摘要
本文从理论和实验的角度出发,分析了有源滤波器的谐波补偿原理,研究了输出电流波形的PWM控制技术及滤波器内部能量损耗的补偿问题。在最后的实验中,由桥式整流器所产生的谐波电流得到了补偿,补偿后的系统电流实质上是正弦波。
In this paper, from the point of view of theory and experiment,the principle of harmonic current compensating of the active filter (AF)is analyzed. And,the PWM control techniqueof the output current waveform and the compensating problem of the energy loss inside AFare also studied. In the elxperiment,the harmonic current produced by a bridge rectifier hasbeen compensated,and the compensated system current is in substance sine-wave.
