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基波电枢磁动势对转子齿谐波电动势的影响

DOI: 10.13334/j.0258-8013.pcsee.2015.09.026, PP. 2304-2309

Keywords: 混合励磁,永磁电机,同步发电机,齿谐波

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Abstract:

研究电枢磁动势对转子齿谐波电动势的影响是利用电机中固有的齿谐波磁场实现永磁电机气隙磁场调节的关键问题之一。基于磁导分析法定性分析了定子基波电枢磁动势在转子侧产生齿谐波电动势的机理,讨论了线性磁路和非线性磁路下基波电枢磁动势对转子齿谐波电动势的影响。当发电机带电感性负载时,对于线性磁路,转子齿谐波电动势随着电枢电流的增加而减小;而对于非线性磁路,随着发电机电枢电流的增加,转子齿谐波电动势可能增加、不变或者减小。针对一台齿谐波励磁的混合励磁永磁同步发电机进行了计算和实验,计算结果和实验结果均与理论分析吻合。

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