使用混沌调制方法实现交流电机电磁干扰抑制

Instead of avoiding occurrence of chaos in motor drives,chaos is positively utilized in this paper.A new chaotic pulse width modulation (PWM) scheme is proposed and implemented for AC motors,which functions to significantly suppress harmonic peaks and hence acoustic noise.The key is to employ the Chua's circuit for generating a desired chaotic sequence.By using a practical induction motor,computer simulation and experimental results verify that the chaotic PWM has advantages of harmonic peak suppression and simple hardware implementation over the conventional PWM and random PWM.     

基于静止坐标系的横向磁场永磁电机电流控制

A new stationary-frame AC current control strategy that can eliminate steady-state errors is discussed and appliedto the control of transverse flux permanent-magnet machine (TFPM). Based on the principle of modulation and demodulation,this AC controller can achieve the same frequency response characteristic as the equivalent DC controller. Validity of the TFPMcontrol system using this current control strategy is confirmed with simulation results.