多相感应电机场路耦合时步有限元分析  

Field-circuit Coupled Time-stepping Finite Element Analysis for Multi-phase Induction Motors

作　　者：乔鸣忠[1] 梁京辉[1] 张晓锋[1] 李珺[1] 

机构地区：[1]海军工程大学电气与信息工程学院,湖北省武汉市430033

出　　处：《中国电机工程学报》2010年第24期75-80,共6页Proceedings of the CSEE

摘　　要：为解决多相感应电动机在非标准正弦供电时的场路耦合分析问题,提出一种用于多相感应电动机的场路耦合运动时步有限元分析方法。考虑变频器供电时SPWM波中的高次谐波,给出控制电路与电磁场方程耦合的时步有限元分析方法,采用运动气隙边界法解决转子运动问题,与机械运动方程相结合,可对电机的瞬态过程进行仿真。应用上述模型对1台五相感应电动机及其调速系统进行分析,计算结果与样机实验结果吻合较好。将解析法、场路耦合法的计算结果与实验结果比较,表明场路耦合法能充分考虑电机齿槽效应以及铁磁材料的非线性影响,与实验结果更接近。该方法也可用于其他类型的多相电机逆变器供电的场路耦合分析。A field-circuit-motion coupled time-stepping finite element analysis （FEA） model was presented for analyzing the multi-phase induction motor especially for solving the problem induced by non-sinusoidal power supply.The high order harmonics was taken into account when the motor was driven by SPWM strategy.The finite element analysis involving control circuit and electromagnetic field was provided,and a moving air-gap boundary method combining motor motion equation was adopted to simulate the transient process of motor.The performance of a five-phase induction motor drive system is analyzed using the proposed model.It was proved that calculation results are very close to the measurement results.Compared with analytical and experimental results,the effectiveness of this method is testified which indicated that proposed method has considered the slot effect and the influence of ferromagnetic non-linearity,and it can also be used in the analysis on other types of inverter-driven multi-phase motors.

关 键 词：多相感应电动机 场路耦合 时步有限元 运动气隙边界法 逆变器供电 

分 类 号：TM346[电气工程—电机]