单相家用电器负载瞬时谐波补偿的仿真研究

The Simulation Research About Real-time Harmonic Compensation of Single-phase Consumer Electronic Equipment load

首先用PLL电路和信号发生电路产生与电源电压基波同频的单位正、余弦波形,再用4个乘法器、2个LPF、2个加法器实现单相电路负载电流瞬时谐波的检测,并将此方法应用于家用电器负载谐波补偿用有源电力滤波系统中,通过计算机仿真研究其控制性能,仿真结果证明了单相瞬时谐波电流检测法在实际系统中的实用性。

This paper proposes a PLL circuit and a signal generator which generated a sine or cosine waveform that has the same frequency as the voltage base wave,then uses four multipliers,two LPFs and two adders to realize active power filter system of the consumer electronic equipment load for harmonic compensation,in order to detect harmonic in single-phase circuits in real-time.The control performance is verified through the computer simulation.The result shows that the method is practical in the real system.