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公开(公告)号:US20240291330A1
公开(公告)日:2024-08-29
申请号:US18426278
申请日:2024-01-29
Applicant: ENEDYM INC.
Inventor: Ehab Sayed , Berker Bilgin
CPC classification number: H02K1/146 , H02K1/16 , H02K2201/06 , H02K2213/03
Abstract: A switched reluctance motor. The motor includes a first member having a plurality of teeth arranged in a plurality of phase groups, each phase group including two teeth mechanically joined together through a magnetically permeable bridge. The motor also includes a second member mounted adjacent the first member allowing relative movement between the first and second members, the second member having a plurality of teeth evenly spaced from one another by a pitch in a direction of relative movement between the first and second members. Each phase group includes a first tooth and a second tooth which is separated from the first tooth by a phase group tooth spacing in the direction of relative movement between the first and second members, the phase group tooth spacing equal to a whole multiple of the pitch plus a skewing factor or a whole multiple of the pitch minus the skewing factor.
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公开(公告)号:US11936245B2
公开(公告)日:2024-03-19
申请号:US17273103
申请日:2019-09-09
Applicant: LG INNOTEK CO., LTD.
Inventor: Jung Kyu Lee
CPC classification number: H02K1/278 , H02K21/16 , H02K2201/06 , H02K2213/03
Abstract: An embodiment relates to a motor comprising: a shaft; a rotor connected to the shaft; and a stator disposed outside the rotor, wherein the rotor includes N rotor cores, and the number of holes formed through each of the N rotor cores is at least 2N. Accordingly, the motor allows the rotor to have a skew angle by using the multiple holes formed through the rotor cores.
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公开(公告)号:US20240022128A1
公开(公告)日:2024-01-18
申请号:US18349469
申请日:2023-07-10
Applicant: Atieva, Inc.
Inventor: Emad Dlala , Yateendra Deshpande , Vivek Meenakshi Sundaram
IPC: H02K1/276
CPC classification number: H02K1/276 , H02K2201/06
Abstract: An electric motor comprises: a stator having slots; and a rotor including a stack of rotor laminations, the rotor comprising: a first substack of the rotor laminations, wherein the rotor laminations in the first substack include first rivet holes and first magnet holes with first permanent magnets; and a second substack of the rotor laminations, wherein the rotor laminations in the second substack include second rivet holes and second magnet holes with second permanent magnets, and wherein an orientation of the first sub stack and the second substack relative to each other provides the rotor with a skew.
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公开(公告)号:US11757340B2
公开(公告)日:2023-09-12
申请号:US16992632
申请日:2020-08-13
Applicant: Mitsubishi Electric Corporation
Inventor: Hiroyuki Takashima , Masatsugu Nakano , Kosho Yamane , Masaya Inoue
CPC classification number: H02K29/03 , H02K1/185 , H02K1/276 , H02K7/075 , H02K7/083 , H02K21/14 , H02K2201/06 , H02K2213/03
Abstract: Provided is a rotating electric machine capable of reducing oscillations and noise generated in the rotating electric machine. The rotating electric machine includes a stator, a rotor, and a frame. The rotor includes: a rotor core; and a plurality of permanent magnets, and the rotor is divided into a plurality of blocks. The plurality of blocks include: a skew-angle-increasing pair of blocks; and a skew-angle-decreasing pair of blocks. The frame includes: a body portion configured to hold the stator; and a flange portion, which projects outward from the body portion, and the body portion has a thickness that changes from one end to another end of the body portion in an axial direction thereof.
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406.
公开(公告)号:US11670996B2
公开(公告)日:2023-06-06
申请号:US17374307
申请日:2021-07-13
Applicant: Jing-Jin Electric Technologies Co., Ltd.
Inventor: Kaihe Zhang , Liangliang Zhang , Longyu Ju
CPC classification number: H02K29/03 , H02K1/276 , H02K2201/06 , H02K2213/03
Abstract: A rotor core is provided for a step-skewing motor that includes rotor core segments mutually staggered by a preset angle. Each of the rotor core segments includes magnet slots along a circumferential direction, with a magnet provided in the magnet slot. An outer circular surface of each of the rotor core segments is provided thereon with a number of auxiliary grooves extending across the segment in an axial direction, and positions and/or cross-sectional shapes of the auxiliary grooves on the rotor core segments are not completely same so as to suppress torque ripple and vibration noise when the motor rotates.
