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Title:
ROTOR STRUCTURE, PERMANENT MAGNET-ASSISTED SYNCHRONOUS RELUCTANCE MOTOR, AND ELECTRIC VEHICLE
Document Type and Number:
WIPO Patent Application WO/2019/174313
Kind Code:
A1
Abstract:
A rotor structure, a permanent magnet-assisted synchronous reluctance motor, and an electric vehicle. The rotor structure comprises a rotor body (10); the rotor body (10) is provided with magnetic steel groove sets; the magnetic steel groove set comprises an inner magnetic steel groove (12); the inner magnetic steel groove (12) comprises a first inner magnetic steel groove section (121), a second inner magnetic steel groove section (122), and a third inner magnetic steel groove section (123) which are provided in sequence; the second inner magnetic steel groove section (122) has an arc-shaped structure; the arc of the second inner magnetic steel groove section (122) protrudes towards the side of a rotating shaft hole (13) of the rotor body (10); the second inner magnetic steel groove section (122) is symmetrical with respect to a direct axis of the rotor body (10); end sidewall extension lines of both ends of the second inner magnetic steel groove section (122) intersect the direct axis at point Q. By configuring that the end sidewall extension lines of both ends of the second inner magnetic steel groove section (122) intersect the direct axis of the rotor body (10) at point Q, the inductance intensity of q-axis of the motor is increased, the motor efficiency is improved, the motor torque ripple is reduced, the motor vibration and noise are reduced, and the motor demagnetization resistance capability is improved.

Inventors:
CHEN BIN (CN)
HU YUSHENG (CN)
XIAO YONG (CN)
TONG TONG (CN)
LU SUHUA (CN)
Application Number:
PCT/CN2018/119784
Publication Date:
September 19, 2019
Filing Date:
December 07, 2018
Export Citation:
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Assignee:
GREE ELECTRIC APPLIANCES INC ZHUHAI (CN)
International Classes:
H02K1/27; H02K29/03
Foreign References:
CN108321955A2018-07-24
CN208316434U2019-01-01
CN102769367A2012-11-07
CN106469953A2017-03-01
CN202444391U2012-09-19
CN106936284A2017-07-07
US20160204664A12016-07-14
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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