公开(公告)号：US20180226849A1

公开(公告)日：2018-08-09

申请号：US15943353

申请日：2018-04-02

Applicant: Siemens Aktiengesellschaft

Inventor： Andreas Männl

IPC: H02K1/27

CPC classification number: H02K1/278 ,  H02K1/2706 ,  H02K1/274 ,  H02K1/2753 ,  H02K2201/06

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.

公开(公告)号：US10003227B2

公开(公告)日：2018-06-19

申请号：US14788946

申请日：2015-07-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Sinisa Jurkovic ,  Mohammad Faizul Momen ,  Khwaja M. Rahman

IPC: H02K1/27 ,  H02K29/03

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

Abstract: An interior permanent magnet machine includes a rotor having a central axis and a plurality of axial segments. The axial segments include a first axial segment and a second axial segment positioned adjacent to each other in an axial direction. Each of the axially-spaced segments includes at least one pole defining a respective angular configuration characterized by respective first, second and third angles. The first axial segment defines a first set of angular configurations and the second axial segment defines a second set of angular configurations. The rotor is configured to have an axially asymmetric configuration such that the first set of angular configurations is different from the second set of angular configurations.

公开(公告)号：US09941775B2

公开(公告)日：2018-04-10

申请号：US14085953

申请日：2013-11-21

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Alexander Felix Fiseni ,  Kum-Kang Huh ,  Mohamed Osama ,  Francesco Papini

IPC: H02K1/26 ,  H02K1/27 ,  H02K1/28 ,  H02K15/03 ,  H02K29/03 ,  H02K29/12 ,  H02K1/22 ,  H02K1/24 ,  H02K3/20

CPC classification number: H02K15/03 ,  H02K1/223 ,  H02K1/246 ,  H02K1/28 ,  H02K3/20 ,  H02K29/03 ,  H02K29/12 ,  H02K2201/06 ,  Y10T29/49012

Abstract: An assembly includes multiple adjoined rotor sections each having multiple poles and multiple void rows therethrough that are radially distributed in each of the poles. The rotor sections are skewed in a circumferential direction. The assembly also has multiple conductive rings that substantially surround one of the void rows. A method of assembly and electric machines and vehicles using the assembly are also disclosed. Aspects reduce torque ripple in electric machines and allow for encoderless/sensorless operation in an electric machine using the rotor assembly. 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.

公开(公告)号：US09912204B2

公开(公告)日：2018-03-06

申请号：US14434865

申请日：2013-12-09

Applicant: Mitsubishi Electric Corporation

Inventor： Eigo Totoki ,  Toshinori Tanaka ,  Tomoya Tachibana

IPC: H02K1/27

CPC classification number: H02K1/278 ,  H02K1/276 ,  H02K2201/06

Abstract: In conventional rotors having a shape in which permanent magnets are skewed, a configuration in which, for example, the thicknesses of both ends of each magnet are increased is used in order to make the rotors symmetric between the forward and reverse directions, thereby causing excessive increase in the thicknesses.In a rotor 2 in which permanent magnets form magnet poles and the permanent magnets are skewed with respect to the axial direction, the thickness of each permanent magnet is increased at a portion that is most likely to be demagnetized, that is, a positive side portion F in a rotor part 2A skewed in the positive direction and a negative side portion F in a rotor part 2B skewed in the negative direction, whereby a demagnetization resistance strengthened portion is formed.

公开(公告)号：US20170331337A1

公开(公告)日：2017-11-16

申请号：US15528398

申请日：2016-03-31

Applicant: THE SWITCH DRIVE SYSTEMS OY

Inventor： Panu KURRONEN ,  Markus SILVENTOINEN ,  Jussi PURANEN

IPC: H02K1/27 ,  F01D5/06 ,  H02K21/02 ,  H02K16/02 ,  H02K1/28 ,  B63H23/24 ,  F01D5/30

CPC classification number: H02K16/02 ,  B63H23/24 ,  B63J3/02 ,  B63J2003/002 ,  F01D5/066 ,  F01D5/3053 ,  H02K1/2753 ,  H02K1/278 ,  H02K1/28 ,  H02K1/30 ,  H02K21/029 ,  H02K2201/06 ,  H02K2213/09

Abstract: A rotor for a permanent magnet machine includes first and second axially successive rotor sections each including permanent magnets generating magnetic field having a pole pitch. The rotor includes a first coupling system for connecting the first rotor section to a shaft and a second coupling system for connecting the second rotor section to the shaft or to the first rotor section. The second rotor section is rotatable with respect to the first rotor section by an angle corresponding to the pole pitch in response to releasing the second coupling system so as to set the stator flux-linkages generated by the first and second rotor sections to be substantially zeroes. Thereafter, the permanent magnets do not substantially induce voltages on the stator windings even if the rotor is rotating during for example an internal fault of stator windings.

