Title:
ROTARY ELECTRICAL MACHINE
Document Type and Number:
WIPO Patent Application WO/2022/097322
Kind Code:
A1
Abstract:
A rotary electrical machine according to an aspect of the present invention comprises: a rotor having a plurality of magnets; and a stator having a plurality of teeth arranged apart from each other side by side so as to extend radially inward from a core back. The magnets include a pair of first magnets, and a second magnet which is disposed at a circumferential position between the first magnets and which extends in a direction perpendicular to the radial direction when viewed in an axial direction. When viewed in the axial direction, the length of the second magnet in the radial direction is shorter than that of each of the first magnets in a direction perpendicular to the direction in which the first magnets extend. In a state where the circumferential-direction center of the second magnet is disposed at the same circumferential-direction position as that of the circumferential-direction center of a given one tooth, both ends of the second magnet in the circumferential direction are each positioned between the circumferential-direction center of a tooth disposed next to the given tooth and the circumferential-direction center of a slot disposed second next to the given one tooth on the same side as that of the tooth disposed next to the given one tooth.
Inventors:
TANAKA JUNYA (JP)
WATAHIKI MASANORI (JP)
UEDA TOMOYA (JP)
WATAHIKI MASANORI (JP)
UEDA TOMOYA (JP)
Application Number:
PCT/JP2021/022340
Publication Date:
May 12, 2022
Filing Date:
June 11, 2021
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
H02K1/27; H02K1/22
Domestic Patent References:
| WO2018159181A1 | 2018-09-07 |
Foreign References:
| JP2008306849A | 2008-12-18 | |||
| JP2012161227A | 2012-08-23 | |||
| JP6685634B1 | 2020-04-22 | |||
| JP2018026965A | 2018-02-15 | |||
| JP2011097754A | 2011-05-12 |
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