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

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.