永磁同步发电机定子绕组匝间短路故障数学模型及其仿真
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摘要
针对永磁同步发电机定子绕组匝间短路故障问题,在分析PMSG通用数学模型的基础上,引入匝间短路故障因子,推导出三相静止坐标系下的定子绕组匝间短路故障数学模型;然后基于Matlab/Simulink建立了仿真模型,采用时域仿真分析法和FFT分析,研究了PMSG分别在正常和定子A相绕组匝间短路不同严重程度下的运行工况.结果表明:PMSG定子电流的值会随故障严重程度的加剧而增大,只有当定子绕组的短路匝数达到一定数目时,对应的定子电流的幅值变化才会比较明显.
Aiming at the problem of stator winding inter-turn short circuit fault of permanent magnet synchronous generator( PMSG),the fault factor of inter-turn short circuit was introduced based on the analysis of PMSG general mathematical model,and the mathematical model of stator winding inter-turn short circuit fault in three-phase stationary coordinates was derived. In addition,the simulation model based on Matlab/Simulink was established,and the operating conditions of PMSG normal and stator A phase winding inter-turn short circuit under different severity were studied using time-domain simulation and FFT analysis. Simulation results showed that the stator current would increase with the severity of the stator winding inter-turn short circuit fault of PMSG,and when the stator winding short circuit turned to reach a certain number,corresponding stator current amplitude changes would be more obvious.
Aiming at the problem of stator winding inter-turn short circuit fault of permanent magnet synchronous generator( PMSG),the fault factor of inter-turn short circuit was introduced based on the analysis of PMSG general mathematical model,and the mathematical model of stator winding inter-turn short circuit fault in three-phase stationary coordinates was derived. In addition,the simulation model based on Matlab/Simulink was established,and the operating conditions of PMSG normal and stator A phase winding inter-turn short circuit under different severity were studied using time-domain simulation and FFT analysis. Simulation results showed that the stator current would increase with the severity of the stator winding inter-turn short circuit fault of PMSG,and when the stator winding short circuit turned to reach a certain number,corresponding stator current amplitude changes would be more obvious.
引文
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[2]苏晓丹,纪志成. PMSM定子匝间短路故障建模与仿真研究[C]∥2007中国控制与决策学术年会论文集.沈阳:东北大学出版社,2007:615-618.
[3]银英君,林荣文.基于Simulink永磁同步电机矢量控制系统仿真[J].东方电气评论,2010,6(24):55.
[4]崔胜民,柏睿,崔淑梅. PMSM在abc坐标下的建模及故障仿真[J].机械设计与制造,2011(7):178.
[5]郭清,夏虹,韩文伟.基于小波熵与BP神经网络的电机故障信号研究[J].仪表技术与传感器,2014(1):96.
[6] SHAH D,NANDI S,NETI P. Stator-interturnfault detection of doubly fed induction generators using rotor-current and search-coil-voltage signature analysis[J]. IEEE Transactions on Industry Applications,2008,45(5):1831.
[7]刘毅,郑志国.基于参数模型永磁同步电机定子绕组匝间短路故障研究[J].电机与控制应用,2015,42(10):48.
[8] STEFANI A,YAZIDI A,ROSSI C,et al. Doubly fed induction machines diagnosis based on signature analysis of rotor modulating signals[J]. IEEE Trasactions on Industry Applications,2008,44(6):1711.
[9]刘沛津,谷立臣.异步电机负序分量融合方法及其在定子匝间短路故障诊断中的应用[J].中国电机工程学报,2013,33(15):119.
[10]李俊卿,王栋,何龙.双馈式感应发电机定子匝间短路故障稳态分析[J].电力系统自动化,2013,37(18):103.
[11]马宏忠,张志艳,张志新,等.双馈异步发电机定子匝间短路故障诊断研究[J].电机与控制学报,2011,15(11):50.
[12]黄守道,邓建国,罗德荣.电机瞬态过程分析的MATLAB建模与仿真[M].北京:电子工业出版社,2013.