Field Or Excitation Windings Or Structure Patents (Class 310/180)
  • Patent number: 11177705
    Abstract: Disclosed are a permanent magnet motor, a compressor and a refrigeration system. In the permanent magnet motor, the diameter D of a contour circle of the smallest inner periphery of a stator, the diameter d of a contour circle of the largest outer periphery of a rotor, the fundamental wave amplitude Bm1 of an air-gap flux density at an average gap between the stator and the rotor, the axial length L of the rotor, the total number of serially connected turns Ns of each phase winding, and a bus DC voltage Udc of a frequency converter supplying power to the permanent magnet motor before inversion are set as: 0.003 Udc?(D+d)×L×Bm1×Ns?0.008 Udc.
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: November 16, 2021
    Assignee: GUANGDONG MEIZHI COMPRESSOR CO., LTD.
    Inventors: Zhengzhong Qiao, Linshu Mao, Xiaohua Qiu, Yangbo Yu
  • Patent number: 11159070
    Abstract: The invention proposes a stator for a rotating electric machine, in particular for a motor vehicle, the stator (15) including: —a body (27) including notches (37) that are opened radially into an internal wall (40) of said body, —at least one winding (43) forming a phase of the stator, the winding formed from turns (54) includes a first half-phase (49) and a second half-phase (50) that are superposed radially in the notch (37), each turn including a series of axial strands (44) that are received in a series of associated notches and connecting strands (45, 46) that connect the successive axial strands (44) by extending alternatively to protrude with respect to the body (27). A length of wire of each turn of one of the half-phases is larger than the length of wire of each turn of the other half-phase. Furthermore, one of the half-phases has a number of turns higher than that of the other half-phase.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: October 26, 2021
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Vincent Ramet, Eric Delcroix, Sébastien Leclercq, Alain Defebvin
  • Patent number: 11108310
    Abstract: This rotary electric machine rotor includes: a Lundell core that includes a cylindrical portion, a pair of yoke portions, and a plurality of claw-shaped magnetic pole portions; a bobbin that is mounted around an outer circumference of the cylindrical portion; a field coil that is wound onto the bobbin in multiple layers, the field coil contacting a vicinity of roots of inner circumferential surfaces of the claw-shaped magnetic pole portions; and a cooling fan that supplies air to an outer circumferential surface of the field coil, wherein the field coil is formed so as to have a peaked shape in which two or more peaks line up consecutively in an axial direction, an apex portion of each of the peaks being positioned radially further outward than a root position of the claw-shaped magnetic pole portions.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: August 31, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventor: Kazuya Hasegawa
  • Patent number: 11075557
    Abstract: The present invention relates to a rotor (1) of a rotary electric machine, comprising: a body (3) comprising a cylindrical central core (5) and a circumferential plurality of arms (B1 . . . B18) extending radially out from the cylindrical central core (5), the body (3) being intended to be mounted with the ability to move about an axis of rotation X, a coilset produced by windings of turns and forming at least one series of coils (C1 . . . C9, C1? . . . C9?), a coil (C1 . . . C9, C1? . . . C9?) comprising a predetermined number of turns around at least two arms (B1 . . . B18) of the body (3), two adjacent coils (C1 . . . C9, C1? . . . C9?) of a series being angularly offset from one another with a partial overlap, in which the last coil (C9, C9?), situated radially furthest towards the outside, comprises a predetermined number of turns that is lower than the predetermined number of turns of the other coils of the series (C1 . . . C8, C1? . . . C8?).
