Design of a bidirectional power interface for V2G technology with smaller DC-link capacitance

Author(s): Zirui Jia*, Liyuan Chen
College of Electrical Engineering, Zhejiang University, No.38 Zheda Road, Hangzhou (310027), China
International Journal of Smart Grid and Clean Energy, vol. 3, no. 1, January 2014: pp. 104-110

ISSN: 2315-4462 (Print)
ISSN: 2373-3594 (Online)
Digital Object Identifier: 10.12720/sgce.3.1.104-110

Abstract: A configuration of a single-phase full-bridge AC-DC converter and dual active bridge (DAB) converter used in V2G (vehicle to grid) and G2V (grid to vehicle) technology is proposed in this paper. It can well realize the bi-directional energy fluidity. The numerous controllers can be designed by MATLAB SISOTOOL easily and quickly. And PLECS software is used to validate the function of the proposed system. In addition, a power decoupling method for this power interface is presented and verified. The simulation results show this configuration works well in V2G application and the DC-link capacitance could be reduced remarkably using proposed method.

Keywords: Bi-directional power interface, high power density, power decoupling, low harmonic distortion

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