STATOR ASSEMBLY, MOTOR, AND ELECTRICAL EQUIPMENT

WIPO Patent Application WO/2023/108916

A1

The present application provides a stator assembly, a motor, and an electrical equipment. The motor comprises: a stator assembly comprising a stator core and a stator winding, wherein the stator core comprises: a stator yoke portion; stator main teeth provided on the stator yoke portion and comprising tooth shoes, the stator winding being disposed on the stator main teeth; and at least two stator auxiliary teeth provided on the tooth shoes; and a rotor assembly comprising a plurality of permanent magnet poles, the adjacent permanent magnet poles having different polarities. The number Ps of pole pairs of the stator winding satisfies that Ps=|ax±Pr|, wherein a represents the number of the stator main teeth, x represents the number of the stator auxiliary teeth on each stator main tooth, and Pr represents the number of the pole pairs of the plurality of permanent magnet poles. In the motor provided by the present application, the stator auxiliary teeth can serve as modulation components, and new harmonic components appearing in the air gap flux density can serve as working harmonics of the motor to provide an output torque for the motor, thereby effectively increasing the torque density of the motor.

GE MENG (CN)
FENG YANLI (CN)
LI WENRUI (CN)
LI HU (CN)
GAN FENG (CN)

PCT/CN2022/079094

June 22, 2023

March 03, 2022

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WELLING WUHU MOTOR MFG CO LTD (CN)
MIDEA WELLING MOTOR TECH SHANGHAI CO LTD (CN)

H02K1/14; H02K1/16; H02K1/27915; H02K3/04; H02K3/12; H02K3/28; H02K3/34

CN114069911A	2022-02-18
CN113364155A	2021-09-07
JP2012023861A	2012-02-02
CN208285086U	2018-12-25
JP2013027240A	2013-02-04

YOULINK INTELLECTUAL PROPERTY LAW FIRM (CN)

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