Performance of CLC Filters with Shunt APF for Harmonic Current Mitigation

Abstract

A CLC filter with shunt APF is presented, which focuses on harmonic current mitigation. This paper’s main aim is to conduct a comprehensive comparative analysis between LCL and CLC filters with Shunt APF for harmonic current compensation in electric power network owing to nonlinear devices associated to the grids. The suggested CLC filter contains the conventional parameters of LCL filter but connected in the Nominal pi () configuration. Similar parameters were used for the T-network (LCL) and nominal pi () network (CLC) configurations. The behavior of these filters was proven by simulation using shunt APF in MATLAB/Simulink. The CLC and LCL filters using passive damping were analyzed. The CLC filter displays better current harmonic compensation but the capacitor (C1) branch has relatively high current, as compared to LCL. Due to the high current which will lead to high power losses in the capacitor branch of the filter; its development for small power application will be highly recommended.