierry Visse, Mike McClelland, François Turcat
  • Patent number: 11502586
    Abstract: An arm of a coil segment having an approximate U shape is placed in a slot of a stator core, and a portion protruding from the slot is bent in a circumferential direction. An arm is bent in a direction of an arrow A, and another arm positioned at an inner side in the radial direction in relation to this arm is bent in a direction of an arrow B. The arm positioned at the outer side has at least a part of a bending inner side surface of a bent portion hardened by pressurization.
    Type: Grant
    Filed: August 13, 2021
    Date of Patent: November 15, 2022
    Assignee: TOYOA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yu Takanezawa, Daisuke Mizushima, Rikuto Takagi
  • Patent number: 11496013
    Abstract: A rotating electrical machine stator and a method for manufacturing a rotating electrical machine stator with high productivity. A rotating electrical machine stator includes a stator core having a slot; and a coil having a leg part including a held-in-slot part held in the slot and a portion extending from the held-in-slot part, and a resin foam is provided between an inner surface of the slot and an outer surface of the held-in-slot part facing the inner surface of the slot. The coil is formed by joining together a plurality of segment conductors each having a joint part, and a conductive joint material is disposed between a pair of joint parts facing each other in the slot.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: November 8, 2022
    Assignee: AISIN CORPORATION
    Inventors: Kiyotaka Koga, Tomotsugu Sugihara, Tetsuya Funayama, Shinya Katayama, Takahiro Kobuchi
  • Patent number: 11489377
    Abstract: A rotary electric machine includes a stator extending along an axis and having teeth arranged about the axis. The teeth are circumferentially spaced apart by slots. Winding coils extend around the teeth and through the slots. The winding coils are electrically connected to one another to form phases. At least one of the winding coils has a first portion extending through first and second slots of the slots and including first end turns extending between the first and second slots over an axial end surface of the teeth. A second portion extends through the first and second slots and includes second end turns extending between the first and second slots over the axial end surface of the teeth. The first and second portions are connected in series at a third end turn spaced closer to the axial end surface than either the first or second end turns.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: November 1, 2022
    Assignee: LC ADVANCED MOTOR TECHNOLOGY CORPORATION
    Inventors: Russel Hugh Marvin, Dylan Broomfield
  • Patent number: 11489389
    Abstract: A stator for an electric machine includes a plurality of pins, which are arranged on concentric circles at different distances to a stator center in slots in the stator, and each concentric circle forms a layer. In each case four pins in different layers are serially connected to one another and form a winding, a first pin of the winding is located in a first slot in the 4n?3 layer, wherein n is an integer, a second pin of the winding is located in a second slot in the 4n?2 layer, wherein the second slot has a first radial distance to the first slot in a first circumferential direction of the stator, a third pin of the winding is located in the first slot in the 4n layer, and a fourth pin of the winding is located in the second slot in the 4n?1 layer.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: November 1, 2022
    Assignee: VALEO SIEMENS EAUTOMOTIVE GERMANY GMBH
    Inventor: Boris Dotz
  • Patent number: 11489388
    Abstract: A stator for an electric machine includes a plurality of pins arranged on concentric circles at different distances to a stator center in slots, and each concentric circle forms a layer. In each case, four pins in different layers are serially connected to one another and form a winding. A first pin of the winding is located in a first slot in the 4n?1 layer, wherein n is an integer. A second pin of the winding is located in a second slot in the 4n layer, wherein the second slot has a first radial distance to the first slot in a first circumferential direction of the stator. A third pin of the winding is located in a third slot in the 4n?2 layer, wherein the third slot lies adjacent to the first slot. A fourth pin of the winding is located in a fourth slot in the 4n?3 layer.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: November 1, 2022
    Assignee: VALEO SIEMENS EAUTOMOTIVE GERMANY GMBH
    Inventor: Boris Dotz
  • Patent number: 11478840
    Abstract: Provided is a manufacturing method of a wire rod for forming a coil, the manufacturing method including the steps of: placing an element wire in a forming space surrounded by a plurality of split dies; and pressure-forming the element wire by moving the plurality of split dies in a direction of narrowing the forming space. In the step of pressure-forming the element wire, at least one of the plurality of split dies is moved, and the plurality of split dies each having a surface that changes in shape in a longitudinal direction of an element wire to pressure-form the element wire into the wire rod having a plurality of different cross-sectional shapes in the longitudinal direction.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: October 25, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Shigeharu Sumi, Shigeru Maeda
