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公开(公告)号：US10790734B2
公开(公告)日：2020-09-29
申请号：US16305847
申请日：2017-06-01
Applicant: DENSO CORPORATION
Inventor： Yuki Takahashi , Tomokazu Hisada
IPC: H02K21/04
Abstract: A rotor of a rotating electric machine includes a field core having a cylindrical boss portion, and a plurality of claw-shaped magnetic pole portions that are arranged on the outer side of the boss portion and form poles of alternately different polarities in the circumferential direction, a field winding that is wound around the outer periphery of the boss portion and generates a magnetomotive force by energization, a permanent magnet disposed between the circumferentially adjacent claw-shaped magnetic pole portions so as to have its easy axis of magnetization oriented in the circumferential direction and have its polarity coincide with the polarity of the claw-shaped magnetic pole portions which alternately appears by excitation, and a magnetic flux short circuit member having a short circuit portion that magnetically connects the claw-shaped magnetic pole portions circumferentially arranged to have different polarities.
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公开(公告)号：US09537361B2
公开(公告)日：2017-01-03
申请号：US14032503
申请日：2013-09-20
Applicant: DENSO CORPORATION
Inventor： Tomokazu Hisada
CPC classification number: H02K1/27 , H02K1/276 , H02K29/03 , H02K2201/06 , H02K2213/03
Abstract: A rotor is provided which includes a first rotor portion, a second rotor portion which is arranged at a position deviated from the first rotor portion by a predetermined skew angle so as to contact the first rotor portion, first magnets each of which is provided in a magnetic pole of the first rotor portion, and second magnets each of which is provided in a magnetic pole of the second rotor portion and is arranged at a position deviated from the first magnet of the first rotor portion by the predetermined skew angle. Coercive field strengths of the first magnets and coercive field strengths of the second magnets are different from each other.
Abstract translation: 提供了一种转子，其包括第一转子部分，第二转子部分，其布置在与第一转子部分偏离预定歪斜角以便接触第一转子部分的位置处，第一转子部分设置在第一转子部分中 第一转子部分的磁极和第二磁体，每个磁体设置在第二转子部分的磁极中，并且布置在偏离第一转子部分的第一磁体的位置上预定的倾斜角度。 第一磁体的强磁场强度和第二磁体的矫顽磁场强度彼此不同。
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公开(公告)号：US10958117B2
公开(公告)日：2021-03-23
申请号：US16306767
申请日：2017-06-01
Applicant: DENSO CORPORATION
Inventor： Yuki Takahashi , Tomokazu Hisada
Abstract: A vehicle alternating-current power generator includes a stator formed by winding an armature winding on a stator core and a rotor arranged on the radial inside of the stator. The rotor includes a field core having a boss part and a plurality of claw-shaped magnetic pole parts, a field winding that is wound on the outer peripheral side of the boss part, and a permanent magnet that is arranged between the circumferentially adjacent claw-shaped magnetic pole parts. A d-axis magnetic circuit formed by magnetomotive force of the field winding and at least part of first and second magnet magnetic circuits formed by magnetic force of the permanent magnet are shared. When an electrical load is connected to the rotor, the relationship between a permeance Prt of the d-axis magnetic circuit and a permeance Pst of a q-axis magnetic circuit is set to satisfy Pst>Prt.
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