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: July 27, 2021
    Assignee: Valeo Systèmes d'Essuyage
    Inventors: Jose-Luis Herrada, Quentin Aubugeau
  • Patent number: 11070100
    Abstract: A stator for an electric machine includes a stator carrier having a plurality of grooves with a respective groove base, and a motor winding having at least one first strand. A predetermined number of first grooves of the plurality of grooves is associated with the first strand. At least one coil section of the first strand is introduced into each of the first grooves. The first strand has a plurality of individual wires connected electrically in parallel, with each wire formed as a round wire. At least some of the individual wires in each of the coil sections are arranged above one another in a radial direction of the stator. The coil sections are each arranged in the first grooves in such a way that an average radial distance of the individual wires to the groove base is equal for all individual wires.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: July 20, 2021
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Michael Bernhardt, Daniel Fritsch, Michael Müller
  • Patent number: 11070101
    Abstract: A method and apparatus for cooling a rotor assembly for an inside-out electric machine includes an annular rotor core defining a set of rotor posts, the core rotatable about an axis of rotation, a set of windings wound around the respective set of rotor posts, and a wedge disposed between adjacent sets of rotor windings.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: July 20, 2021
    Assignee: GE AVIATION SYSTEMS LLC
    Inventors: Sumit Singhal, Hao Huang
  • Patent number: 11056944
    Abstract: In order to provide a rotary machine's stator that is capable of reducing the size of the coil ends and using a plurality of voltages without changing the winding arrangement, it is made to include a stator core (12) having a plurality of slots (14) provided along the circumferential direction, segments (22) that are composed of rectangular wires and received in the slots (14), and a distributed winding wire that is formed by arranging unit coils (21), each of which is made up of a plurality of the segments (22) disposed along the radial direction, in the circumferential direction of the stator core (12), and is made to form the unit coil (21) by connecting the segments (22) that are alternately and concentrically arranged in the radial direction with a plurality of slot pitches that are different from each other.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: July 6, 2021
    Assignee: MEIDENSHA CORPORATION
    Inventor: Takeshi Suwazono
  • Patent number: 10998788
    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: January 25, 2019
    Date of Patent: May 4, 2021
    Assignee: BorgWarner, Inc.
    Inventors: Kirk Neet, Tausif Husain
  • Patent number: 10998791
    Abstract: A stator of the present invention includes a conductor wire. A portion of the conductor wire disposed adjacent to a coil winding center is connected to a power supply. A portion of the conductor wire disposed outwardly away from the coil winding center is connected to a neutral point.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: May 4, 2021
    Assignees: AISIN AW CO., LTD., HAYASHIKOGYOSYO CO., LTD.
    Inventors: Toru Kuroyanagi, Ko Kajita, Takahiko Hobo
  • Patent number: 10903709
    Abstract: An insulating holder is provided with a bobbin portion and bus bar supporting portions, and the bus bar supporting portions have bus bar walls which electrically separate each of the bus bars, and step portions are formed, in a lamination direction of the bus bars, at the bus bar walls. Gap portions are formed, between the bus bars and the bus bar walls, in a longitudinal direction of the bus bars and in a lamination direction of the cores, at the step portion, and an insulating cap, which complements the gap portions from the outside and maintains the bus bars, is provided, in a state where the bus bars are installed to the bus bar walls.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: January 26, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshiaki Kitta, Hironori Tsuiki
  • Patent number: 10873250
    Abstract: The present disclosure provides a linear vibration motor, including a base having a receiving space, a vibration unit located in the receiving space, an elastic member fixed to the base and suspending the vibration unit in the receiving space, and a coil fixed to the base and opposite to and spaced away from the vibration unit. The vibration unit includes a magnet, the magnet is opposite to and spaced away from the coil, the coil includes a first coil for connecting an electric signal and a second coil insulated from the first coil, and both ends of the second coil are connected to each other to form a closed loop. Compared with the related art, the linear vibration motor in the present disclosure has high reliability.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: December 22, 2020
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Fanghua Ling, Xiaofeng Pu, Tao Zhang, Jinquan Huang
  • Patent number: 10840760
    Abstract: A stator of a rotary electric machine related to the invention includes: a stator core in which a plurality of slots are formed and an opening part of each of the plurality of slots is provided in an inner circumferential surface thereof; and a coil including a plurality of coil segments that are inserted from the opening part of each of the plurality of slots. At least a first coil segment and a second coil segment are arranged so as to be overlapped in a radial direction in each slot, and an engagement part which prevents a relative movement in an axial direction is provided on overlapping surfaces of the first coil segment and the second coil segment.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: November 17, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Makoto Nishida, Tomotaka Iki
  • Patent number: 10819204
    Abstract: The present disclosure provides a vibration motor. The vibration motor includes a first vibrator and a second vibrator which perform relative moved. One of the first vibrator and the second vibrator is provided with a magnetic circuit, and the other one is provided with a coil corresponding to the magnetic circuit. The coil and the magnetic circuit interact to generate a driving force to drive the relative moved of the first vibrator and the second vibrator. A BL value of the magnetic circuit can be effectively improved, a better vibration feeling can be achieved, and the circuit reliability can be improved.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: October 27, 2020
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Lubin Mao, Yun Tang
  • Patent number: 10797556
    Abstract: The present invention is an electrical machine comprising a rotor (10) and a stator (12) having radial passages (28) arranged circumferentially along the stator, magnetic-flux generators (34) housed in the passages, and a stator bearing (24) containing the rotor. According to the invention, the radial passages (28) comprise fluid-circulation galleries (36) facing the magnetic-flux generators (34).
