一种新型矿用电机—复合转子异步电机谐波电磁场的三维分析

3D Analysis on the Harmonic Field for a Composite - Rotor Induction Motor Used in Coal Mine

对一种新型矿用电机一复合转子异步电机中定子高次谐波磁势在有限长转子中所产生的涡流磁场进行三维分析.结论是,谐波磁场的三维特性比基波磁场明显减弱,谐波磁场的次数越高,磁场越趋于二维分布,在各次谐波磁场中,齿谐波磁场较强,有时甚至强于任何其它高次谐波,因此设法削弱齿谐波磁场是降低谐波转矩和附加损耗、提高电机效率的有效方法.

In this paper ,the 3D harmonic field resulted from harmonic magnetomotive force of the stator has been discussed The 3D characteristic of harmonic field is much weaker than the fundamental field. The higher the order of the field,the more the field tends to be 2D distribution Among all the harmonic fields, the component of tooth harmonic is large, sometimes larger than any other harmonic components,thereforce,reducing this component is a very efficient method to decrease the stray loss.