Integrated mathematical model and closed loop control characteristic analysis of hybrid active power filter

An integrated mathematical model of voltage source inverter (VSI) under two types of closed loop control methods is proposed based on the analysis of operating principle of hybrid active power filter (HAPF). Then the integrated mathematical model of HAPF is presented based on the integrated model of voltage type inverter. Furthermore, the closed loop control characteristics of HAPF are discussed. Simulation and experiment results have confirmed the validity of the closed loop control characteristics analysis of HAPF.