Title:
ROTATING ELECTRIC MACHINE
Document Type and Number:
WIPO Patent Application WO/2018/225656
Kind Code:
A1
Abstract:
A rotating electric machine provided with a stator and a rotor which is disposed on the inside in the radial direction of the stator and opposed to the stator in the radial direction. The rotor includes: a field magnet core which includes a tubular boss portion and a plurality of nail-shaped magnetic pole portions which are disposed on the outside in the radial direction of the boss portion and formed with magnetic poles with polarities alternately varying in the circumferential direction; a field magnet winding which is wound around the outer periphery of the boss portion and generates magnetomotive force upon being energized; and a plurality of permanent magnets which are respectively disposed between two nail-shaped magnetic pole portions adjacent to each other in the circumferential direction with the magnetization easy axis of the permanent magnets oriented in the circumferential direction, and which are formed with magnetic poles so as to match the polarities appearing in the two nail-shaped magnetic pole portions due to the magnetomotive force of the field magnet winding. Magnetic resistance between the nail-shaped magnetic pole portions of each pair and the permanent magnets opposing each other in the circumferential direction is greater in a radially outside position far from the stator than in a radially inside position close to the stator.
Inventors:
KITAHARA YOSHIZUMI (JP)
TAKAHASHI YUUKI (JP)
TAKAHASHI YUUKI (JP)
Application Number:
PCT/JP2018/021239
Publication Date:
December 13, 2018
Filing Date:
June 01, 2018
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H02K19/22
Foreign References:
| JP2001197712A | 2001-07-19 | |||
| JP2014036483A | 2014-02-24 | |||
| JP2011120391A | 2011-06-16 | |||
| JP2013102641A | 2013-05-23 | |||
| JPH05207716A | 1993-08-13 | |||
| JP2009284763A | 2009-12-03 |
Attorney, Agent or Firm:
TOHDA, Kiyoshi (JP)
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