Title:
METHOD AND DEVICE FOR CONTROLLING PERMANENT MAGNET MOTOR, POWER SYSTEM, AND ELECTRIC VEHICLE
Document Type and Number:
WIPO Patent Application WO/2021/253694
Kind Code:
A1
Abstract:
A method and device for controlling a permanent magnet motor (30), a power system (100), and an electric vehicle. The method comprises: obtaining system parameters, such as the resonance bandwidth of the permanent magnet motor (30) and the natural frequency of a stator of the permanent magnet motor (30); setting a power-on frequency of the permanent magnet motor (30); and when a power battery (10) satisfies a self-heating condition, supplying power to the permanent magnet motor (30) by means of an alternating current with the power-on frequency, thereby reducing noise generated by the motor (30) in the self-heating process of the power battery (10).
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Inventors:
HUANG XIAOJIAN (CN)
ZUO XIYANG (CN)
DAN ZHIMIN (CN)
LI BAO (CN)
ZUO XIYANG (CN)
DAN ZHIMIN (CN)
LI BAO (CN)
Application Number:
PCT/CN2020/121300
Publication Date:
December 23, 2021
Filing Date:
October 15, 2020
Export Citation:
Assignee:
JIANGSU CONTEMPORARY AMPEREX TECH LTD (CN)
International Classes:
B60L15/00; B60L15/20; B60L58/27
Foreign References:
| CN111439132A | 2020-07-24 | |||
| CN103560304A | 2014-02-05 | |||
| CN110557079A | 2019-12-10 | |||
| CN110048192A | 2019-07-23 | |||
| CN109823234A | 2019-05-31 | |||
| CN107666028A | 2018-02-06 | |||
| CN105932363A | 2016-09-07 | |||
| JP2010259217A | 2010-11-11 | |||
| CN202010540328A | 2020-06-15 |
Other References:
See also references of EP 3957512A4
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