LCL in parallel active power filter of SVPWM control

Although the traditional active power filter, which is in the grid side using the single inductance L as output filter, can be used to improve the quality of the power, the high frequency ripple suppression effect of them is less than ideal. In order to improve the high frequency ripple suppression capacity, in this paper, we propose a topology of the LCL filter paralleling to the grid side, and SVPWM tracking control algorithm is used to improve the tracking performance of active power filter. By constructing Lyapunov function, the stability of the LCL in parallel active power filter is analyzed, and the simulation and experimental results show that APF using LCL as output filter, can suppress the high frequency ripple, and the supperession effect can be improved.