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: October 6, 2020
    Assignees: IFP ENERGIES NOUVELLES, MAVEL S.R.L.
    Inventors: Luca Favre, Davide Bettoni
  • Patent number: 10778127
    Abstract: An aircraft power generation unit to generate direct current (DC) power includes a flux regulated permanent magnet generator (PMG) that includes first through fourth sets of windings and a control coil and a rectifier section that include first through fourth six pulse rectifiers and a common local output bus. The unit also includes an output bus configured to be connected to the load and an H-bridge circuit connected across the output bus and outputs connected to the control coil. A controller receives an input signal from at least one of the windings and selectively couples either the common local output bus and fourth rectifier to the output bus negative rail and one or more of the first, second and third six-pulse rectifiers to the output bus to provide a constant voltage to the load.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: September 15, 2020
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Gregory I. Rozman, Steven J. Moss
  • Patent number: 10693336
    Abstract: A stator assembly for a permanent magnet motor is disclosed. The assembly comprises a yoke comprising a plurality of teeth in connection therewith and extending into an opening formed by the yoke. The plurality of teeth comprises a first tooth and a second tooth. The first tooth is arranged adjacent to the second tooth about a rotational axis of the motor. The assembly further comprises a first coil and a second coil. The first coil comprises a first conductive winding having a first number of turns disposed around the first tooth, and the second coil comprises a second conductive winding having a second number of turns disposed around the second tooth. The first number of turns is different from the second number of turns.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: June 23, 2020
    Assignee: Whirlpool Corporation
    Inventor: Fang Deng
  • Patent number: 10666106
    Abstract: Stators are already known which in each case comprise an annular stator stack having grooves which are open towards an axis of the stator and in which an electrical winding is provided which comprises a plurality of winding branches. The plurality of winding branches each have a plurality of parallel wires for reducing the so-called skin effect. The parallel wires are arranged in the grooves, wherein the winding branches in their configuration each form a plurality of turns of a coil which are each part of an electrical coil, wherein a turn of a coil is formed in each case by two sides of a turn, lying in different grooves, of one of the winding branches and by a turn side connector which connects the two sides of a turn to one another. In electrical windings having parallel wires, an unfavourable wire position and a resulting linking of different magnetic flows may lead to disadvantageous compensating or circular currents which produce additional copper losses in the electric motor.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: May 26, 2020
    Assignee: Robert Bosch GmbH
    Inventors: David Bauer, Patrick Heuser
  • Patent number: 10618424
    Abstract: A vehicle includes an electric machine having independently selectable delta and wye windings. The electric machine has a lower torque producing limit with one of the windings than an other of the windings at a given speed. The vehicle includes a controller configured to select the other of the windings such that torque of the electric machine increases without increasing the given speed. The selection is responsive to operating with the one of the windings and a torque demand greater than the lower torque producing limit.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: April 14, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Matthew Joseph, Prasad Venkiteswaran, Shehan Haputhanthri, Jacob Krizan
  • Patent number: 10615679
    Abstract: The present disclosure provides a vibration motor. The vibration motor includes a housing having a bottom wall and a side wall, a vibrator received in the housing, and an elastic member supporting vibration of the vibrator. The side wall includes a first side wall extending in a long axis direction of the vibration motor and a second side wall extending in a short axis direction of the vibration motor. The coil is disposed inclined to the first side wall. The vibration motor provided by the present disclosure can simultaneously provide driving forces in two directions of X and Y, achieves dual-f0 vibration output, and is simple in structure, so that not only the working band is effectively expanded, but also the vibration effect is enriched.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: April 7, 2020
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Lubin Mao, Zhaoxian Chen
  • Patent number: 10581293
    Abstract: An electric machine having a stator with windings all having the same length. The stator includes a plurality of slots. A plurality of windings are mounted in the slots of the stator core and define a plurality of poles circumferentially distributed about the stator core. Each winding defines at least a first wrap and a second wrap wherein each of the first and second wraps circumscribes the stator core. Each of the first and second wraps includes a wire segment disposed in a slot in each pole. The first wrap of each winding is primarily disposed in one of the layers and the second wrap of each winding is primarily disposed in a different one of the layers. The first wrap of each winding defines a first linear length and the second wrap of each winding defines a second linear length that differs from the first linear length.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: March 3, 2020
    Assignee: BORGWARNER INC.
