Specific Shape Patents (Class 310/156.38)
  • Patent number: 11682932
    Abstract: An electric machine stator includes a soft magnetic yoke having a cylindrical yoke body extending along a central axis, with an outer surface and an inner periphery defining a central opening about the central axis, and a plurality of soft magnetic stator teeth. Each stator tooth defines a first set of air pockets, and a second set of air pockets. An electric machine rotor and permanent magnet material with air pockets are also provided.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: June 20, 2023
    Assignee: Ford Global Technologies, LLC
    Inventors: Leyi Zhu, Chun Tang, Franco Leonardi, Michael W. Degner
  • Patent number: 11682960
    Abstract: An assembly for generating electricity includes a circular track configured to rotate about a first axis of rotation, the circular track comprising a first magnet having a face that is at an angle with respect to the first axis of rotation, a second magnet positioned at a center of the circular track, wherein a face of the second magnet is an opposite polarity to the face of the first magnet such that the second magnet repels the first magnet to rotate the circular track, and a device for converting rotational motion from the circular track into electricity.
    Type: Grant
    Filed: August 18, 2022
    Date of Patent: June 20, 2023
    Assignee: Duplicent, LLC
    Inventor: Curren Emmett Krasnoff
  • Patent number: 11637462
    Abstract: An embodiment provides a stator comprising a stator core having a plurality of teeth and coils wound around the teeth, wherein the tooth includes a body around which the coil is wound and a shoe connected to the body, the shoe includes a plurality of grooves and a curvature center of the inner peripheral surface of the shoe is the same as the center of the stator core.
    Type: Grant
    Filed: March 23, 2022
    Date of Patent: April 25, 2023
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Jin Su Pyeon, Shung Hun Woo
  • Patent number: 11482898
    Abstract: The invention reduces tensile stress generated in the rotor core in a radial direction when a rotor core and a rotor support member are joined. A region in an axial direction (L) in which a melted joint portion (W2) for joining a rotor core (2) and a rotor support member (9) is formed is set as an axial joint region (JR). Among a plurality of corner portions (4c) of the permanent magnet (4), at least one corner portion (4c) that overlaps with the axial joint region (JR) when seen in a radial direction and that faces an outer peripheral surface (CP2) of the rotor core (2) is set as a specific corner portion (4s). Among facing surface portions (5p) of an inner wall portion of the magnet insertion hole (5) that face the corner portions (4c), the facing surface portion (5p) that faces the specific corner portion (4s) is set as a specific facing surface portion (5s).
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: October 25, 2022
    Assignee: AISIN CORPORATION
    Inventors: Hideharu Ushida, Tetsuya Matsubara, Takeshi Yokoyama
  • Patent number: 11469637
    Abstract: A stator includes a plurality of core constituent members arranged side by side in a circumferential direction, each of which has a tooth extending in a radial direction and a pair of core outer extension portion extending in the both circumferential directions from a radial outer end portion of the tooth, and an insulator covering at least a part of the tooth, and a coil wound around the tooth via the insulator. The coil includes a terminal inner coil having a terminal line which is drawn from the radially inner side to the one axial side. The insulator covers the tooth that are circumferentially adjacent to the tooth around which the terminal inner coil is wound. The insulator has a restriction portion so as to restrict the movement of the terminal line of the terminal inner coil.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: October 11, 2022
    Assignee: DENSO CORPORATION
    Inventor: Takumi Suzuki
  • Patent number: 11394259
    Abstract: A rotor of a motor includes: a first slot and a second slot arranged in a “V” shape to each other and a third slot and a fourth slot arranged in a “V” shape to each other; a first permanent magnet and a second permanent magnet disposed in the first slot and the second slot, respectively; and a 1-1 barrier and a 1-2 barrier expandedly disposed on an outer side and an inner side of the first slot, respectively, a 3-1 barrier expandedly disposed on an outer side of the third slot, a 3-2 barrier expandedly disposed on an outer side of the fourth slot, and one 3-3 barrier arranged between an inner side of the third slot and an inner side of the fourth slot.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: July 19, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Kyung Soo Park, Jung Woo Lee
  • Patent number: 11289960
    Abstract: A motor and a brushless wiper motor are provided. The motor (2) includes: a stator (8); coils (24); a shaft (31); a rotor core (32); magnets (33) which are disposed on an outer peripheral surface (32b) of the rotor core (32) and a radial thickness of which at end portions (33s) on both sides in the circumferential direction around the rotation axis is smaller than a radial thickness in a circumferential intermediate portion; and salient poles (35) that are formed between magnets (33) adjacent in the circumferential direction of the outer peripheral surface (32b) of the rotor core (32) and protrude radially outward from the end portions (33s) of the magnets (33) in the circumferential direction. The width dimensions of the salient poles (35) in the radial direction being set to 40° or less in a form of an electrical angle.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: March 29, 2022
    Assignee: MITSUBA Corporation
    Inventors: Ryo Ohori, Naoki Shioda, Gensaku Yamakami
  • Patent number: 11239714
    Abstract: In an IPM motor, since a first portion which is a pressed powder compact made of soft magnetic powder and has a lower magnetic permeability and a lower saturation magnetic flux density than those of a main body portion made of a laminated steel sheet is replaced and disposed in the vicinity of an inner arc side portion of a right end portion of a permanent magnet, local demagnetization is prevented.
