Shunt Active Power Filter Control Methods and Simulation

Along with the development of strong and smart grid, smart power electronic devices and technologies have been widely used in the smart grid. However, the nonlinear characteristics of power electronic devices brought to the harmonic pollution of smart grid. Shunt active power filter (SAPF) is widely used for the harmonic suppression and reactive power compensation, which has good dynamic compensation in the harmonic and reactive power in the smart grid. This paper analyzed the compensation principle of SAPF, used the ip-iq method including DC voltage loop control for the detection of smart grid command current and the definite-hysteresis current control method for the SAPF tracking control, as well as built the simulation model with Matlab/Simulink from different controlling angle. The simulation results and FFT analysis shows that definite-hysteresis current tracking control is effective for the real-time tracking control, the simulation model system can real-time detect the operation command contained in the current system, and do the effective compensation, which can achieve the ideal effect.