Review of Electric Vehicle V2G Technology

Abstract

At present the V2G (vehicle to grid) technology is drawing people’s attention, which can relieve the problems of low grid efficiency and renewable energy fluctuation, and also bring EV owners profits. In this paper the concept and evaluation of V2G are firstly described, then the implement method is classified according to different objects. The paper reviews the key problems which are referred to by V2G, such as intelligent dispatching and intelligent charging/discharging management, bi-directional charger as well as the effect of V2G on battery, and introduces the research in China. Finally the key technologies are concluded as well as the developing trends, and some advices are given according to the condition of China.