基于能量守恒PI控制方法的有源电力滤波器研究

Research on shunt active power filter based on a control method of PI conversation of energy

针对并联型有源电力滤波器谐波电流分量检测运算复杂,从直流侧电容电压以及APF补偿电流的双闭环控制角度出发,分析了在省略谐波及无功电流模块后的APF电流关系,在此基础上提出可基于新型电源电流控制的方法,不再需要复杂的硬件设计和有功电流运算单元,且保留了双闭环电流控制回路和参考指令电流控制器。并从能量守恒的角度论证了这种方法的可行性,提出了一种高性能的APF控制方法。最后通过仿真实验证明理论分析的正确性。

This paper aims at the complexity of calculation on inspection of harmonic of active power filters. From the perspective of DC side capacitor voltage and the compensation current of APF, this paper analyzes the current connection of APF when the part of harmonic and reactive power is omitted. Then it puts forward a new method based on the control of source voltage, which will avoid complex hardware design and the unit of current active power. It also reserves the part of double closed loop of current control and the referenced instruction control device. The feasibility of the method is demonstated from the perspective of conversation of energy. A high performance method to control APF is proposed. By using a simulated experiment, it shows the validity of theoretical analysis.