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Title:
METHOD FOR CONTROLLING VECTOR FIELD WEAKENING OF PERMANENT MAGNET SYNCHRONOUS MOTOR FOR VEHICLE
Document Type and Number:
WIPO Patent Application WO/2022/199216
Kind Code:
A1
Abstract:
Disclosed is a control method for vector field weakening of a permanent magnet synchronous motor for a vehicle. The method comprises a current closed-loop adjustment module, a modulation ratio deviation calculation module, a current instruction angle compensation module, a current angle presetting module, a current instruction angle limiting comparator, and a current given vector correction module. In the present invention, the adjustment direction is always a weak magnetic direction, and instability caused by repeated adjustment will not occur; correcting while introducing a dq current may distribute stress against voltage saturation to the dq current, avoiding excessive output torque deviation due to excessive single-axis current adjustment; moreover, while ensuring the safety of a drive system, the effect of a field-weakening control link on the output torque of the drive system is decreased as much as possible.

Inventors:
JI FEIFAN (CN)
LI JING (CN)
CHEN YUWEI (CN)
Application Number:
PCT/CN2022/070785
Publication Date:
September 29, 2022
Filing Date:
January 07, 2022
Export Citation:
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Assignee:
UNIV ZHEJIANG CITY COLLEGE (CN)
International Classes:
H02P21/00; H02P21/14; H02P21/22; H02P25/022
Foreign References:
CN112688610A2021-04-20
CN111711394A2020-09-25
CN111277182A2020-06-12
US20110118937A12011-05-19
Attorney, Agent or Firm:
HANGZHOU QIUSHI PATENT OFFICE CO., LTD (CN)
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