    Type: Grant
    Filed: May 5, 2020
    Date of Patent: February 1, 2022
    Assignee: TDK Corporation
    Inventors: Nobuyuki Shimbo, Koji Mitake, Toshihiro Kuroshima
  • Patent number: 11121594
    Abstract: A rotor of a rotating electrical machine includes a substantially annular rotor core with a plurality of magnet insertion holes formed along a circumferential direction and a plurality of magnetic pole portions including permanent magnets inserted into the plurality of magnet insertion holes. The magnet insertion hole includes a first abutment surface on which the outer diameter side first end portion of the permanent magnet slidably abuts and which extends in a substantially linear shape and a second abutment surface on which the outer diameter side second end portion of the permanent magnet slidably abuts and which extends in a substantially linear shape. The inner diameter side first end portion and the inner diameter side second end portion of the permanent magnet are located closer to a center side in the circumferential direction of the permanent magnet than the first imaginary line and the second imaginary line.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: September 14, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Tatsuya Ohzu
  • Patent number: 11121598
    Abstract: A rotor of a rotating electrical machine includes a rotor core, a plurality of magnetic pole portions arranged along a circumferential direction, and a plurality of arc magnets constituting the magnetic pole portions. Each magnetic pole portion includes a magnet portion of at least two layers along a radial direction. In front view, the rotor core includes an outer diameter side magnet insertion hole, an inner diameter side magnet insertion hole, and a refrigerant flow path hole provided between an outer diameter side magnet portion and an inner diameter side magnet portion to overlap a d-axis. A minimum width of a magnetic path formed between the outer diameter side magnet insertion hole and the refrigerant flow path hole is equal to or larger than a minimum width of a magnetic path formed between the outer diameter side magnet insertion hole and the inner diameter side magnet insertion hole.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: September 14, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Tsuyoshi Kamata, Yoshihisa Kubota, Shingo Soma
  • Patent number: 11038399
    Abstract: An electric motor-generator and method of use including a bowl-shaped coated copper windings electromagnet (50M), a bowl-shaped coated copper windings generator coil (50G), a spheroidal shaped super magnet and axle rotor unit (20) having one or a plurality of super magnets assembled together to form an approximately spheroidal shaped super magnet fixedly connected around an axle (30), and, an electric circuit (310) configured in such a way as to repetitively pulse and reverse direct current to the bowl-shaped coated copper windings electromagnet and connect to a power source.
