Seven Level Shunt Active Power Filter for Induction Motor Drive System

Abstract

The main objective of this paper is mitigating the harmonics in load side and source side currents by using seven level shunt active power filters. And these mitigating current is fed to induction motor drive further draw its characteristics. In this paper, a novel topology is suggested where two active filter inverters are connected with tapped reactors to share the compensation currents. The proposed active filter topology can also produce seven voltage levels, which suggestively reduces the switching current ripple and the size of passive components. Here a predictive current regulator is applied to track the harmonic currents, which has the advantages of simple structure and less computational requirement. In our system we employed joint-phase redundant states selection(JRSS) technique is used that gradually reduces overall magnetizing currents.Depends on the joint redundant state selection strategy, and also current balancing algorithm is also presented in order to preserve reactor magnetizing current to be maintain minimum as possible that was shown through Matlab simulation achieve high overall system performance.
Keywords (Size 10 & Bold) — Shunt Active power filters; Total harmonic distortion; Power conversion; Power Drives