  • Patent number: 11482913
    Abstract: A manufacturing method for a coil includes: a step of winding a wire (conductive wire) in multiple layers and multiple rows and forming a coil having a trapezoidal cross-sectional shape; a step of arranging the coil in a molding space surrounded by a plurality of split dies; and a step of moving the slit die in a direction of narrowing the molding space to mold the cross-sectional shape of the coil. In the step of molding the cross-sectional shape, at least one of the plurality of split dies is moved to mold the cross-sectional shape into a fan shape by surfaces formed in the split dies.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: October 25, 2022
    Assignee: NIDEC CORPORATION
    Inventor: Shigeharu Sumi
  • Patent number: 11473669
    Abstract: An electric drive apparatus includes a rotating electric machine and a transmission. The rotating electric machine includes a rotor, a stator and a first housing. The transmission includes a motive power transmitting unit, a second housing provided integrally with the first housing, and lubricating oil provided in the second housing to lubricate the motive power transmitting unit. The stator includes a stator coil that has first and second coil end parts respectively protruding from first and second axial end faces of a stator core. Each of phase windings of the stator coil has turn portions included in the first coil end part and joints included in the second coil end part. The second coil end part is located on the same axial side of the stator core as the transmission whereas the first coil end part is located on the opposite axial side of the stator core to the transmission.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: October 18, 2022
    Assignee: DENSO CORPORATION
    Inventors: Hiroshi Endo, Ryo Tanie
  • Patent number: 11469630
    Abstract: Rectangular conductor wires are often used in alternator applications requiring a high slot fill to maximize output and efficiency. However for lower output and efficiency applications, round conductor wire may increase cost competiveness in these alternators. A common lamination for a core alternatively accommodates both rectangular conductor wires and round conductor wires for different applications without any other component changes. The lamina has a slot that aligns round wire in a single row within the slot and provides a predetermined clearance from the slot opening. A stator core formed from these laminae has a relatively high slot fill factor when wound with the round wire. The same stator core can be alternatively wound with square wire to increase the slot fill factor even higher. The common lamination results in two stator configurations: a high slot fill version (round wire) and a very high slot fill version (square wire).
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: October 11, 2022
    Assignee: BorgWarner Inc.
    Inventors: Jiwon Chung, Kirk Neet
  • Patent number: 11456641
    Abstract: A stator assembly, a motor, and a vehicle are disclosed. The stator assembly includes: a cylindrical stator core, where multiple stator slots spaced out along a circumferential direction of the stator core exist on the stator core; and a stator winding, where the stator winding includes multiple conductor segments. Each conductor segment includes an intra-slot part disposed in a stator slot of the stator core, and a first end and a second end that are disposed outside the stator core. The intra-slot part is connected between the first end and the second end, and the second ends of the multiple conductor segments form a welding end. All lead-out lines of each phase of the stator winding are located on the welding end.
    Type: Grant
    Filed: September 29, 2018
    Date of Patent: September 27, 2022
    Assignee: BYD COMPANY LIMITED
    Inventors: Kaili Tian, Bin You, Wenming Qi
  • Patent number: 11427085
    Abstract: A long stator power supply section and a long stator linear motor for a maglev train, comprising a plurality of stator core modules (1) and stator coils (2) equal in number to the stator core modules (1). Each stator of the plurality of stator coils (2) is correspondingly embedded into one stator core module of the stator core modules (1) respectively; joints are arranged at both ends of each stator coil (2); the stator coils (2) on every two adjacent stator core modules (1) are detachably connected by means of the joints; and the joints of the stator coils (2) on the stator core modules (1) at both ends are connected to a feeder cable.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: August 30, 2022
    Assignee: CRRC ZHUZHOU ELECTRIC LOCOMOTIVE RESEARCH INSTITUTE CO., LTD.
    Inventors: Gaohua Chen, Jianghua Feng, Benyu Xin, Rongjun Ding, Kuisen Tian, Shuying Guo
  • Patent number: 11381127
    Abstract: An electric machine provided with a stator structure including internal and external layers of interleaved pre-wound coils made of rectangular wire coated with enamel insulation varnish is described herein. The two layers of pre-wound coils allow the use of slightly different size of pre-wound coils, which facilitates their insertion into the stator slots.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: July 5, 2022
    Assignee: DANA TM4 INC.