    Type: Grant
    Filed: February 10, 2021
    Date of Patent: June 15, 2021
    Inventor: Christian H. F. Burke
  • Patent number: 11005350
    Abstract: A permanent-magnet synchronous motor includes: an annular stator core; a cylindrical rotor disposed inside the stator core, and having a first end face in an axial direction of the stator core and a second end face in the axial direction; a disk-shaped sensor magnet having a plurality of magnetic poles disposed circumferentially, and having a third end face and a fourth end face; and a magnetic sensor disposed so as to be opposed to the fourth end face in the axial direction, and detecting a rotating position of the sensor magnet. When a first thickness means the axial thickness at the center of each of the magnetic poles and a second thickness means the axial thickness of an inter-magnetic-pole portion between adjacent magnetic poles of the magnetic poles, the second thickness is greater than the first thickness.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: May 11, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takaya Shimokawa, Kazuhiko Baba, Koji Yabe, Tomoaki Oikawa, Mineo Yamamoto, Hiroyuki Ishii, Junichiro Oya, Hiroki Aso, Yuto Urabe
  • Patent number: 10941781
    Abstract: An electric motor vehicle-axial-flow liquid pump which is designed as an internal rotor pump. The electric motor vehicle-axial-flow liquid pump includes a pump housing with an axial inlet opening for admitting a liquid and an axial outlet opening for discharging the liquid, and an electric motor arranged in the pump housing. The electric motor includes a motor stator with at least one external stator coil, a can formed radially inside the at least one external stator coil, and a rotor body which is permanently magnetized and which is provided as an axial-flow impeller rotatably arranged inside the can. The rotor body has an axis of rotation and at least one blade which pumps the liquid from the inlet opening to the outlet opening along the axis of rotation.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: March 9, 2021
    Assignee: PIERBURG PUMP TECHNOLOGY GMBH
    Inventor: Robin Wegener
  • Patent number: 10944304
    Abstract: Disclosed herein are a motor and a method of manufacturing the motor. The motor includes a rotor, a stator including a plurality of coil bobbin unit groups, and a coil prepared on coil bobbin units by winding a wire sequentially on coil bobbin units of each coil bobbin unit group, cutting the wound wire at a cutting point, connecting one end of the cut wire to a neutral point port, and connecting the other end of the cut wire to a driving point port.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: March 9, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hong Jung Kim, Byoung Soo Ko, Tae Ho Yoon, Yong Hyun Jeon
  • Patent number: 10938261
    Abstract: Provided is a covering element for covering a slot between two adjacent teeth of an electromagnetic machine, a stator for an electromagnetic machine and a method of forming a covering element. The covering element comprises a first sub-element and a second sub-element. The first sub-element and the second sub-element are arranged adjacent to each other in a first direction. Further, the second sub-element is made of a different material than the first sub-element.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: March 2, 2021
    Assignee: SIEMENS GAMESA RENEWABLE ENERGY A/S
    Inventors: Subhra Samanta, Hans-Joergen Thougaard
  • Patent number: 10931183
    Abstract: For an asynchronous machine (1), in particular for use in electric vehicles or hybrid vehicles, comprising a rotor (10) and a stator (20) which surrounds the rotor (10), wherein an external stator yoke (21) with a stator yoke height (h21) is formed on the stator (20) and a large number of radially inwardly projecting stator teeth (22) of the same length are formed on the stator yoke (21), wherein a stator slot (23) is respectively formed between adjacent stator teeth (22), wherein an internal rotor yoke (11) is formed on the rotor (10) and a large number of radially outwardly projecting rotor teeth (12) of the same length are formed by the rotor yoke (11), wherein a rotor slot (13) is respectively formed between adjacent rotor teeth (12), wherein the asynchronous machine is of six-phase design, it is proposed that a total number (N1) of stator slots, which denotes the total number of stator slots (23) formed on the stator (20), is seventy-two.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: February 23, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Andre Brune, Miguel Ruiz De Larramendi
  • Patent number: 10916982
    Abstract: An electric motor includes a stator having a stator surface and a rotor rotatable relative to the stator. The rotor includes a plurality of poles, each of which is defined by a pair of magnets positioned in a V-shaped arrangement having a vertex positioned radially inward. The magnets present a mechanical pole angle of the corresponding pole. The rotor also includes a rotor surface that is opposite the stator surface. The rotor surface includes a plurality of circumferentially-spaced pole segments, each of which spans a respective mechanical pole angle. The rotor also includes a plurality of longitudinally extending recesses, each of which is positioned between adjacent pole segments.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: February 9, 2021
