永磁同步电机常见故障建模与仿真研究

通过对永磁同步电机三相对称短路故障、匝间短路故障和开路故障三种常见电气故障电机绕组的理论分析,得到了三相稳态短路故障的约束条件。永磁同步电机数学模型在三种坐标系下各有优缺点,分别在三种坐标系下深入地对匝间短路故障和开路故障的数学模型进行了理论推导。利用MATLAB/Simulink平台对三种故障进行模拟和仿真,参照正常时仿真的工作波形对结果对比分析,仿真结果验证了分析方法和数学模型的正确性,并获得了永磁同步电机基本的故障特征信息。该理论基础也将有利于开展进一步的故障检测、故障容错等研究,其故障电机模型也可应用于电机模拟器等领域。

Research on Modeling and Simulation of PMSM Common Faults

Based on the theoretical analysis of three-phase symmetrical short-circuit fault of PMSM,turn to turn short-circuit fault and open circuit fault,the constraints of three-phase steady-state short-circuit fault were obtained.The mathematical model of PMSM has advantages and disadvantages in each of the three coordinate systems,so the mathematical models of turn to turn short-circuit fault and open-circuit fault were derived under the three coordinate system.Based on MATLAB/Simulink platform,three kinds of faults were simulated.The results were compared and analyzed with reference to the normal simulation working waveform.The simulation results verified the correctness of the analysis method and mathematical model,and obtained the basic fault information characteristics,which provided a model for further research on fault detection and fault tolerance of PMSM.The fault model can also be used in the field of motor simulator.