Research on Power Supply Mode for Electric Vehicle Charging Devices in Residential Community

In recent years, electric vehicles have an extraordinary development in many countries of the world because of their advantages of emission-free, energy saving and high efficiency. With the increasing use of residential parking with charging piles for electric vehicle, the charge of electric vehicle will have significant impacts on planning and operation of residential distribution system. Firstly, the impacts of on-board charging devices with different electrical characteristics on alternating current power supply were discussed. Additionally, the electrical effects of electric vehicle integration into three typical residential communities were demonstrated. By evaluating harmonic in residential distribution system, three-phase unbalance degree and voltage deviation, two suitable power supply mode for electric vehicle charging devices in residential community and possible entry approval standards of on-board charger were proposed.