公开(公告)号：US09780614B2

公开(公告)日：2017-10-03

申请号：US14693502

申请日：2015-04-22

Applicant: MANDO CORPORATION

Inventor： Tae Sik Kim

IPC: H02K1/28 ,  H02K1/27 ,  H02K21/12 ,  H02K16/02 ,  H02K21/02

CPC classification number: H02K1/278 ,  H02K1/28 ,  H02K16/02 ,  H02K21/029 ,  H02K2201/06 ,  H02K2213/09

Abstract: The present invention relates to a motor. According to one embodiment of the present invention, a skew angle is changed according to a load condition so that noise and vibration can be reduced as compared to a conventional motor.

公开(公告)号：US20170229948A1

公开(公告)日：2017-08-10

申请号：US15501179

申请日：2015-07-21

Applicant: G.E.T. KOREA CO., LTD.

Inventor： Young Mok NA ,  Un Ho CHOI ,  Sang Yong JUNG

IPC: H02K16/04 ,  H02K21/14 ,  H02K1/27

CPC classification number: H02K16/04 ,  H02K1/145 ,  H02K1/2706 ,  H02K21/14 ,  H02K21/145 ,  H02K2201/06

Abstract: Disclosed is a single phase brushless direct current motor comprising a stator and a rotor which is rotatably located inside the stator, the stator comprising: a first stator core having a plurality of first core pieces which are formed to be bent from the inside; a second stator core having a plurality of second core pieces which are located between the first core pieces, respectively, and are formed to be bent from the inside; and a bobbin which is coupled between the first stator core and the second stator core, and around which a coil is wound, and the rotor comprising: a rotor body which rotates around a shaft; and a plurality of magnets which are formed on the outer circumferential surface of the rotor body, wherein the first core pieces and the second core pieces have overlapping regions which axially overlap when seen from the shaft.

公开(公告)号：US20170229933A1

公开(公告)日：2017-08-10

申请号：US15040304

申请日：2016-02-10

Applicant: Ford Global Technologies, LLC

Inventor： Franco Leonardi ,  Mark Allan Lippman ,  Michael W. Degner

IPC: H02K1/27 ,  H02K1/16

CPC classification number: H02K1/276 ,  H02K1/04 ,  H02K1/16 ,  H02K1/2766 ,  H02K21/14 ,  H02K2201/03 ,  H02K2201/06 ,  H02K2201/15

Abstract: An electric machine may include a plurality of stator sections each formed from one or more stator laminations stacked to form a stator. The stator may have windings arranged therein to form magnetic poles. The stator may surround a rotor. A diamagnetic or paramagnetic stator layer may be interposed between at least one adjacent pair of the stator sections.

公开(公告)号：US09705366B2

公开(公告)日：2017-07-11

申请号：US15126503

申请日：2015-02-24

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Toshinori Tanaka ,  Eigo Totoki ,  Ryuichi Takiguchi

IPC: H02K21/12 ,  H02K1/27 ,  H02K1/14

CPC classification number: H02K1/2706 ,  H02K1/146 ,  H02K1/276 ,  H02K1/278 ,  H02K29/03 ,  H02K2201/03 ,  H02K2201/06 ,  H02K2213/03

Abstract: R1>R2>R3 is satisfied, where R1 is a radius of curvature of a cylindrical surface that contacts circular arc-shaped curved surfaces arranged circumferentially, R2 is a radius of curvature of the circular arc-shaped curved surfaces, and R3 is a radius of curvature of an upper surface of permanent magnets, air gaps are formed on radially outer portions of two circumferential side portions of magnet housing apertures, surfaces that contact two circumferential side surfaces of the permanent magnets so as to be parallel to a radial direction are disposed on radially inner portions of the two circumferential end portions, and B2>B1 is satisfied, where B1 is a thickness of a core portion of the rotor core between the circular arc-shaped curved surfaces and the magnet housing apertures at a magnetic pole center, and B2 is a thickness of a circumferential end portion of the core portion.

公开(公告)号：US09608501B2

公开(公告)日：2017-03-28

申请号：US14650958

申请日：2012-12-13

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Shinichi Yamaguchi ,  Koki Naka ,  Kazuaki Ando

IPC: H02K3/28 ,  H02K21/14 ,  H02K3/12

CPC classification number: H02K21/14 ,  H02K3/12 ,  H02K3/28 ,  H02K2201/06 ,  H02K2213/03

Abstract: A rotary electric machine is a rotary electric machine including a stator of a distributed winding type including a plurality of first slots, in each of which winding wires of a plurality of same phases or a winding wire of one phase are arranged, and a plurality of second slots, in each of which winding wires of a plurality of different phases are arranged. The total number of turns in each of the first slots is same as one another. The total number of turns in each of the second slots is same as one another. The total number of turns in the first slot and the total number of turns in the second slot are different from each other.