单相有源电力滤波器的控制方法

Control Method of Single-phase APF

针对基于单周控制的单相有源电力滤波器只能同时补偿谐波和无功电流、且要求电源电压无畸变的情况,利用基于瞬时无功功率理论的谐波和无功分量检测方法,将单周控制作为电流跟踪控制,在推出控制方程和控制电路的基础上进行了仿真研究,仿真结果证明在电网电压存在畸变的情况下,采用该方案的有源电力滤波器补偿效果良好,而且可以根据需求实现灵活补偿.

As one-cycle controlled single-phase active power filter （APF） only can compensate harmonics and reactive currents simultaneously, this paper detects circuit based on instantaneous reactive theory and current traces control circuit based on one-cycle control with harmonic current. The control equations and circuit are set up. The results of simulation verify that this scheme is effective and APFs can compensate harmonic and reactive current according to requirement with the distorted source voltages.