Applying reduced general direct space vector modulation approach of AC-AC matrix converter theory to achieve unity power factor controlled three-phase AC-DC matrix rectifier

Abstract

This paper presents the application of reduced form of general direct space vector modulation(G-SVM) approach of ac-ac matrix converter theory to three-phase ac-dc matrix rectifier. The reduced form of G-SVM and the derivation of three-phase ac-dc matrix rectifier from three-phase ac-ac matrix converter are described and theoretically justified. A prominent feature of the reduced G-SVM controlled three-phase ac-dc matrix rectifier, in addition to its capability of tight dc-voltage regulation, is the simple and direct control of the input ac current displacement phase angles (displacement power factors). Simulated and experimental verifications for this work have been presented and discussed.