The Simulation and Analysis of the Shunt Active Power Filter

Base on the characteristics of the shunt active power filter, we uses the power electronic devices of the MATLAB/Simulink to model the system, uses self-compiled S-function to carry out the ip-iq current detection algorithm. In order to compensate the harmonic currents generated by the non-linear load and the reactive power of the process, the PWM signal is generated to drive the IGBT by the way of hysteretic current-tracking control. The simulation results show that the system simulation effectively simulate the establishing process of the DC side capacitor voltage at different stages and the harmonic current's compensation status in the corresponding stages, which is an important guiding significance to the shunt active power filter in the practical application.