Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Smart Panel Board for EV Standard Chargers and Its Control Method
Authors Myeong-Soo Kim and Soon-Chan Hong ;
DOI 10.6113/TKPE/2014.19.6.511
Page pp.511-521
ISSN 1229-2214
Keywords EVs(electric vehicles); Charger; Inverter; Charging scheduling control; Current unbalance
Abstract This study proposes an electric vehicle (EV) smart panel board and its control method on the basis of charging scheduling. The proposed system consists of batteries, a three-phase battery charger, three single-phase inverters, transfer switches for electric power distribution, and a controller. The three-phase battery charger usually charges the batteries at midnight when electric rates are cheap and in light load. When the electric power consumption of the EV standard chargers connected to one phase of the power line is relatively large or when a blackout occurs, the electric power stored in the battery is supplied by discharging through the inverters to the EV standard chargers. As a result, the value of peak load and the charging electric power quantity supplied from a utility grid are reduced, and the current unbalance is improved. The usefulness of the proposed system is confirmed through simulations, experiments, and case studies.