Title:
DIRECT-START SYNCHRONOUS RELUCTANCE ELECTRIC MOTOR ROTOR STRUCTURE, ELECTRIC MOTOR AND COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2020/253196
Kind Code:
A1
Abstract:
Provided are a direct-start synchronous reluctance electric motor rotor structure, an electric motor, and a compressor. The direct-start synchronous reluctance electric motor rotor structure comprises: a rotor iron core, wherein q-axis squirrel-cage slots are provided in the outer peripheral surface of the rotor iron core, and the q-axis squirrel-cage slots are located at the q axis of the rotor iron core; an end portion of at least one of two slot walls, close to the outer peripheral surface of the rotor iron core, of each of the q-axis squirrel-cage slots is configured to extend towards the other slot wall, such that a snap-fit limiting space is formed between the two slot walls; and an electrically conductive but not magnetically conductive material is filled in the snap-fit limiting space. By applying the technical solution of the present application, the difference between the magnetic flux of the d axis and that of the q axis can be effectively increased; the problems of the low efficiency and low rotation speed of an asynchronous electric motor are solved; and the output power and efficiency of an electric motor with the rotor structure are improved.
Inventors:
XIAO YONG (CN)
CHEN BIN (CN)
SHI JINFEI (CN)
LI XIA (CN)
YU QINHONG (CN)
CHEN BIN (CN)
SHI JINFEI (CN)
LI XIA (CN)
YU QINHONG (CN)
Application Number:
PCT/CN2019/128074
Publication Date:
December 24, 2020
Filing Date:
December 24, 2019
Export Citation:
Assignee:
GREE ELECTRIC APPLIANCES INC ZHUHAI (CN)
International Classes:
H02K19/14; H02K1/24; H02K3/04
Foreign References:
| CN110224565A | 2019-09-10 | |||
| CN109494903A | 2019-03-19 | |||
| US20180198356A1 | 2018-07-12 | |||
| CN105490493A | 2016-04-13 | |||
| CN107994698A | 2018-05-04 | |||
| CN201910532885A | 2019-06-19 | |||
| CN103208894A | 2013-07-17 | |||
| CN1286250C | 2006-11-22 |
Other References:
See also references of EP 3926798A4
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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