有源电力滤波器双开关表直接功率控制策略研究

Study of Double Switching Table DPC Control Strategy for Active Power Filter

并联有源电力滤波器的主要功能是实时补偿谐波电流,防止谐波电流流入电力系统造成污染。根据瞬时功率理论,把检测出的谐波功率直接作为参考功率信号,根据功率同开关量的关系,使用双开关表的方法完成对有功功率和无功功率的分别控制。仿真结果表明,采用这种控制策略设计出的有源电力滤波器具有良好的谐波补偿效果。

The main function of shunt active power filter is to compensate harmonic current on-line,making the power system not be polluted by harmonic current.According to the instantaneous power theory.In this method,the harmonic power is detected to be the reference compensation power directly,based on the relationship between power and switch,the method of double switching table was used to control the active power and the reactive power,respectively.Finally,simulation results indicate that the APF controller with double switch DPC show perfect harmonic compensation performances.