Zhejiang University

Hangzhou Huilong Auto Accessories Co., Ltd.

State Grid Zhejiang Electric Power Co., Ltd. Research Institute

Jiancheng Zhang

Wei Chen

Jian Zhang

Ying Yang

Youtong Fang

Jiabin Liu

Xiaoyan Huang

Chengyu Lu

Kuayu Wu

Xiaoming Huang

Boliang Lou

Hongtao Xiong

Jien Ma

Qinfen Lu

Weizhen Sun

Wen Hua

Qiulong Ni

The present application discloses a flexible excitation system and a method for controlling the same. The flexible excitation system consists of a plurality of groups of flexible excitation power units connected in parallel, a deexcitation circuit unit and a flexible excitation control unit. The method for controlling the flexible excitation system includes: realizing the internal fault-tolerant operation control of the flexible excitation power units by cooperatively controlling AC circuit breakers and DC circuit breakers of the flexible excitation power units and a deexcitation switch; dynamically controlling ceiling voltage when terminal voltage drops by using the fast response control ability of the flexible excitation system, so as to improve the forced excitation output capacity of the self-shunt excitation system. Aiming at the possible overload problem of an excitation transformer during the operation of flexible excitation, an excitation transformer overload limiter for the flexible excitation system is provided to limit the operation state of the excitation transformer within an allowable overload operation range of equipment.

Flexible excitation system and control method therefor

Coop car cover

A method for manufacturing a permanent-magnet motor rotor includes manufacturing a rotary shaft, a permanent magnet, a front end cover, a rear end cover, and a magnetic yoke unit, where the magnetic yoke unit contains multiple pole shoe parts and one iron core part, where each pole shoe part and the iron core part are connected therebetween via a connecting strip; manufacturing a rotor spacer; all positioning holes of the magnetic yoke unit correspond to the permanent-magnet through hole of the rotor spacer to form a permanent-magnet passage; inserting the permanent magnet into the permanent-magnet passage; inserting tightening bolts; cutting off the mid-section of each connecting strip, overlapping the pole shoe parts to form a rotor pole shoe, overlapping the iron core parts to form a rotor iron core; and arranging respectively the front end cover and the rear end cover on a front end and a rear end.

Method for manufacturing permanent-magnet motor rotor

Growing community of inventors

Zhejiang, China

Jiancheng Zhang