    Assignee: Nidec Motor Corporation
    Inventors: Keith I. Hoemann, Lunjie Lu, Michael W. Major
  • Patent number: 10916977
    Abstract: A stator includes: a stator core including a first core part formed by at least one first sheet and a second core part provided on a side face of the first core part and formed by at least one second sheet; and a winding wound around an outer periphery of the first core part and the second core part.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: February 9, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masahiro Nigo, Yuji Hirosawa
  • Patent number: 10784731
    Abstract: A rotor structure includes a rotor core and magnetic steel sheets. A shaft hole fixedly connected to a rotary shaft and an even number of magnetic steel grooves are formed on the rotor core along a rotation axis thereof. The magnetic steel grooves are symmetrically distributed around a periphery of the shaft hole in the rotor core, and the magnetic steel sheets are correspondingly installed in the magnetic steel grooves on a one-to-one basis. First through grooves extending axially and depressed radially are symmetrically distributed and formed around an inner surface of the shaft hole of the rotor core. First circulation holes are enclosed between the first through grooves and an outer surface of the rotary shaft. A motor includes a stator and the rotor structure arranged in an inner hole of the stator. A compressor includes the motor.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: September 22, 2020
    Assignee: GREE GREEN REFRIGERATION TECHNOLOGY CENTER CO., LTD. OF ZHUHAI
    Inventors: Jinfei Shi, Man Wu, Zeyin Mi, Yong Xiao
  • Patent number: 10737567
    Abstract: A hybrid module includes a housing, an annular stator, first and second annular rotors, and a first bearing. The housing is arranged for fixing to a combustion engine and a multi-speed transmission of a vehicle. The annular stator is fixed to the housing. The first annular rotor is disposed on a first axial side of the stator. The second annular rotor is disposed on a second axial side of the stator, opposite the first axial side. The first bearing is installed between the first annular rotor or the second annular rotor, and the annular stator. In an example embodiment, the first annular rotor or the second annular rotor includes an annular magnet. In an example embodiment, the first annular rotor is fixed to the second annular rotor.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: August 11, 2020
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Markus Steinberger, David Smith, Micah Steiner
  • Patent number: 10734878
    Abstract: The present disclosure relates to a spherical wheel motor and a control system thereof, and more particularly, the spherical wheel motor and the control system include a spherical rotor and a stator surrounding an upper surface of the rotor. The rotor includes a spherical outer shell part, a first axial magnet extending in a horizontal direction in the outer shell part, a second axial magnet extending in the horizontal direction and facing the first axial magnet, and a rotary magnet belt provided in a form of a belt with the first axial magnet and the second axial magnet as a central axis. The rotary magnet belt includes a plurality of first rotary magnets and a plurality of second rotary magnets arranged alternately.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: August 4, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Minki Kim, Junbo Park, Dong Yun Jung
  • Patent number: 10658891
    Abstract: Embodiments describe a motor. The motor includes a stator, and a rotor, which is arranged within the stator. An end part of at least one air-gap slot of the rotor has an offset with a predetermined distance and/or a predetermined angle relative to a main body part adjacent immediately to the end part. With the offset of a predetermined distance and/or a predetermined angle configured at the end part of at least one air-gap slot of the rotor, ripple torque of the motor is effectively lower down while complexity of the motor, stator or rotor will not be increased.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: May 19, 2020
    Assignee: DANFOSS (TIANJIN), LTD.
    Inventors: Wanzhen Liu, Li Yao, Yan Lin, Guangqiang Liu, Zhenyu Wang, Meng Wang, Weiping Tang
  • Patent number: 10511214
    Abstract: An oscillating motor and electric clippers. The oscillating motor includes a U-shaped magnetic yoke, four permanent magnets and a swing arm. The U-shaped magnetic yoke causes end faces of two support legs to produce alternating magnetic poles with the control circuit. The four permanent magnets are fixedly mounted to an inner arm via a second magnetic yoke. The four permanent magnets are sequentially distributed on a same circumferential surface having a fulcrum being a centre of rotation. The polarities of radial end faces of the first permanent magnet and the fourth permanent magnet are the same. The polarities of radial end faces of the second permanent magnet and the third permanent magnet are the same, and the opposite of the polarity of the radial end face of the first permanent magnet. When a coil is electrified, the four permanent magnets produce torque having the same direction of rotation.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: December 17, 2019
    Inventor: Jiankun Hu
  • Patent number: 10505415
