Development of Bidirectional AC-DC Converter for Energy Storage Systems

In this paper, we deals with the design problems of bidirectional AC-DC converters for charge/ discharge control and grid connection of energy storage system. The bidirectional DC-DC converter will be designed and implemented as a noninverting buck-boost type topology. The buck mode will be operated in the charge mode and the boost mode will also be operated in the discharge mode. In charge mode, the AC-DC converter will be controlled to operate as a bridge diode rectifier utilizing the reverse diode of the bi-directional switch. In the discharge mode, the six switches of the DC-AC converter will be controlled by the SPWM method.