公开(公告)号：US09985484B2

公开(公告)日：2018-05-29

申请号：US14734580

申请日：2015-06-09

Applicant: Ford Global Technologies, LLC

Inventor： Feng Liang ,  Lusu Guo ,  Michael W. Degner

IPC: H02K1/27 ,  H02K29/03

CPC classification number: H02K1/2706 ,  H02K1/2766 ,  H02K29/03 ,  H02K2201/06

Abstract: A permanent magnet electric machine includes a rotor configured to rotate about an axis. The rotor is comprised of axially stacked sections. Each section is comprised of axially stacked laminations that define a pattern of axial grooves on an outer surface of the rotor to reduce torque ripple. The pattern is different for at least two of the sections. The pattern for each section may alternate with respect to poles of the rotor.

公开(公告)号：US20180091007A1

公开(公告)日：2018-03-29

申请号：US15830476

申请日：2017-12-04

Applicant: Hitachi Automotive Systems, Ltd.

Inventor： Yasuyuki Saito ,  Hiroshi Hamano ,  Ryoji Kobayashi ,  Taisuke Ikeda ,  Yuji Kano

IPC: H02K1/24 ,  H02K3/28 ,  B60L15/00 ,  B60L11/14 ,  B60L11/12 ,  B60L15/20 ,  H02K3/20 ,  H02K1/27 ,  H02K16/00 ,  H02K3/16 ,  H02K1/02 ,  H02K29/03

CPC classification number: H02K1/24 ,  B60L11/123 ,  B60L11/14 ,  B60L15/007 ,  B60L15/20 ,  B60L2210/40 ,  B60L2220/18 ,  B60L2220/50 ,  B60L2240/421 ,  B60L2270/145 ,  H02K1/02 ,  H02K1/2706 ,  H02K1/276 ,  H02K3/16 ,  H02K3/20 ,  H02K3/28 ,  H02K16/00 ,  H02K29/03 ,  H02K2201/06 ,  H02K2213/03 ,  Y02T10/6217 ,  Y02T10/641 ,  Y02T10/645 ,  Y02T10/7077 ,  Y02T10/7241 ,  Y02T10/7275

Abstract: A rotating electric machine, in which a cross conductors of a stator connect slot conductors so as to stride N+1 slots at coil ends on one side and stride N−1 slots at coil ends on another side, with N representing a number of slots per pole, a stator winding includes a plurality of slot conductor groups each made up with a plurality of slot conductors corresponding to a single phase, the plurality of slot conductors in each slot conductor group are inserted at a predetermined number Ns of successive slots forming a continuous range along a circumference of the stator core so that the slot conductors in the slot conductor group take successive slot positions and successive layer positions, Ns=NSPP+NL when NSPP represents a number of slots per pole per phase and a number of layers is expressed as 2×NL.

公开(公告)号：US20180083518A1

公开(公告)日：2018-03-22

申请号：US15565261

申请日：2015-05-20

Applicant: SHENZHEN GAM SHINE TECHNOLOGY CO., LIMITED

Inventor： Kenny CHEN ,  Huiming ZHANG

IPC: H02K16/02 ,  H02K1/16 ,  H02K1/27 ,  H02K1/28 ,  H02K21/14 ,  H02K3/28

CPC classification number: H02K16/02 ,  H02K1/16 ,  H02K1/276 ,  H02K1/28 ,  H02K3/28 ,  H02K21/14 ,  H02K2201/06

Abstract: The present invention provides a kind of rotor and a motor with the rotor. The rotor comprises a shaft, a magnetic yoke of rotor, several primary permanent magnet groups and several secondary permanent magnet groups. The said several primary permanent magnet groups and the said several secondary permanent magnet groups are alternatively distributed along the circumference of the said magnetic yoke of rotor at the same interval. The projection of the said primary permanent magnet group and that of the said secondary permanent magnet group on a plane vertical to the said shaft are adjacent, and their edges overlap. The present invention can reduce torque pulsation caused by the electromagnetic factors, and increase the external work of torque. Therefore, it has good effects on improving power efficiency of the motor and saving energy.

