不同供电方式下永磁同步电动机铁耗计算与分析

摘要

为了研究不同供电方式对永磁同步电动机定子铁耗的影响,将定子铁心分为4个典型的区域,求得定子总损耗,将计算结果进行对比分析,验证了算法的准确性.结果表明,正弦供电时,齿轭的总损耗最高,占一半以上;其次是齿中、齿尾,齿顶的损耗最少.变频供电时,当载波比相同时,随着调制比的减小,定子铁耗增加;而当调制比相同时,随着载波比的减小,定子铁耗也增加.%To study the influence of different power supply on the iron loss of permanent magnet synchronous motor, the stator core was divided into several typical areas and the stator total loss was obtained.The accuracy of the algorithm was verified by comparing the calculated results.The results showed that the total loss of the tooth yoke was the highest,ac-counting for more than half;the second was the tooth middle and the tooth tail;the total loss of the tooth top was the least under sinusoidal power supply.In variable frequency power supply,the stator iron loss increased with the decrease of the amplitude modulation ratio.However,the stator iron loss increased with the decrease of the frequency modulation ratio.