Title :
A family of bidirectional DC/DC converters suitable for asymmetrical power flow requirement
Author :
Wu Chen ; Guangjiang Wang ; Xu Zhu
Author_Institution :
Jiangsu Provincial Key Lab. of Smart Grid Technol. & Equip. Sch. of Electr. Eng., Southeast Univ., Nanjing, China
Abstract :
Bidirectional converters can realize bidirectional power transmission, which functionally equivalent to two unidirectional converters, hence, system size can be significantly reduced and power density can be increased. Based on the requirement of large power difference between bidirectional transmissions in some renewable energy applications, a family of bidirectional DC/DC converter with asymmetrical power transmission capability is proposed. Compared with the conventional one, the proposed bidirectional converter has the following advantages: lower cost, simple circuit topology and control. The potential applications of the proposed bidirectional converter are introduced and the topology derivation process is presented. The operation principle of the proposed bidirectional converter is verified by a 2.5 kW prototype converter.
Keywords :
DC-DC power convertors; load flow; asymmetrical power flow requirement; asymmetrical power transmission capability; bidirectional DC-DC converters; bidirectional power transmission; circuit topology; power 2.5 kW; power density; power difference; renewable energy application; system size; topology derivation process; unidirectional converter; DC-DC power converters; Insulated gate bipolar transistors; Load flow; Power supplies; Power transmission; Topology; Wind farms;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2013 IEEE
Conference_Location :
Denver, CO
DOI :
10.1109/ECCE.2013.6647357