公开(公告)号：US09906082B2

公开(公告)日：2018-02-27

申请号：US14313380

申请日：2014-06-24

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Francesco Papini ,  Alexander Felix Fiseni ,  Mohamed Osama ,  Manoj Ramprasad Shah

IPC: H02K1/28 ,  H02K1/24 ,  H02K1/27 ,  H02K1/30

CPC classification number: H02K1/246 ,  H02K1/2766 ,  H02K1/30 ,  H02K2201/06 ,  Y10T29/49012

Abstract: A component that includes a longitudinal axle, having a multiple keybars that extend outward from a surface of the axle, such that each of the keybars are disposed axially along and circumferentially around the axle. Also the axis of the keybars is parallel to the axle, such that a profile of all midpoints of the keybars is helicoidal around the axle, also the helicoidal profile is such that they make up one or more helicoidal paths. The profile may be herringbone skewed. The component may be part of a rotor assembly that is part of an electric machine such as an interior permanent magnet (IPM) or Synchronous Reluctance motor.

公开(公告)号：US20180048198A1

公开(公告)日：2018-02-15

申请号：US15730129

申请日：2017-10-11

Applicant: Hitachi Automotive Systems, Ltd.

Inventor： Yasuyuki SAITO ,  Tsuyoshi GOTO ,  Kenichi NAKAYAMA ,  Noriaki HINO ,  Shinji SUGIMOTO

IPC: H02K1/27 ,  H02P27/06 ,  B60L11/12 ,  B60L11/14 ,  H02K1/24 ,  B60L15/20 ,  H02K7/00 ,  B60L15/02 ,  B60K1/02 ,  H02K29/03 ,  B60L15/00 ,  B60K6/445 ,  B60K6/26

CPC classification number: H02K1/276 ,  B60K1/02 ,  B60K6/26 ,  B60K6/445 ,  B60L11/123 ,  B60L11/14 ,  B60L15/007 ,  B60L15/025 ,  B60L15/20 ,  B60L2210/10 ,  B60L2210/40 ,  B60L2220/14 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/429 ,  B60L2240/443 ,  B60L2240/547 ,  B60L2240/549 ,  B60L2270/142 ,  B60L2270/145 ,  H02K1/24 ,  H02K1/2766 ,  H02K7/006 ,  H02K29/03 ,  H02K2201/06 ,  H02P27/06 ,  Y02T10/6217 ,  Y02T10/6239 ,  Y02T10/641 ,  Y02T10/643 ,  Y02T10/7077 ,  Y02T10/7216 ,  Y02T10/7241 ,  Y02T10/7275

Abstract: A rotating electric machine includes a stator having a stator coil and a rotor provided rotatably around a specific rotation axis with respect to the stator. The rotor includes a plurality of magnets, a plurality of magnetically-assisted salient pole members provided between poles of any adjacent two magnets from among the plurality of magnets, and a magnetoresistance variation unit provided in the magnetically-assisted salient pole member along an axial direction of the rotation axis at a position offset in a circumferential direction of the rotation axis from a q-axis passing through a salient pole center of the magnetically-assisted salient pole member. The amount of offset of the magnetoresistance variation unit from the q-axis varies depending on positions of the magnetically-assisted salient pole members so that torque fluctuations cancel each other when power is applied.

公开(公告)号：US09893578B2

公开(公告)日：2018-02-13

申请号：US14693249

申请日：2015-04-22

Applicant: Baker Hughes Incorporated

Inventor： James C. Clingman ,  Chad A. Craig

IPC: H02K1/27 ,  H02K1/28 ,  H02K5/132

CPC classification number: H02K1/276 ,  H02K5/132 ,  H02K2201/06

Abstract: Systems and methods for constructing electric motors in which rotor sections are individually keyed to a rotor shaft such that, in a resting position, the rotor sections are circumferentially shifted (“clocked”) with respect to each to mitigate effects of harmonic feedback, torsional flexibility and the like. In one embodiment, a system includes an electric drive, and an ESP coupled to it by a power cable. The ESP motor has a rotor in which multiple permanent-magnet rotor sections are mounted to a shaft. Within each rotor section, permanent magnets are positioned in two or more axially aligned rows. Adjacent rotor sections are clocked with respect to each other so that, in operation, the rows of permanent magnets in the different rotor sections are positioned to counter the harmonic feedback or to use torsional deflection to equalize torque contributions from the different rotor sections.

