A new controller scheme for seven-level cascade multilevel converter based shunt active power filter

摘要

In this paper, a new controller scheme for seven-level cascade multilevel converter based shunt active power filter has been proposed aimed to overcome the disadvantages of the existing controller schemes by reducing the complexity, number of measurement signals and computing time. The feasibility of the proposed controller schemer is verified by the digital simulation in MATLAB/SIMULINK platform. The simulation results indicate that the proposed method can be used to compensate for balanced/unbalanced current, reactive power beside neutral conductor current in case of four-wire distribution systems.