A Control Method of a Single-phase-to-three-phase Power Converter with an Active Buffer for Increasing Voltage Transfer Ratio

Abstract

This paper proposes a new control method and circuit configuration of a single-phase-to-three-phase power converter with an active buffer and a charge circuit to increase output voltage. By supplying the charge circuit with half of the single-phase electric power and increasing the duty ratio of the discharge circuit, the transfer ratio between the input and output voltages can be set to 0.8-1 theoretically. The validity of the proposed control method was confirmed in experiments.