Bidirectional Single Stage Three Phase AC-DC Converter

Abstract: Every battery charger used for electric vehicle should contribute a bidirectional power flow capability. Converter suitable for an energy storage system should have an isolation. Several multi stage topologies are familiar to us which contribute the following application. An AC-DC single stage three phase power converter with high-frequency isolator is discussed here. Mostly Dual Active Bridge (DAB) converters are used because of their high-power density, better efficiency, and application in medium power. Here a bidirectional charger using dual active bridge topology based on the single-stage conversion of AC-DC is presented. The detailed analysis of the system operation with simulation results confirms the analytical predictions.

Keywords: Bidirectional Converter, Dual Active Bridge (DAB), Single-stage Conversion.