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 i_p-i_q 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.