    Abstract: An interior permanent magnet electric machine includes a stator having a plurality of teeth disposed around a circumference oriented radially towards a center defining slots interposed between each of the teeth, and a conductive winding wrapped around at least one of the teeth of the stator to receive an electrical current. The electric machine also includes a rotor which is rotatable relative to the stator. The rotor defines a plurality of openings configured to hold permanent magnets near an outer portion of the rotor and a number of spokes interposed between mass reduction cutouts located closer to a center of the rotor relative to the permanent magnets. Each of the permanent magnets defines a magnetic pole and each of the spokes is circumferentially aligned with one of the magnetic poles.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: December 10, 2019
    Assignee: GM Global Technology Operations LLC
    Inventors: Lei Hao, Chandra S. Namuduri, Murali Pandi, Thomas W. Nehl
  • Patent number: 10396610
    Abstract: A laminated core arrangement for an electric machine includes a laminated core having at least two part cores which are arranged in an axial direction. Each of the part cores has a plurality of polygonal individual sheets, with at least one of the individual sheets being round and disposed between the part cores. The at least one round individual sheet has a diameter which is less than or equal to an inner circle of the polygonal individual sheets. Permanently-excited magnets are disposed around a circumference of the laminated core.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: August 27, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventor: Andreas Männl
  • Patent number: 10374483
    Abstract: A multi-axis gimbal assembly includes a spherical armature, a first coil, a second coil, a third coil, a bracket, a stator, and a motor. The spherical armature has first, second, and third perpendicularly disposed axes of symmetry. The first coil is wound about the first axis of symmetry, the second coil is wound about the second axis of symmetry, and the third coil is wound about the third axis of symmetry. The bracket is rotationally coupled to the spherical armature to allow relative rotation between the spherical armature and bracket around only the first axis of symmetry. The stator is rotationally coupled to the bracket to allow relative rotation between the stator and bracket around only the second axis of symmetry. The motor is coupled to the stator and is configured to simultaneously rotate the stator, the bracket, and the spherical armature around the third axis of symmetry.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: August 6, 2019
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Jason Dai, Pablo Bandera, Peter Yang, Yonghui Zhang, Jing Wang, Qiang Li
  • Patent number: 10374474
    Abstract: It has been discovered that torque ripples can be reduced by adopting a shape in which: the width of a shoe connection formed in a stator of a permanent magnet motor is equal to or smaller than the thickness of each of core pieces constituting a stator core; and a relationship of 0.7?Wm/(Tm×Gm)?3.3 is satisfied, where Wm is the length of the long side of a flat plate-shaped permanent magnet embedded in a rotor, Tm is the length of the short side of the permanent magnet, and Gm is the maximum distance from the outer circumference of the rotor to the permanent magnet.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: August 6, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yuji Takizawa, Satoru Akutsu, Masafumi Okazaki, Hiroshi Aida, Yu Hirotani, Kazumasa Ito
  • Patent number: 10326348
    Abstract: A multi-degree-of-freedom electromagnetic machine that may be operated as a motor, a generator, or a motor-generator, includes a first structure and a second structure. The first structure comprises a first conductor, a second conductor, and a third conductor, each of which follows a different trajectory. The first, second, and third conductors together form a general shape of a surface. The second structure is disposed adjacent to the first structure and includes a magnet that emanates a magnetic field. The magnet has at least one of its magnetic poles facing the surface. A Lorentz force affects relative movement between the first structure and the second structure when the magnetic field that emanates from the at least one magnetic pole interacts with electrical currents within any of the electrical conductors.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: June 18, 2019
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Pablo Bandera, Hans Roth, Mark A. Carson
  • Patent number: 10280899
    Abstract: The invention relates to an arrangement (10) for feeding electrical energy into an energy supply system (100). The invention provides that the arrangement has a generator (20) with electrically isolated winding systems (30), the arrangement has at least two frequency converters (40, 41, 42) with isolated intermediate circuits (60), wherein each frequency converter is connected directly or indirectly to a winding system (30) of the generator, the arrangement has at least one control device (80), to which the frequency converters are connected for actuation thereof, and the frequency converters, on actuation by the control device, feed current by means of a voltage with a multi-level characteristic into the energy supply system (100).
