Steady-state operating characteristics of unified active power filters

Abstract

This paper presents the steady-state operating characteristics of unified active power filters (UAPFs). The UAPF is an integration of series and shunt active filters and has a unique approach towards the control of the series active filter for reactive power compensation. The principle characteristics of UAPFs are presented by way of analyzing steady-state operating conditions and identifying different modes of operation. Simulation results are provided to verify the analysis. The analytical results are useful for the selection of kVA ratings and optimal operating conditions of active filter components.