全球能源互联网（英文）2023，Vol.6Issue(1)：103-114,12.DOI:10.1016/j.gloei.2023.02.009
永磁风力发电机典型故障的电磁特征分析
Analysis of electromagnetic characteristics of typical faults in permanent magnet wind generators
摘要
Abstract
Due to the harsh actual operating environment of the permanent magnet wind turbine, it is easy to break down and difficult to monitor. Therefore, the electromagnetic characteristics identification of major fault types of large-scale permanent magnet wind turbines is studied in this paper. The typical faults of rotor eccentricity, stator winding short circuit and permanent magnet demagnetization of permanent magnet wind turbines are analyzed theoretically. The wavelet analysis algorithm is used to decompose and reconstruct the abnormal electromagnetic signal waveform band, and the characteristic frequency of the electromagnetic signal is obtained when the fault occurs. In order to verify the effectiveness of the proposed method, a 3.680MW permanent magnet wind turbine was taken as the research object. Its physical simulation model was established, and an external circuit was built to carry out field co-simulation. The results show that the motor fault type can be determined by detecting the change rule of fault characteristic frequency in the spectrum diagram, and the electromagnetic characteristic analysis can be applied to the early monitoring of the permanent magnet wind turbine fault.关键词
转子偏心/定子绕组短路/永磁体消磁/小波包Key words
Rotor eccentricity/Stator winding short circuit/Permanent magnet demagnetization/Wavelet packet引用本文复制引用
刘光伟,于文彬,王晓东,滕云,陈哲..永磁风力发电机典型故障的电磁特征分析[J].全球能源互联网（英文）,2023,6(1):103-114,12.基金项目
This work is supported by the National Natural Science Foundation of China(U22A20215 and 51537007)the Natural Science Foundation of LiaoNing Province(2021-YQ-09). （U22A20215 and 51537007）
