摘要
针对无刷直流电动机逆变器功率管短路及开路故障,采用小波变换对电机转速信号进行时间-频率域分析,并结合傅里叶变换进行对比研究。仿真结果表明,小波变换能有效地实现逆变器的故障检测。
Aimed at the short-circuit and open-cireuit fault of transistors in the inverter of brushless direct current motor,this paper uses wavelet transform to analyzes the signal of the running speed of the motor in the time-frequency domain and combines with Fourier transform to carry out comparative study. The simulation results show that wavelet transform can effectively achieve the fault detection of inverter.
基金
甘肃省自然科学基金项目(3ZS061-A25-050)
关键词
无刷直流电机
逆变器
故障检测
小波变换
傅里叶变换
brushless direct current motor
inverter
fault detect
wavelet transform
Fourier transform