    Inventors: Kirk E. Neet, Timothy J. Sailors
  • Patent number: 10554087
    Abstract: A rotating electric machine includes a pair of electric conductors for forming a coil and a weld. Each of the electric conductors has an end portion with an end surface. The weld is formed between the end portions of the electric conductors at the end surfaces of the end portions. Moreover, the end portions of the electric conductors are arranged so that parts of the end portions of the electric conductors adjoin each other. At least one of the end portions of the electric conductors has at least one slit formed therein to divide the end surface of the end portion into a plurality of sections. The weld is formed to cover, at least, the adjoining parts of the end portions of the electric conductors and the at least one slit.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: February 4, 2020
    Assignee: DENSO CORPORATION
    Inventors: Atsuo Ishizuka, Hiromitsu Asai, Mitsuyuki Hayashi, Yoki Tsujimori
  • Patent number: 10473107
    Abstract: The ideal design for a fan with variable performance that can replace a family of current axial flow ducted, un-ducted, and centrifugal fan designs by meeting air flow and pressure requirements while drawing less electric current to rotate and thus produce the required flow not only would reduce cost of operation over the life of the fan but opens new possibilities for direct connection to solar collection systems by greatly extending the life of the battery charge employed by the designer of the collection system. In addition the entry of flying machines using pairs of lifting fans such as hover bikes and quadcopters, manned or unmanned is driving a need to re-examine the application of force applied to rotate these fans to achieve a reduction in aircraft weight and increase flying time for a given battery charge or load of fuel.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: November 12, 2019
    Inventors: Stephen Thomas Newton, Stephen Thomas Newton, II
  • Patent number: 10439462
    Abstract: A stator coil includes a plurality of flat wire-shaped coil pieces extending in a circumferential direction of a rotary electric machine at a position on an outer side of a stator core in an axial direction of the rotary electric machine. At the position on the outer side of the stator core in the axial direction, a distal end portion of one of the coil pieces, extending in a first direction in the circumferential direction, is joined with a distal end portion of another one of the coil pieces, extending in a second direction in the circumferential direction. The second direction in the circumferential direction is reverse to the first direction in the circumferential direction. An axially outer end face of the distal end portion of each coil piece is a circular arc face that is convex toward the outer side in the axial direction.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: October 8, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yasuyuki Hirao
  • Patent number: 10432123
    Abstract: A current controller calculates a drive signal by means of fundamental wave current control and high-order current control, for driving an inverter. A 5th order/7th order voltage command calculation section calculates a 5th order/7th order voltage command vector Vdk*, Vqk* by means of feedback control which makes a high-order dq transformation value extracted from the actual current coincide with a 5th order/7th order current command value Idk*, Iqk*.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: October 1, 2019
    Assignee: DENSO CORPORATION
    Inventor: Yasuhiro Nakai
  • Patent number: 10411526
    Abstract: A component for a rotating electrical machine includes a stator, a winding, and a covering material. The stator has a stator core with a plurality of slots. The winding is inserted into one slot. The covering material covers the winding. The winding has a molten metal junction. The covering material has a non-bending part and a bending part. The bending part has a contact area that is smaller than an area between the non-bending part and the winding. The bending part is provided between the molten metal junction and the portion of the winding inserted in the one slot.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: September 10, 2019
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventor: Kenichi Nakayama
  • Patent number: 10396614
    Abstract: A stator of a rotating electrical machine includes: a plurality of annularly arranged stator cores; a stator winding attached to slots of the stator cores; and a shell (22) that retains the stator cores. In the stator of the rotating electrical machine, the ends of coil terminal wires (19), (20) on the innermost circumferential side and the outermost circumferential side of each slot are oriented in the axial direction of the stator; and side surfaces of the ends of the terminal wires (19), (20) are brought into contact with each other and are welded above the coil end (21) of the stator winding.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: August 27, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Ryuichi Kitora, Masashi Nakamura, Masaya Inoue, Shogo Okamoto, Atsushi Sakaue, Tatsuro Hino
  • Patent number: 10340672
    Abstract: A conducting wire end portion joining method is a method for conductively joining together end portions of conducting wires each covered with an insulation coating. The conducting wire end portion joining method includes: adjoining end portions of two winding wires, and bringing the end portions of the conducting wires of the two winding wires into contact with a conductive coating material stored in an insulating cap having a property of shrinking when heated; and shrinking the insulating cap by heating to fix the shrunken insulating cap around the insulation coatings of the end portions of the two winding wires, and joining together the end portions of the two winding wires by conductively connecting the conducting wires of the two winding wires via the hardened conductive coating material.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: July 2, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yoshitomo Kawanishi
