Space vector modulation based on virtual indirect control for high frequency AC-linked matrix converter

Abstract

This paper proposes a space vector modulation of a high frequency AC-inked matrix converter which is applied to an electric transformer system. The one of problem of a commercial frequency transformer is bulky and heavy. In order to resolve this problem, we propose to use a high frequency transformer driven by three-phase to single phase matrix converter. In this paper, the virtual indirect control method with a space vector modulation is applied to the primary and secondary side matrix converter. Particularly, the control of the secondary side matrix converter should be considered because the input is rectangle which has multiple levels of voltage. The fundamental operation of the proposed system is demonstrated by experiment and simulation with 1-kW prototype. Besides, the volume and weight of the proposed system are compared with that of the commercial frequency transformer system at 50 kVA. As the result, it is confirmed that the volume and weight of the proposed system are reduced to 15% and 5%, respectively in comparison with that of the transformer system.