A new contribution into performance of active power filter utilizing SVM based HCC technique

摘要

This paper proposes a control algorithm for shunt active power filters APF's, based on space vector modulation (SVM) and hysteresis current controller (HCC) techniques for current regulated voltage source converters (VSC), which allows precise compensation of harmonic currents produced by distorted loads. The approach is based on the direct current control in which the load current is measured, then filtering out the fundamental component. Two sets of hysteresis comparators determine the switching vector. The set with wider hysteresis band works as a region detector. Utilizing the proposed SVM based HCC technique leads to a significant reduction in the number of switching and hence the cost is reduced.