Title:
STATOR HAVING COIL STRUCTURE OF DISTRIBUTED WINDING, AND THREE-PHASE AC ELECTRIC MOTOR COMPRISING SAID STATOR
Document Type and Number:
WIPO Patent Application WO/2021/220916
Kind Code:
A1
Abstract:
A three-phase AC electric motor in which the value obtained by dividing the number of slots by the number of poles is an irreducible fraction, wherein there is implemented a stator having a lap-winding coil structure of a distributed winding that can be wound automatically. A stator 1 of a fractional-slot-type three-phase AC electric motor in which the number of slots 2 positioned in the circumferential direction is more than 1.5 times the number of poles, and in which the value obtained by dividing the number of slots by the number of poles is an irreducible fraction, the stator 1 being such that each of two or three coils 4 having the same coil pitch comprises a plurality of sets of coils that are offset for each slot pitch and that are positioned inside the slots 2, and each of the plurality of sets of coils is positioned at a location mutually offset by 60 degrees in the circumferential direction.
Inventors:
ITO TAKASHI (JP)
Application Number:
PCT/JP2021/016210
Publication Date:
November 04, 2021
Filing Date:
April 21, 2021
Export Citation:
Assignee:
FANUC CORP (JP)
International Classes:
H02K3/04; H02K3/28
Domestic Patent References:
| WO2015128964A1 | 2015-09-03 | |||
| WO2016174730A1 | 2016-11-03 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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