SPWM供电时电机铁心损耗的研究与测试  

Research and Measurement of Iron Losses in Motor Fed by SPWM Waveform

作　　者：聂亚林[1] 黄允凯[1] 胡虔生[1] 

机构地区：[1]东南大学电气工程学院,江苏南京210096

出　　处：《电机与控制应用》2009年第10期28-33,共6页Electric machines & control application

基　　金：国家自然科学基金项目(50477021)

摘　　要：介绍了适用于任意磁场波形铁耗计算的谐波分析法,将计算出的正弦脉宽调制(SPWM)谐波电压与基波电压的关系代入其中,得到了SPWM波供电的铁耗电压计算公式。建立试验测量电路,测量出的铁耗计算公式参数与理论推导的公式基本一致,并观察了SPWM波供电时铁耗与调制比和载波比的变化规律。将谐波分析法应用于变频电机中得到其铁耗的计算公式,对样机进行空载试验,试验得到的铁耗测量值与由公式计算出的计算值吻合良好。The knowledge of harmonic and fundamental component of SPWM voltage is introduced,and corresponding iron loss calculation model is derived in term of harmonic analysis method which is sufficed for arbitrary waveform supply.Experiment circuit is established to measure iron loss under SPWM supply.Parameters in the prediction model are worked out,as well as the connection of iron loss and modulation index or carring index,and there is hardly any discrepancy between the measured and the computed results.The iro...

关 键 词：谐波分析 铁耗 变频电机 

分 类 号：TM307[电气工程—电机]