A series active power filter for harmonic voltage suppression

Abstract

This paper proposes a terminal harmonic voltage compensator using a series active filter which reduces or even eliminates harmonic voltage content supplied to critical loads or Consumers. Consisting of a voltage-fed PWM inverter with a LC filter, it is inserted in series between an AC supply and a load. The compensation principle and theoretical analysis are described. Simulation results of an active filter, applied to a 3000W load, are presented which validate its purpose. Experimental results obtained from an active series filter prototype are shown to confirm the theory and feasability of the proposed system.