VVCF AC-AC Converters Using Single Bridge Circuit

Abstract

Single-phase and three-phase voltage source converters with variable voltage and constant frequency ac-ac conversion are presented. These converters are a single bridge circuit of two legs for single-phase conversion and of three legs for three-phase, respectively. Both the power source and the load are connected to bridge legs. The normal PWM methods with the sinusoidal modulating and the triangular carrier waves are used for the converters. The experimental results confirm that the PWM converters can generate the sinusoidal input/output currents.