    Inventors: Gyula Bihari, Ruisheng Shi, Mohammad Adib Ghadamyari
  • Patent number: 11336140
    Abstract: The invention mainly concerns a coiling procedure of a stator for a multiphase electrical rotating machine: the said stator comprising grooves, each intended to take up an uneven number of conductors of a coil, the said coil comprising two systems, each comprising one group of conductors (C1-C3, C1?-C3?) respectively, the said procedure comprises stages of installation of the conductors (C1-C3, C1?-C3?) into the said grooves, repeated in order to form a coil comprising several turns (S1-S9) completed alternately according to a first direction of rotation (K1) and according to a second direction of rotation (K2) opposite the first direction of rotation, with the characteristic that at least two changes of direction of rotation (CH1-CH8) from one turn to the other are carried out in different angular zones.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: May 17, 2022
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Stéphane De Clercq, Geoffrey Wilquin, Sébastien Leclercq
  • Patent number: 11296565
    Abstract: The invention relates to a stator having a multi-phase wave winding made of hairpin conductor elements (5). Each phase consists of two parallel or serially connected branches (6, 6.1, 6.2). Each branch has a first (3.1) and a second (3.2) winding portion, which are connected to each other in series. The slot position of the two limbs (5.1) of each hairpin conductor element alternates by +?1. The first winding portion (3.1) extends clockwise along the stator circumference; the second winding portion (3.2) extends counterclockwise and is connected to the first winding portion via a reverse-connector conductor element (12, 12.1, 12.2). Both limbs of the reverse-connector conductor element (12.1) of the first winding branch (6.1) are located in the uppermost slot position; the limbs of the reverse-connector conductor element (12.2) of the second winding branch (6.2) are located in the lowermost slot position.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: April 5, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Andreas Herzberger, Armin Elser, Martin Ermer, Patrick Heuser, Tobias Hein, Johannes Riedl
  • Patent number: 11296560
    Abstract: A motor is used in a compressor. The motor includes a stator including a stator core having a yoke part that extends in a circumferential direction about an axis and a plurality of teeth that extend from the yoke part toward the axis and are arranged in the circumferential direction, and a winding wound around the plurality of teeth of the stator core in wave winding, and a rotor whose number of poles is P and which is disposed on an inner side of the stator in a radial direction about the axis. When a number of the plurality of teeth is represented by S, S/P?6 is satisfied. The yoke part has a refrigerant passage through which refrigerant passes in a direction of the axis.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: April 5, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventor: Atsushi Ishikawa
  • Patent number: 11264854
    Abstract: An electric machine includes a stator and a rotor configured to be driven in rotation in relation to one another. The rotor includes a plurality of permanent magnets, and the stator further includes a magnetic circuit including poles extending toward the rotor. The machine includes windings of conducting elements around each pole and at least one heat sink arranged inside a conducting element and/or between the conducting elements. The heat sink includes a phase change material.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: March 1, 2022
    Assignee: SAFRAN HELICOPTER ENGINES
    Inventors: Thomas Klonowski, Camel Serghine
  • Patent number: 11264847
    Abstract: A reluctance motor is used in a compressor. The reluctance motor includes a rotor having a rotor core that has an annular outer circumference about an axis, having a plurality of magnetic poles along the outer circumference, and having no permanent magnet, and a stator including a stator core that surrounds the rotor from an outer side in a radial direction about the axis and a winding wound around the stator core in wave winding. Each of the plurality of magnetic poles has a first slit formed in the rotor core and a second slit formed on an inner side of the first slit in the radial direction. The stator core has a refrigerant passage through which refrigerant passes in a direction of the axis.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: March 1, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventor: Atsushi Ishikawa
  • Patent number: 11196312
    Abstract: A motor includes a stator including a stator core and teeth respectively protruding from the stator core in predetermined directions of protrusion, and coils respectively wound onto the teeth n (n is an integer of 3 or greater) turns including first to n-th turns. A k-th (k is an integer, 1<k<n) turn of each of the coils lies at a center of a range wound with each of the coils onto the teeth in a corresponding one of the directions of protrusion of the teeth from the stator core. Each of the first turn and the n-th turn when each of the coils is cut in a corresponding one of the directions of protrusion of the teeth is greater in cross-sectional area than the k-th turn.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: December 7, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yuichi Yoshikawa, Keiichiro Nukada, Hirokazu Yamauchi, Mitsuoki Hishida, Yasushi Kato
  • Patent number: 11177713
