Bi-directional Power Converters
Technical Lecture Session
Photovoltaic (PV) Inverters and Micro Inverters
DC-AC Converter, Dual Active Bridge, PV Microinverter, Data Center Power Supply
This paper proposes a novel bidirectional single stage ac-dc dual active bridge(DAB) converter for grid-tied applications. The converter uses only eight swithces and features multiphase boost interfaces at both ac and dc ports. Moreover, the floating nature of the dc bus capacitors at both the full-bridges makes the converter suitable for cascaded applications. The converter operating principle and control strategy are explained. Finally the feasibility of the operation principle is confirmed by experimental results obtained from test conducted on a prototype at 600W.