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: May 7, 2019
    Assignee: VENPOWER GMBH
    Inventors: Christian Eichert, Stefan Kolb
  • Patent number: 10199890
    Abstract: A rotor core is configured by arranging divided rotor cores coaxially so as to be in close contact with each other such that magnetic pole centers are aligned axially, auxiliary grooves are recessed into respective outer circumferential surfaces of the divided rotor cores between respective magnetic poles so as to have plane symmetry relative to a plane that includes a center position between the magnetic poles and a central axis of the divided rotor cores, and so as to extend from a first axial end to a second axial end of the divided rotor cores, the auxiliary grooves recessed into an outer circumferential surface of an identical divided rotor core have an identical groove shape, and groove widths of the auxiliary grooves are set such that predetermined orders of harmonic components of cogging torque that result from each of the divided rotor cores mutually cancel each other out.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: February 5, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shinsuke Kayano, Masaya Inoue, Shinji Nishimura
  • Patent number: 10122231
    Abstract: Each of permanent magnets includes a magnet body formed across the radial direction of a rotor core, and a pair of magnet end parts bending toward the outer peripheral side of the magnet body and extending respectively from both ends of the magnet body in the peripheral direction toward the outer edge of the rotor core. Magnetization directions of the magnet end parts and a magnetic pole center line intersect with each other on the outer peripheral side of the magnet body. The inclination angle of each magnetization direction of the magnet end parts with respect to the magnetic pole center line is greater than the inclination angle of a magnetization direction of the magnet body with respect to the magnetic pole center line.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: November 6, 2018
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Nobuyuki Kifuji, Yoshiki Yasuda, Yoshinari Asano, Yasuhiko Ohsawa
  • Patent number: 10090743
    Abstract: In an interior permanent magnet motor, a magnet insertion hole of a rotor core is curved into an arc shape, and a convex portion side of the arc shape is arranged on a center side of a rotor. The magnet insertion hole has a first line, a second line, and a pair of third lines. The first line is located on the radially outer side of the second line. Each of the third lines connects the first line and the second line to each other. The first line includes an arc portion and a pair of concave portions. Each of the concave portions is located at an end of the arc portion of the first line.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: October 2, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masahiro Nigo, Kazuhiko Baba, Kazuchika Tsuchida
  • Patent number: 9991754
    Abstract: A permanent magnet 21 is housed in a magnet housing aperture 20, an adhesive is disposed only between an outside wall surface 20a that is positioned on a radially outer side of an inner wall surface of the magnet housing aperture 20 and an outside surface 21a that is positioned on a radially outer side of a surface of the permanent magnet 21 such that the permanent magnet 21 is fixed so as to be closer to the outside wall surface 20a, and a cooling flow channel 23 through which a coolant is made to flow is formed by an inside surface 21b that is positioned on a radially inner side of the surface of the permanent magnet 21 and an inside wall surface 20b that is positioned on a radially inner side of the inner wall surface of the magnet housing aperture 20.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: June 5, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masaki Horii, Masaya Inoue, Yoshiaki Kitta
  • Patent number: 9970441
    Abstract: A device for generating electrical power, the device comprising a scroll expander with first and second scrolls configured to move relative to each other when a fluid is provided to an inlet at a higher pressure than a pressure at an outlet. The first scroll is configured to provide a magnetic field and the second scroll comprises one or more conductors in which electric currents are induced when the first and second scrolls move relative to each other.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: May 15, 2018
    Assignee: The University of Warwick
    Inventors: Jihong Wang, Xing Luo
  • Patent number: 9928956
    Abstract: In permanent magnets formed by division, a cut-out part is provided in a straight line in the matrix of the permanent magnets, a metal increasing the coercive force the permanent magnet matrix is diffused into the interior of the matrix from a surface that includes the surface of the cut-out part of the permanent magnet matrix, and the permanent magnet matrix is divided into multiple permanent magnet parts along the straight cut-out part to form the permanent magnets. An Nd—Fe—B sintered magnet may be used as the permanent magnet matrix, and dysprosium (Dy) may be used as the metal increasing the coercive force of the permanent magnet. Multiple indentations disposed in a straight line may be used as the cut-out parts, or a straight groove may also be used.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: March 27, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Makoto Kitahara
  • Patent number: 9829981
    Abstract: A haptic actuator is disclosed. The haptic actuator comprises a magnet, a conductor set apart from the magnet by a gap, and an actuator coupled to the magnet. The actuator is configured to move the magnet between a first position in which the conductor is subjected to, from the magnet, a first net magnetic flux having a first direction, and a second position in which the conductor is subjected to, from the magnet, a second net magnetic flux having a second direction different than the first direction.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: November 28, 2017
    Assignee: APPLE INC.
