摘要
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。
The research on influence of the fundamental armature magnetic motive force （MMF） on the tooth harmonic electromotive force （EMF） of the rotor is one of the key problems for utilizing inherent tooth harmonic magnetic fields to achieve the adjustment of the air gap magnet field of the permanent magnet machine. The principle of the rotor tooth harmonic EMF generated by the stator fundamental armature MMF was analyzed qualitatively based on the permeability analysis method. The influence of the fundamental armature MMF on the rotor tooth harmonic EMF were discussed for linear and nonlinear magnetic circuits. When the generator is connected with an inductive load, the rotor tooth harmonic EMF decreases as the armature current increases for the linear magnetic circuits. However, for the non-linear magnetic circuits, the rotor tooth harmonic EMF may increase, maintain constant or decrease as the armature current increases. Calculation and experiment are performed for one hybrid excitation permanent magnet synchronous generator utilizing tooth harmonic for excitation, and calculated and experimental results are consistent with theoretical analysis.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2015年第9期2304-2309,共6页
Proceedings of the CSEE
基金
国家自然科学基金项目(51367013)
江西省教育厅科技项目(GJJ14164)~~
关键词
混合励磁
永磁电机
同步发电机
齿谐波
hybrid excitation
permanent magnet machine
synchronous generator
tooth harmonic
