基于有限元场路耦合的十二相整流发电机系统定子匝间短路分析

Analysis of Stator Winding Inter-Turn Short Circuit on a 12-Phase Rectifier Generator System Based on Finite Element Field-Circuit Coupling

为研究十二相整流发电机系统在定子绕组匝间短路时的运行情况,建立了基于有限元场路耦合仿真的十二相整流发电机系统模型,该模型综合考虑了齿槽效应、谐波等的影响,具有较高的精确度,适用于系统的发电机故障和整流部分故障的研究。根据所建立的模型,对十二相整流发电机系统定子绕组匝间短路故障进行了研究,通过分析故障状态下系统的负载电压、相电压、相电流、短路电流等的变化特点,说明定子绕组匝间短路故障对系统产生的影响。通过仿真与实验结果对比,验证了该文所建模型的合理性和正确性。

In order to study the operation of 12-phase rectifier generator system when the stator winding is short circuited, a system model based on finite element field-circuit coupling simulation is established. The model takes into account the effects of cogging effect, harmonics and so on, has high degree of accuracy, which is suitable for fault diagnosis of generator and rectifier part. According to the established model, stator winding inter-turn short circuit faults of 12-phase rectifier generator system were analyzed. The waveforms of the system load voltage, phase voltage, phase current and short circuit current were obtained, and the effect on stator winding inter-turn short circuit faults of the system was indicated after analyzing waveforms. Through comparative analyses, the simulation results coincide well with experimental results, which verify the rationality and accuracy of the model and analysis.