Hybrid Active Power Filters for Reactive Power Compensation with Adaptive DC-Link Voltage Control

This paper presents adaptive dc-link voltage controlled LC coupling hybrid active filters for reduced switching losses and switching noise under the reactive power compensation. The adaptive DC link voltage controller for three phase four wire system LC-Hybrid Active power factor filters (LC- HAPF) is proposed. In this proposed system the reactive power compensation range as well as dc-link voltage can be adaptively changed according to different inductive loading situations. The simulation results of three phase four wire LC-Hybrid Active power filters are presented to verify the validate and the effectiveness of the adaptive dc-link voltage-controlled LC-HAPF for reactive power compensation.