  • Patent number: 10203475
    Abstract: A magnetic actuator, comprising a first magnet having a first magnetic axis and having a first magnetic field, a second magnet having a second magnetic axis and having a second magnetic field, the first and second magnets defining, at least in part, a magnetic assembly; and a coil actuator assembly at least partially disposed about the magnetic assembly, wherein the first and second magnetic fields collectively approximate a curve. A tilt platform assembly, comprising a support base: a tilt platform pivotally coupled to the support base: at least one coil actuator assembly, mounted to one of the support base or the tilt platform; and at least one magnet assembly mounted to the other of the support base or tilt platform, and being disposable within the at least one coil actuator assembly, the at least one magnetic assembly comprising at least two magnets having respective magnetic fields angularly offset from one another and that collectively approximate a curve.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: February 12, 2019
    Assignee: Raytheon Company
    Inventors: Scott Balaban, Christopher A. Cox
  • Patent number: 10177641
    Abstract: A stator assembly for an electric motor includes a drive plate, a first magnetic core and a second magnetic core. A first core slot is formed in the first magnetic core and a second slot is formed in the second magnetic core. The first and second magnetic cores each include two elongated members joined at one end by a base member which are defined by the respective core slots. The two elongated members extend from the base member substantially parallel to each other toward the drive plate. A stator coil is wound through the first core slot and the second core slot. An electrical current flowing in the stator coil generates a magnetic field about the stator coil that is absorbed by the first magnetic core and the second magnetic core to generate a magnetic flux in each of the magnetic cores that magnetically attracts the drive plate.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: January 8, 2019
    Assignee: The Boeing Company
    Inventors: James L. Peck, Jr., Robert J. Atmur
  • Patent number: 10148144
    Abstract: A drive unit for a revolving door with an electronically commutated multipole motor having a quantity of coil elements and a quantity of magnet elements. The multipole motor has a flat base structure and a disk-shaped or cup-shaped stator part arranged at a stationary structural component part. A disk-shaped or cup-shaped rotor part is arranged in a plane-parallel manner with respect to the stator part and can be drivingly connected to a turnstile of the revolving door. The coil elements and the magnet elements are received in an area between the stator part and the rotor part.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: December 4, 2018
    Assignee: DORMAKABA DEUTSCHLAND GMBH
    Inventors: Sven Busch, Stefan Kissler, Thomas Schmitz
  • Patent number: 10135322
    Abstract: Alternator rotor, comprising: a set of polar wheel field windings, an exciting armature, and an electronic power supply circuit supplying power to the set of polar wheel field windings from the exciting armature, the rotor being characterized in that the electronic power supply circuit comprises a bearing made of insulating material and conducting tracks held by said bearing, these tracks connecting the exciting conductors to terminals into which electronic components of the electronic power supply circuit are plugged and locked mechanically in place.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: November 20, 2018
    Assignee: MOTEURS LEROY-SOMER
    Inventor: Patrick Vohlgemuth
  • Patent number: 10079562
    Abstract: A method for switching on a multi-phase electrical machine in a motor vehicle, the multi-phase electrical machine having a rotor having a rotor winding, and a stator having a multi-phase stator winding; a phase voltage having a phase voltage vector being applied, in a PWM operating mode, to the stator winding, said vector corresponding in terms of absolute magnitude and direction to a pole wheel voltage vector of a pole wheel voltage; the rotor winding being energized by an excitation current; and the PWM operating mode being deactivated, and a block operating mode for application of the phase voltage being activated, when at least one parameter influencing the pole wheel voltage reaches a threshold value.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: September 18, 2018
    Assignees: ROBERT BOSCH GMBH, SEG AUTOMOTIVE GERMANY GMBH
    Inventor: Julian Roesner
  • Patent number: 10063117
    Abstract: There is provided a dynamo-electric machine that can provide excellent insulating properties by downsizing coil ends. A dynamo-electric machine includes a stator and a rotator. The stator has a stator iron core formed with a plurality of slots arranged in a circumferential direction, and a stator coil inserted into the slots of the stator iron core. The rotator is rotatably disposed on the stator iron core with a predetermined gap. The stator coil is provided with an insulating film. The stator coil includes a main coil and a lead wire with an alternating current terminal. The main coil has a plurality of segment coils connected to one another. The segment coil is a conductor in a rectangular cross section formed in advance in a nearly U-shape. The lead wire is led from the slot. The tip end of the segment coil is formed in a trapezoid cross section.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: August 28, 2018
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventor: Kenichi Nakayama
  • Patent number: 10033324