公开(公告)号：US20180019630A1

公开(公告)日：2018-01-18

申请号：US15716688

申请日：2017-09-27

Applicant: Bühler Motor GmbH

Inventor： Matthias Ahrens ,  Olaf Richter ,  Georg Bernreuther ,  Nikolaus Dietrich ,  Arnold Scheer

IPC: H02K1/27 ,  H02K15/12 ,  H02K1/28 ,  H02K15/03 ,  H02K1/02 ,  H02K1/04

CPC classification number: H02K1/276 ,  H02K1/02 ,  H02K1/04 ,  H02K1/2786 ,  H02K1/28 ,  H02K15/03 ,  H02K15/12 ,  H02K2201/06

Abstract: A permanent magnet rotor of an electric motor, consisting of a return body and a number of sintered permanent magnets distributed on the case of the return body at intervals, connected to a plastic mass filled with hard magnetic material. The objective of the present invention is to ensure that a generic permanent magnet rotor can be simply and economically produced, along with allowing a great degree of freedom regarding the design of the pole faces, wherein high rigidity and security of the mechanical connection between the permanent magnets and the return body are guaranteed.

公开(公告)号：US20170346353A1

公开(公告)日：2017-11-30

申请号：US15538065

申请日：2015-11-18

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Junji KITAO ,  Moriyuki HAZEYAMA ,  Yoshihiro MIYAMA ,  Takeshi MORI ,  Akihiro DAIKOKU

IPC: H02K1/16 ,  H02P21/06 ,  H02K1/27 ,  H02P27/06 ,  H02P21/14 ,  H02K29/03 ,  H02P29/66

CPC classification number: H02K1/16 ,  H02K1/146 ,  H02K1/276 ,  H02K1/2766 ,  H02K29/03 ,  H02K2201/06 ,  H02P21/06 ,  H02P21/141 ,  H02P25/22 ,  H02P27/06 ,  H02P29/662

Abstract: Given a first intersection point of the surface of a rotor and a straight line that joins a central point of a permanent magnet on a stator side and a tooth tip section closest to the central point of the permanent magnet on the stator side, a flange is formed outward of an arc having, as the radius thereof, a distance from a second intersection point of the inner peripheral face of the stator and a straight line that joins the rotation axis of the rotor and the first intersection point, up to the tooth tip section.

公开(公告)号：US20170288482A1

公开(公告)日：2017-10-05

申请号：US15469913

申请日：2017-03-27

Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI

Inventor： Noriyuki SUZUKI ,  Yoshiyuki NAKANE

IPC: H02K1/27 ,  H02K21/04 ,  H02K21/12 ,  H02K1/28

CPC classification number: H02K1/2706 ,  H02K1/2766 ,  H02K1/28 ,  H02K21/046 ,  H02K21/12 ,  H02K2201/06

Abstract: A permanent magnet type rotating electrical machine includes a stator, a rotor core having first and second magnet inserting holes, and permanent magnets. A partition wall is defined between a first end of each of the first magnet inserting holes and a second end of the associated one of the second magnet inserting holes. In a section radially outward of the first and second ends, a bulging portion is arranged between a surface extending along the permanent magnet in the magnet inserting hole and a surface of the partition wall. The bulging portion has a first curved surface continuous with the surface of the partition wall and a second curved surface continuous with the surface extending along the permanent magnet in the first magnet inserting hole or the second magnet inserting hole. The curvature of the first curved surface is smaller than the curvature of the second curved surface.

公开(公告)号：US20170237326A1

公开(公告)日：2017-08-17

申请号：US15506114

申请日：2015-09-02

Applicant: Beremundo Elsio Cicilia

Inventor： Beremundo Elsio Cicilia

IPC: H02K21/24

CPC classification number: H02K21/24 ,  H02K2201/06

Abstract: The present invention provides a device comprising a housing; a shaft mounted rotatably in or on the housing and having at least one shaft end extending through a side wall of the housing; one, two or more magnetic segments coupled to the rotatable shaft and comprising first magnets; and second magnetic segments which are coupled to the housing and extend between the first magnetic segments in radial direction and which are provided with second magnets, wherein the first magnets are electromagnets and the second magnets are permanent magnetic segments, or vice versa.