Title:
ELECTRIC MOTOR OVERLOAD PROTECTION METHOD, ELECTRIC MOTOR CONTROLLER, AUTOMOBILE AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2023/050892
Kind Code:
A1
Abstract:
An electric motor overload protection method, an electric motor controller, an automobile and a storage medium. The method comprises: collecting the current phase-current valid value of an electric motor (S101); performing time integration on the current phase-current valid value, so as to acquire a first integral value (S102); acquiring a first threshold value (S103); performing overload detection according to the first threshold value and the first integral value (S104); and if overload occurs, determining a target limiting current of the electric motor during operation, and controlling the operation of the electric motor on the basis of the target limiting current (S105).
Inventors:
WANG CHUNSHENG (CN)
XU BOLIANG (CN)
XIONG WEI (CN)
QIN TAO (CN)
CAO AN (CN)
XU BOLIANG (CN)
XIONG WEI (CN)
QIN TAO (CN)
CAO AN (CN)
Application Number:
PCT/CN2022/099001
Publication Date:
April 06, 2023
Filing Date:
June 15, 2022
Export Citation:
Assignee:
BYD CO LTD (CN)
International Classes:
H02H7/085; H02H7/08; H02P29/02; H02P29/024
Foreign References:
| CN101777754A | 2010-07-14 | |||
| CN103795032A | 2014-05-14 | |||
| CN104836205A | 2015-08-12 | |||
| JPH09149546A | 1997-06-06 | |||
| EP0540417A1 | 1993-05-05 |
Other References:
HUANG, XINBO ET AL.: "Technology and Application of Avoiding Locked Rotor Fault of HV Switchgear Electric Chassis", HIGH VOLTAGE APPARATUS, vol. 54, no. 3, 16 March 2018 (2018-03-16), ISSN: 0205-0211
Attorney, Agent or Firm:
ZHIFAN & PARTNERS (CN)
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