    Abstract: A vehicle includes a first and second motors, a high-voltage device, and a power converter. The power converter is disposed between the first and second motors. The power converter is configured to convert the electric power and to supply the converted electric power to the first and second motors. The power converter has a substantially rectangular parallelepiped shape that has a first side wall, a second side wall opposite to the first side wall, a third side wall, and a fourth side wall opposite to the third side wall. The first connector is provided on the first side wall and is connected to a first three-phase line via which the first motor is electrically connected to the power converter. The second connector is provided on the third side wall and is connected to a second three-phase line via which the second motor is electrically connected to the power converter.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: July 24, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Tomohiro Fukazu, Noboru Fujiyoshi, Kosuke Oguri
  • Patent number: 10003316
    Abstract: A device that filters electromagnetic interference includes electrical conductors mounted in parallel. Each conductor includes a first coil positioned between a first and a second end of the respective conductor. Each first coil is coupled magnetically to each other first coil and has the same number of turns as each other first coil. The first and second ends of each of the conductors, respectively, are first and second terminals for the device. The device includes capacitors. Each capacitor is mounted between the second end of a corresponding electrical conductor and a third terminal of the device. The device includes an additional circuit. The additional circuit includes a second coil coupled magnetically with the first coils of the conductors. The additional circuit includes an additional coil. The second coil has a second number of turns.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: June 19, 2018
    Assignee: Valeo Systemes de Controle Moteur
    Inventor: Dominique Oswald
  • Patent number: 9979242
    Abstract: An electric machine including a rotor and a stator and having a first winding. The stator slots define a plurality of layer positions wherein each of the layer positions is at a different radial distance from the axis. There is an odd number of select stator slots wherein for two slot segments disposed in different layer positions, a pair of end loops connect each of the slot segments with another slot segment in a different slot that is in the same layer position. In some embodiments, at least 60 percent of the end loops connect slot segments that are disposed in different layer positions. For some embodiments, only a single select stator slot is provided with the end loops being positioned to reduce spatial conflicts.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: May 22, 2018
    Assignee: BORGWARNER INC.
    Inventors: Kirk Neet, Timothy J. Sailors
  • Patent number: 9929623
    Abstract: A method and apparatus for operating a reluctance motor. The apparatus comprises a stator and a plate. The stator includes a plurality of electromagnetic coils having an overlapped configuration. Applying multi-phase current to the plurality of electromagnetic coils generates a magnetic field. The plate forms a virtual pole when a portion of the plate contacts the stator in response to the magnetic field. Rotating the magnetic field about a center axis through the stator rotates the virtual pole about the center axis.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: March 27, 2018
    Assignee: THE BOEING COMPANY
    Inventor: Robert J. Atmur
  • Patent number: 9917484
    Abstract: A reluctance motor has: a stator provided with drive coils to which multiphase drive currents are inputted; and a rotor provided with a plurality of salient poles which receive primary rotating force when magnetic fluxes generated in the drive coils are interlinked with the rotor, and the rotor has: inductor pole coils which are placed on magnetic paths on which spatial harmonic components superimposed on the magnetic fluxes generated in the drive coils are interlinked with the rotor side so that induced currents can be generated in the inductor pole coils due to the spatial harmonic components of the magnetic fluxes; rectifier elements which rectify the induced currents generated in the inductor pole coils; and electromagnet coils as defined herein, and the inductor pole coils and the electromagnet coils do not serve for each other's purposes but are placed on the rotor individually.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: March 13, 2018
    Assignee: SUZUKI MOTOR CORPORATION
    Inventor: Masahiro Aoyama
  • Patent number: 9899888
    Abstract: A coil structure for a rotary electric machine includes phase coils for magnetic flux generation. Each of the phase coils includes a plurality of first element conductors, a plurality of second element conductors, a plurality of first crossover portions, and a plurality of second crossover portions. The plurality of second element conductors are provided in a plurality of second slots among slots. The second slots are provided in a circumferential direction of a stator at a pitch of a first predetermined interval. The second slots are shifted in phase by a second predetermined interval with respect to first slots in the circumferential direction of the stator. The first predetermined interval is set to be an interval equivalent to N times a unit pitch. The second predetermined interval is set to be an interval smaller than the first predetermined interval.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: February 20, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takumi Shibata, Yoshihisa Matsuoka
  • Patent number: 9853527
    Abstract: In a method for producing a rotor including a leak prevention hole formed in a rotor core to prevent leakage of magnetic flux from a permanent magnet; an outer-circumferential-side dovetail groove formed in an outer-circumferential-side inner wall of the leak prevention hole, an inner-circumferential-side dovetail groove formed, opposite the outer-circumferential-side dovetail groove, in an inner-circumferential-side inner wall of the leak prevention hole; and a non-magnetic bridge having both end portions engageable with the dovetail grooves, an external force is applied to bring the outer-circumferential-side inner wall close to the inner-circumferential-side inner wall, the non-magnetic bridge is inserted in the dovetail grooves while keeping the rotor core in an elastically deformed state, and, after inserting, the external force is released.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: December 26, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ippei Hamanaka, Yasuyuki Hirao, Yasuo Kinoshita