    Inventor: Qigen Ji
  • Patent number: 9787145
    Abstract: Provided is a power generation device using magnetic force, the power generation device comprising: a plurality of tunnel-type bodies having unilateral open passages and arranged and fixed at the same intervals on a revolutional orbit, wherein the respective tunnel-type bodies are provided with a plurality of permanent magnets between inner magnetic bodies and outer magnetic bodies, and permanent magnets and the outer magnetic bodies are attached to the outer surface of the inner magnetic bodies such that the permanent magnets facing the inner and outer magnetic bodies can have opposite polarities, thereby forming magnetic fields in inner body spaces; and magnetic border membranes having opposite magnetic poles on the inner and outer sides thereof and formed on entrance sides and exit sides of the tunnel-type bodies.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: October 10, 2017
    Inventors: Seong-Ryong Baek, Song-I Baek, Shin-Young Baek, Se-Ra Baek, Yung Baek
  • Patent number: 9780613
    Abstract: A rotor includes a rotor core, a plurality of permanent magnets, and a rotating shaft. The rotor core includes a through-hole, an inner circumference-side rotor core, an outer circumference-side rotor core, an annular portion, a plurality of inner circumference-side ribs, and a plurality of outer circumference-side ribs. The through-hole is provided on a first inner circumference side of magnet insertion holes. The inner circumference-side rotor core is located on a second inner circumference side of the through-hole. The outer circumference-side rotor core is located on an outer circumference side of the through-hole. The annular portion has a substantially annular shape, and is being provided inside the through-hole. The plurality of inner circumference-side ribs connect the inner circumference-side rotor core and the annular portion and are provided at predetermined intervals in a circumferential direction.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: October 3, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Tadashi Yamaguchi, Masashi Inoue, Yoshihisa Matsuoka
  • Patent number: 9716410
    Abstract: The rotor comprises of a plurality of alternating north poles (N) and south poles (S) formed from a plurality of permanent magnets (3) having a radial polygonal section and arranged in first recesses (4). These first recesses extend axially and are distributed regularly between a circumferential portion (5) and a central portion (6) of the magnetic mass (2) of the rotor in such a way as to define a plurality of circumferential polar sections (10). The radial section comprises a substantially rectangular portion (8) next to the circumferential portion adjacent to a substantially trapezoidal portion (7) next to the central portion. The rotor has a ratio (R) between a first height (h) of the trapezoidal portion and a second height (H) of the rectangular portion, in a radial direction, is predetermined in such a way as to maximize the efficiency of the electric machine.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: July 25, 2017
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Jerome Legranger, Jean-Claude Matt, Lilya Bouarroudj, Frederic Palleschi
  • Patent number: 9641054
    Abstract: A component includes magnet elements adjoined to each other to form an arced segmented magnet section that is configured to fit in an a curved rotor slot gap of an electric machine. An electric machine that employs the component and method of assembly of the component are also disclosed. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: May 2, 2017
    Assignee: General Electric Company
    Inventors: Alexander Felix Fiseni, Mohamed Osama, Francesco Papini
  • Patent number: 9605656
    Abstract: A rotor assembly for an electromechanical transducer is provided. The rotor assembly comprises a mechanical support structure and a magnet arrangement having a first magnetic component part and a second magnetic component part. The first magnetic component part and the second magnetic component part are attached to the mechanical support structure and are arranged along an axial direction (Z) of the rotor assembly. With respect to the axial direction a first cross section of the first magnetic component part has a first shape and a second cross section of the second magnetic component part has a second shape being different from the first shape. It is further described an electromechanical transducer and a wind turbine, which are both equipped with such a rotor assembly.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: March 28, 2017
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Lijian Wu, Zi-Qiang Zhu
  • Patent number: 9515528
    Abstract: A permanent magnet rotary electric machine includes: a stator in which a plurality of teeth and a plurality of slots are formed on an inner periphery of a cylindrical stator core, and a winding wire is wound around the teeth so as to be disposed in the slots; and a rotor disposed in a hollow portion of the stator with an air gap between the rotor and the stator. In the rotor, 2n or more (n is a natural number equal to or larger than 1) radial projections are provided on an outer periphery of a rotor core, and a ferrite magnet is disposed between adjacent projections. A radial height of the projection is less than a thickness of middle of the ferrite magnet.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: December 6, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shinichi Yamaguchi, Yoshiki Maeda, Kazuaki Ando, Koki Naka, Masaya Harakawa
  • Patent number: 9490685
    Abstract: The problem is to provide an axial gap motor using non-rare-earth magnets, as an axial gap motor capable of suppressing reduction in magnet torque and increasing reluctance torque.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: November 8, 2016
    Assignee: National University Corporation Hokkaido University
    Inventors: Masatsugu Takemoto, Satoshi Ogasawara
  • Patent number: 9479017
    Abstract: A rotor for a permanent magnet synchronous machine. A first layer of cavities formed circumferentially within the rotor core structure. Pairs of the cavities in the first layer form V-shaped configurations and are spaced circumferentially about the rotor core structure in the first layer. A second layer of cavities is formed circumferentially within the rotor core structure. Pairs of the cavities in the second layer form V-shaped configurations and are spaced circumferentially about the rotor core structure in the second layer. A first set of permanent magnets is inserted within each cavity in the first layer and a second set of permanent magnets inserted within each cavity in the second layer. Each respective V-shaped configuration of the second layer having permanent magnets disposed therein extend greater than half a radial distance from the outer cylindrical wall to the inner cylindrical wall.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: October 25, 2016
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Lei Hao, Thomas W. Nehl
  • Patent number: 9479038
    Abstract: In one embodiment, an apparatus includes a first member that supports a magnetic flux carrying member and a second member that supports a magnetic flux generating member disposed for movement relative to the first member. An air gap control system is coupled to at least one of the first member or the second member and includes an air gap control device that is separate from a primary magnetic flux circuit formed between the first member and the second member. The air gap control device is configured to exert a force on one of the first and second members in response to movement of the other of the first and second members in a direction that reduces a distance between the first and second members to maintain a minimum distance between the first and second members and/or substantially center the one of the first and second members within the other.
