US 11,942,840 B2
Self-starting synchronous reluctance motor rotor, motor, and compressor
Xia Li, Zhuhai (CN); Bin Chen, Zhuhai (CN); Jinfei Shi, Zhuhai (CN); Yong Xiao, Zhuhai (CN); and Qinhong Yu, Zhuhai (CN)
Assigned to GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI, Zhuhai (CN)
Appl. No. 17/437,262
Filed by GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI, Zhuhai (CN)
PCT Filed Dec. 24, 2019, PCT No. PCT/CN2019/128067
§ 371(c)(1), (2) Date Sep. 8, 2021,
PCT Pub. No. WO2020/253191, PCT Pub. Date Dec. 24, 2020.
Claims priority of application No. 201910532905.6 (CN), filed on Jun. 19, 2019.
Prior Publication US 2022/0173644 A1, Jun. 2, 2022
Int. Cl. H02K 19/14 (2006.01); F04B 35/04 (2006.01); H02K 1/24 (2006.01)
CPC H02K 19/14 (2013.01) [H02K 1/246 (2013.01); F04B 35/04 (2013.01); H02K 2213/03 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A self-starting synchronous reluctance motor rotor, comprising:
a rotor core provided with a plurality of slit grooves, wherein both ends of each slit groove are respectively provided with a filled groove, a first end of the filled groove is adjacent to the slit groove, and a second end of the filled groove extends outwards parallel to a d-axis of the rotor core, the second end of the filled groove is provided with at least one bevel edge, so that when a d-axis magnetic flux of the rotor core enters a stator along channels formed at the bevel edge, no abrupt change occurs to the d-axis magnetic flux,
wherein the second end of the filled groove is provided with two bevel edges, and the two bevel edges comprise:
a first bevel edge arranged on one sidewall of the filled groove far from a shaft hole of the rotor core, wherein the first bevel edge forms a first included angle with the d-axis; and
a second bevel edge arranged on one sidewall of the filled groove adjacent to the shaft hole, wherein the second bevel edge forms a second included angle with the d-axis, and
wherein the first included angle is θ1, where θ1≥135°, and the second included angle is θ2, where θ2≤170°.