  • Patent number: 9847686
    Abstract: A stator core with a plurality of slots circumferentially arranged therearound has a stator winding including three (UVW) phase windings, each phase winding having 4n parallel windings. The stator winding is formed of U-shaped conductor segments inserted in the slots from one axial end, a pair of open end portions of each conductor segment extending axially from of the stator core and being bent toward circumferentially opposite directions, the bent portions being star connected together. The plurality of slots have, for each phase winding, pairs of circumferentially adjacent slots, each slot having an even number of slot-received portions of the phase winding radially aligned in a column, and for each circumferential slot pairs, the slot-received portion in an m-th layer of each slot of the pair is electrically connected to the portion inserted in an (m+1)-th layer of a slot of a circumferentially adjacent slot.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: December 19, 2017
    Assignee: DENSO CORPORATION
    Inventor: Akito Tamura
  • Patent number: 9847684
    Abstract: A stator includes a hollow cylindrical stator core and a stator coil. The stator core has a plurality of slots formed therein. The stator coil is provided in the slots of the stator core in a plurality of layers in a radial direction of the stator core, and includes a first winding and a second winding. The first winding extends around the stator core so as to be located at the (2n?1)th and 2nth layers of the stator coil, and has an end located at the 2nth layer, where n is a natural number. The second winding extends around the stator core so as to be located at the (2n+1)th and (2n+2)th layers of the stator coil, and has an end located at the (2n+1)th layer. The ends of the first and second windings, which are respectively located at the 2nth and (2n+1)th layers, are electrically connected to each other.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: December 19, 2017
    Assignee: DENSO CORPORATION
    Inventors: Hideaki Suzuki, Masahiro Seguchi, Yuki Takahashi
  • Patent number: 9806570
    Abstract: In a rotor structure including a leak prevention hole formed in a rotor core to prevent leakage of magnetic flux from a permanent magnet; an outer-circumferential-side dovetail groove formed in an outer-circumferential-side inner wall of the leak prevention hole, an inner-circumferential-side dovetail groove formed, opposite the outer-circumferential-side dovetail groove, in an inner-circumferential-side inner wall of the leak prevention hole; and a non-magnetic bridge having both end portions engageable with the dovetail grooves. The non-magnetic bridge is formed with a chamfer at only one end face of both end faces in an axial direction of the rotor core. The non-magnetic bridge includes two or more non-magnetic bridges. The non-magnetic bridges are arranged so that the end faces formed with the chamfers are alternately located at the one end face of the rotor core.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: October 31, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ippei Hamanaka, Yasuyuki Hirao, Yasuo Kinoshita
  • Patent number: 9768664
    Abstract: A wobble plate drive system may include a stator having a central axis, an upper surface perpendicular to the central axis, and a plurality of stator teeth disposed on the upper surface. The system may further include a wobble plate having a wobble axis disposed at a non-zero angle relative to the central axis, a lower wobble surface perpendicular to the wobble axis, and an upper wobble surface perpendicular to the wobble axis. A plurality of lower wobble teeth may be disposed on the lower wobble surface and a plurality of upper wobble teeth may be disposed on the upper wobble surface. The system may include an output gear having an output axis substantially aligned with the central axis and a lower surface perpendicular to the output axis. A plurality of output teeth may be disposed on the lower surface. The wobble plate may be configured to rotate as it nutates around the stator.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: September 19, 2017
    Assignee: The Boeing Company
    Inventors: Robert J. Atmur, William Patrick Sargent
  • Patent number: 9748826
    Abstract: A winding method of forming a coil by edgewise bending a flat rectangular conductor comprises a step of edgewise bending the rectangular conductor to form edgewise bending portions so that two predetermined two adjacent bent portions are formed so that an outward bulging portion to be generated by edgewise-bending of the flat rectangular conductor is generated in a concentrated manner in a side between the two edgewise bent portions, and the side having the bulging portion constitutes each of a pair of opposite sides of the coil.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: August 29, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masayuki Matsushita, Kenji Harada, Shingo Fubuki
  • Patent number: 9735639
    Abstract: A bus bar includes an insulator and a plurality of terminals inserted into the insulator and connected to the coil of a stator. The central axes of virtual circles extended from the inner circumferential surfaces of the plurality of terminals are differently disposed. The insulator may have a simple structure because the terminals having the same shape are assembled. The productivity of an assembly process can be improved.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: August 15, 2017
    Assignee: LG Innotek Co., Ltd.