    Type: Grant
    Filed: January 3, 2013
    Date of Patent: October 25, 2016
    Assignee: Boulder Wind Power, Inc.
    Inventors: James S. Smith, Matthew B. Jore, Michael A. Kvam, David Samsel, Charles Perry Butterfield, Brian J. Sullivan, James David Duford
  • Patent number: 9350219
    Abstract: A purpose is to provide a rotor manufacturing method including a magnet assembly formed of divided permanent magnet pieces to enhance insulation and advance cost reduction. The rotor manufacturing method includes forming permanent magnet pieces by dividing a permanent magnet, arranging and resin-molding the permanent magnet pieces to form a magnet assembly, and placing the magnet assembly in a rotor. The method includes placing the permanent magnet pieces all together in a molding die for use in resin-molding, and moving the permanent magnet pieces by a moving device provided in the molding die to move the permanent magnet pieces within the molding die, thereby forming the magnet assembly.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: May 24, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tetsuyoshi Fukaya, Yasushi Nishikuma
  • Patent number: 9343931
    Abstract: A Gaussian Surface Neodymium magnet of at least one or a plurality of spherical or any other Gaussian Surface configuration that is seated in the center of a stationary coil and whereby said magnet or plurality of magnets remains free to rotate about its axis within said coil; and whereby said magnet is capable of continuous, interrupted, or mechanically pulsed movement for the generation of electrical induced current within said stationary coil; and said magnetic field of said magnet is concentrated and focused by at least one or a plurality of focus Neodymium magnets for induced current enhancement; and whereby focus magnet fields are inline and parallel to said center rotational magnet(s).
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: May 17, 2016
    Inventors: David Deak, David Deak, Jr., Robert Happenheimer, Ronald Ranieri
  • Patent number: 9163546
    Abstract: In a power generation facility, there are provided a plurality of diesel engines, a plurality of turbochargers driven by exhaust gas from the diesel engines, a plurality of power generators connected to the plurality of turbochargers, a plurality of converters for converting AC power generated by the plurality of power generators to DC power, one inverter for converting the DC power outputted from the plurality of converters to AC power, and a main controller for controlling the converters in accordance with the AC power from the inverter, by which stable electric power can be generated.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: October 20, 2015
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yukio Yamashita, Keiichi Shiraishi, Yoshihisa Ono
  • Patent number: 9119225
    Abstract: A method includes automatically sending a request from a wireless access point to a configuration server during a power-up procedure for the wireless access point. The method includes receiving virtual private network tunnel parameters at the wireless access point from the configuration server in response to the request. The virtual private network tunnel parameters identify an access gateway. The method also includes establishing a virtual private network tunnel between the wireless access point and the centralized access gateway during the power-up procedure based on the virtual private network tunnel parameters. The virtual private network tunnel enables the wireless access point to provide one or more wireless devices access to a wide area network.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: August 25, 2015
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Rias Muhamed, Anil Kumar Doradla, David Randall Wolter
  • Publication number: 20150145370
    Abstract: A rotor core has a regular decagon base portion in its cross section relative to a shaft center and ten convex portions each of which is located between each angle of the regular decagon base portion. Each convex portion has a first convex curve having a single curvature radius. Each permanent magnet is a curved plate and has a concave curve and a second convex curve. Each permanent magnet is provided so that the concave curve adheres on the first convex curve. When each permanent magnet moves in circumferential direction relative to the rotor core, the concave curve slides on the first convex curve of the rotor core. A position of the smallest gap clearance between the second convex curve and the stator does not change. A magnetic-flux-strength maximum position is not changed easily.
    Type: Application
    Filed: November 21, 2014
    Publication date: May 28, 2015
    Inventor: Makoto TANIGUCHI