Early detection of inter-turn and demagnetization faults of permanent magnet synchronous wind generator

被引：0
|
作者：
Liu Y. [1 ]
Zhang T. [1 ]
Wang X. [1 ]
Gao X. [1 ]
Xie H. [2 ]
机构：
[1] Institute of Electrical Engineering, Shenyang University of Technology, Shenyang
[2] School of Electric Power, Shenyang Institute of Engineering, Shenyang
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2022年 / 43卷 / 10期
关键词：
Demagnetization; Fault diagnosis; Inter-turn short-circuit; Permanent magnet synchronous motor; Zero sequence voltage;
D O I：
10.19912/j.0254-0096.tynxb.2021-0307
中图分类号：
学科分类号：
摘要：
Permanent magnet synchronous generator has unique advantages in power generation efficiency, reliability, grid friendliness and other aspects, and has gradually become the mainstream choice of wind turbines with capacity of 5 MW and above. In this paper, the characteristics and monitoring methods of demagnetization and short circuit between winding turns of permanent magnet synchronous motor are studied, and the mathematical models of these two faults are established. A method based on zero-sequence voltage component and fault indication is proposed to detect early minor fault and judge fault phase of inter-turn short-circuit. An on-line demagnetization fault monitoring method based on sliding mode observer is proposed. The method not only can precisely identify the permanent magnet flux, but also possesses the advantages of higher identification precision and faster speed. The simulation results verify the availability and advantages of the two fault diagnosis methods. © 2022, Solar Energy Periodical Office Co., Ltd. All right reserved.
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页码：252 / 258
页数：6
相关论文
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