    Inventors: Woo seob Shim, Seong Jin Kim, Jinho Kim, Kyung Sang Park, Chang Hyun Park
  • Patent number: 9660602
    Abstract: Device (1) for filtering electromagnetic interference, comprising: —a plurality of electrical conductors (5) mounted in parallel, each conductor (5) comprising a first coil (10) disposed between a first (7) and a second (8) end of the conductor (5), said first coils (10) being coupled magnetically together and exhibiting one and the same first number of turns, said first (7) and second (8) ends of the conductors (5) respectively defining first (7) and second (8) terminals for the device, —a plurality of capacitors (13), each capacitor (13) being mounted between the second and (8) of an electrical conductor (5) and a third terminal (15) of the device, and —an additional circuit (20) comprising a second coil (21) coupled magnetically with the first coils (10) and exhibiting a second number of turns, said circuit (20) furthermore comprising an additional coil (23).
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: May 23, 2017
    Assignee: Valeo Systemes de Controle Moteur
    Inventor: Dominique Oswald
  • Patent number: 9601957
    Abstract: The invention is the compact multiphase wave winding of a high specific torque electric machine The invention is the compact multiphase wave winding (6) of the electric machine. Winding (6) is filling the slots (5) of the stator ferromagnetic core (3) and comprise one or multiple layers (40). Winding (6) fills the slots (5). Winding comprise N or a multiple on N conductors (8), where N represents the number of winding phases. Conductor (8) comprises or is assembled by parallel straight segments (10) and winding overhangs (11). Between the two straight segments (10) of one conductor (8) there are N teeth (4) and N?1 slots (5) or N+1 teeth (4) and N slots (5). Straight segments are connected by winding overhangs which shape in tangential axial plane differs for less than one sixth of magnetic period (7) from ellipse shape with one axis equal to half of magnetic period (7) and other axis length between half and three quarters of magnetic period (7) length.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: March 21, 2017
    Assignee: Elaphe Propulsion Technologies, Ltd.
    Inventors: Andrej Detela, Gorazd Lampic
  • Patent number: 9601960
    Abstract: An electrical machine includes a back-yoke engagement portion including a convex portion for a back yoke portion formed on an outer-diameter surface of a pair of back yoke-side coil retaining pieces and a shoe engagement portion including a convex portion for a shoe portion. By the convex portion for the back yoke portion and the convex portion for the shoe portion, the back yoke-side coil retaining pieces and shoe-side coil retaining pieces are biased toward a stator core.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: March 21, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Keiji Hino, Kazuhisa Takashima, Atsushi Ichigozaki, Katsuhiko Sakamoto
  • Patent number: 9595852
    Abstract: An apparatus and method for providing electrical insulation between adjacent end turns at different phases within a stator assembly. In one embodiment, the invention is directed to a stator assembly comprising: a stator core; at least two coils of different phases wound on the stator core through the slots and having an end turn that extends from the stator core; and one or more rigid separator members positioned between adjacent end turns of the coils.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: March 14, 2017
    Inventors: Allan J. Bliemeister, Richard D. Van Maaren, James D. Spangle, Paul L. Dreiling, Louis M. Atsinger