    Abstract: Provided is an excellent insulating rotating electric machine having a small axial size and a small number of components. In the rotating electric machine according to the present invention, radially outer-side terminals and radially inner-side terminals extend from slots while a circumferential bending direction is alternately changed for each group of n radially outer-side terminals or n radially inner-side terminals after the extension thereof from the slots. A first angle formed between at least one of an oblique-side portion of each of the n radially inner-side terminals, which are continuous in the circumferential direction of the stator core and are bent in the same circumferential bending direction, and an oblique-side portion of each of the n radially outer-side terminals, which are continuous in the circumferential direction and are bent the same circumferential bending direction, and an end surface of a stator core monotonously decreases in the circumferential bending direction.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: November 16, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kohei Egashira, Masashi Nakamura, Tatsuro Hino
  • Patent number: 11112275
    Abstract: Devices, systems, and method for detecting, determining and compensating for offset error arising in inductive position and torque sensors are described. In accordance with at least one embodiment, an offset coil can be configured for use within an inductive sensor and include a first trace and at least one second trace. The first trace and the at least one second trace may be drawn within a stator of an inductive sensor. The first trace and the at least one second trace may be drawn within the stator proximate to a pair of excitation coil connecting leads, drawn on a first plane within the stator, and on at least one plane substantially parallel to the first plane such that wherein an excitation coil flowing through the pair of excitation coil connecting leads induces an offset coil signal in the first trace and at least second trace.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: September 7, 2021
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventor: Jacques Jean Bertin
  • Patent number: 11075551
    Abstract: A stator of a rotary electrical machine has a stator body formed by a stack of metal sheets. The stator body is delimited by inner and outer radial surfaces. Notches in the stator body extend axially. Each notch has a notch base and a notch opening, and the notch opening is on the side of the inner radial surface. A stator winding is supported by the stator body, and the winding has a plurality of winding parts. Each part is accommodated in one of the notches. Each of the notches at the notch opening has a closure element. Each winding par in a notch is retained between the notch base and the closure element. The closure elements are formed by offsetting at least one of the metal sheets of an adjacent notch in the direction of the notch.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: July 27, 2021
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Pierre-Yves Bilteryst, Henri Delianne, David Margueritte, Eric Jozefowiez, Sylvain Perreaut, Patrice Balthaze, Julien Battut
  • Patent number: 11063487
    Abstract: A stator that includes a stator core having a plurality of slots; a first coil that is disposed in a first slot of the plurality of slots; and a second coil that is disposed in a second slot of the plurality of slots that is different from the first slot in which the first coil is disposed.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: July 13, 2021
    Assignee: AISIN AW CO., LTD.
    Inventor: Kiyotaka Koga
  • Patent number: 11063488
    Abstract: The present disclosure relates to a stator for an electric rotating machine, the stator comprising a stator core comprising teeth and slots, and a stator coil comprising a plurality of hairpins configured to be inserted into the slots of the stator core in a predetermined pattern. Each of the plurality of hairpins comprises a conductor and a coating layer surrounding an outer surface of the conductor. The plurality of hairpins comprise a first hairpin configured to be placed in a first section of the stator coil predetermined from an end to which power is to be input, and a second hairpin placed in a section after the first section. The first hairpin provides better insulation performance than the second hairpin, and the first section has a higher voltage distribution ratio than the section including the second hairpin.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: July 13, 2021
    Assignee: LG Electronics Inc.
    Inventors: Hojun Shin, Kyeonghwan Kim, Gyeongjae Park, Wonjung Sung, Yangsoo Lee, Junghyun Park, Junho Ahn
  • Patent number: 11038456
    Abstract: A control apparatus is provided to control a rotating electric machine whose number of poles is switched from a pre-switching number of poles to a post-switching number of poles. The control apparatus includes a pre-switching control unit, a post-switching control unit and a transition control unit. The pre-switching control unit controls the torque generated by the machine before the switching of the number of poles. The post-switching control unit controls the torque generated by the machine after the switching. During a pole-number switching period, the transition control unit controls electric currents flowing in stator coils of the machine or voltages applied to the stator coils to make each magnetic pole formed with control by the pre-switching control unit not coincident with any magnetic pole formed with control by the post-switching control unit and having the same polarity as the magnetic pole formed with the control by the pre-switching control unit.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: June 15, 2021
    Assignee: DENSO CORPORATION
    Inventors: Jun Ishida, Makoto Taniguchi