Crrc Zhuzhou Institute Co., Ltd.

Xiaofan Zeng

Jianghua Feng

Xiong Liu

Jing Shang

Junfeng Xu

Yuliang Wen

Yaping He

Hanfeng Zheng

Jiade Huang

Zhaoyang Zhang

A method and a system for correcting an initial zero position deviation are provided, which is applied to a permanent magnet synchronous motor and a resolver. The method includes: driving a rotor of the permanent magnet synchronous motor to rotate at a constant speed; acquiring counter electromotive forces of a stator of the permanent magnet synchronous motor and a position of a rotor of the resolver; calculating a space vector phase angle &#x3b8;based on the counter electromotive forces; acquiring a rotation angle &#x3b8;measured by the resolver; calculating an installation deviation &#x394;&#x3b8; corresponding to the space vector phase angle &#x3b8;and the rotation angle &#x3b8;; and adjusting a position of the resolver until the installation deviation &#x394;&#x3b8; meets a precision requirement.

Method and system for correcting initial zero offset

Growing community of inventors

Hunan, China

Xiaofan Zeng