Invention Grant
US08368273B2 Rotary electric machine with air gaps configured to cancel torque pulsations
有权
具有气隙的旋转电机被配置成消除扭矩脉动
- Patent Title: Rotary electric machine with air gaps configured to cancel torque pulsations
- Patent Title (中): 具有气隙的旋转电机被配置成消除扭矩脉动
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Application No.: US13548447Application Date: 2012-07-13
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Publication No.: US08368273B2Publication Date: 2013-02-05
- Inventor: Noriaki Hino , Yutaka Matsunobu , Shinji Sugimoto , Akinori Kamiya
- Applicant: Noriaki Hino , Yutaka Matsunobu , Shinji Sugimoto , Akinori Kamiya
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Crowell & Moring LLP
- Priority: JP2008-053572 20080304
- Main IPC: H02K21/12
- IPC: H02K21/12

Abstract:
A rotary electric machine includes a stator having stator windings; and a rotor rotatably disposed in the stator, said rotor having a rotor core provided with a plurality of magnets and a plurality of magnetic auxiliary salient poles formed between poles of the magnets. In this rotary electric machine: a magnetic air gap is provided in an axial direction of the rotor in a position shifted in a circumferential direction from a q axis passing through a center of the magnetic auxiliary salient pole within the magnetic auxiliary salient pole; and an amount of shifting the magnetic air gap from the q axis in the circumferential direction differs according to a position of the magnetic air gap in the axial direction so as to cancel torque pulsation in energization caused due to the magnetic air gap.
Public/Granted literature
- US20120274160A1 ROTARY ELECTRIC MACHINE WITH AIR GAPS CONFIGURED TO CANCEL TORQUE PULSATIONS Public/Granted day:2012-11-01
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