表贴式永磁同步电机的磁钢损耗测量
摘要
永磁同步电动机（PMSM）的磁钢损耗会降低效率并增加热负荷。本文提出一种测量永磁同步电机磁钢损耗技术。磁钢损耗是通过其测量初始温度上升速率来确定的。测量磁钢温度的方法是通过标定温升与电压间的常数而获得。针对逆变器驱动的轴向磁通永磁同步电动机的若干运行点进行测量，其结果用来验证有限元分析，并依据磁钢中磁通变化情况将总损耗进行分解。分析表明，虽然磁动势（MMF）引起的损耗随着电流增加，但电流谐波含量却减少，从而导致总损耗只有微小的变化。在不同直流母线电压下测量磁钢损耗；直流母线电压增加60％，磁钢损耗增加32％。
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