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公开(公告)号:US20180342914A1
公开(公告)日:2018-11-29
申请号:US16037527
申请日:2018-07-17
Applicant: Hitachi Automotive Systems, Ltd.
Inventor: Yasuyuki SAITO , Hiroshi HAMANO , Ryoji KOBAYASHI , Taisuke IKEDA , Yuji KANO
IPC: H02K1/24 , H02K3/28 , B60L15/20 , B60L15/00 , B60L11/14 , B60L11/12 , H02K3/20 , H02K1/27 , H02K16/00 , H02K3/16 , H02K1/02 , H02K29/03
CPC classification number: H02K1/24 , B60L15/007 , B60L15/20 , B60L50/16 , B60L50/61 , 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 includes a stator core, a stator winding, and a rotor rotatably disposed via an air gap so as to be allowed to rotate relative to the stator core. A magnetic resistance-altering portion is provided on every other magnetic pole of magnetically-assisted salient pole members. A magnetic pole provided with the magnetic resistance-altering portion and a magnetic pole without the magnetic resistance-altering portion are alternately arranged.
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公开(公告)号:US20180254677A1
公开(公告)日:2018-09-06
申请号:US15770985
申请日:2016-10-19
Applicant: AISIN SEIKI KABUSHIKI KAISHA
Inventor: Masako SHIBAMORI , Gyoo MA , Masafumi SAKUMA
IPC: H02K1/27
CPC classification number: H02K1/2766 , H02K1/27 , H02K16/02 , H02K21/16 , H02K29/03 , H02K2201/06
Abstract: Reduction in drive torque of a permanent magnet motor having a skew arrangement is to be suppressed. A permanent magnet motor has a rotor including a rotor core formed as a stacked assembly of a plurality of electromagnetic steel sheets stacked one upon another and magnets accommodated within accommodation holes formed inside the rotor core. The rotor core has a skew arrangement including a first core and a second core that are displaced relative to each other in a circumferential direction relative to an axis of the rotor. The accommodation hole of the first core accommodates a first magnet of the magnets. The accommodation hole of the second core accommodates a second magnet of the magnets. The first magnet and the second magnet are opposed to each other via a first gap therebetween in the direction of the axis.
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公开(公告)号:US09966809B2
公开(公告)日:2018-05-08
申请号:US14646476
申请日:2013-12-25
Applicant: Nidec Corporation
Inventor: Tomoya Ueda
CPC classification number: H02K1/2773 , H02K1/276 , H02K1/278 , H02K16/005 , H02K2201/06
Abstract: A rotor of an electrical rotating machine includes a first rotor core, a second rotor core which overlaps the first rotor core in an axial direction, a non-magnetic substance layer which is interposed between the rotor cores, and a plurality of permanent magnet portions which are embedded in each rotor core. Each of the rotor cores includes a plurality of flux barrier portions and a plurality of effectual magnetic flux portions which are alternately arranged on an outer circumferential surface thereof. The flux barrier portion of the first rotor core overlaps both of a portion of the flux barrier portion of the second rotor core and a portion of the effectual magnetic flux portion of the second rotor core in the axial direction such that, in the adjacent rotor cores, the effectual magnetic flux portions do not overlap each other in the axial direction.
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公开(公告)号:US20180123434A1
公开(公告)日:2018-05-03
申请号:US15857373
申请日:2017-12-28
Applicant: ASMO CO., LTD.
Inventor: Yoshiaki TAKEMOTO , Yusuke MORIMOTO , Masashi MATSUDA , Seiya YOKOYAMA
CPC classification number: H02K16/00 , H02K1/145 , H02K1/243 , H02K1/2713 , H02K3/525 , H02K3/528 , H02K15/022 , H02K21/048 , H02K21/145 , H02K2201/06
Abstract: A rotor with four axially stacked rotor cores, and a plurality of field magnets interposed between them. Each rotor core includes a rotor-side claw-shaped magnetic pole. Each rotor-side claw-shaped magnetic poles are respectively extending from and formed on each rotor core at equal angle intervals. Tip end surfaces of the first and third rotor-side claw-shaped magnetic pole abut against or are closely opposed to each other axially. Tip end surfaces of the second and fourth rotor-side claw-shaped magnetic poles abut against or are closely opposed to each other in the axial direction. The plurality of field magnets are magnetized in the axial direction such that the field magnets causes the first and third rotor-side claw-shaped magnetic poles to function as first magnetic poles, and cause the second and fourth rotor-side claw-shaped magnetic poles to function as second magnetic poles.
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