Design considerations for DC charging station for plug-in vehicles

Author

Bai, Sanzhong ; Lukic, Srdjan

Author_Institution

FREEDM Syst. Center, North Carolina State Univ., Raleigh, NC, USA

fYear

2011

Firstpage

1

Lastpage

6

Abstract

This paper looks at the optimizing the electric vehicle supply equipment (EVSE) design for level 3 DC charging stations. By studying the power demand of the charging station, we conclude that the size of the grid tie can be reduced substantially by sizing for average rather than the peak power demand. Therefore the charging station architecture with a single AC/DC conversion and a DC distribution to DC/DC charging units is proposed. An energy storage system connected to the DC bus is used to supply power when the demand exceeds the capability of the grid tie. Specifically, this paper looks at the integration of energy storage on the DC bus to (1) provide power to the chargers in instances when their requirements exceed the grid tie capability (2) eliminate DC side ripple and (3) eliminate AC side harmonics.

Keywords

AC-DC power convertors; DC-DC power convertors; electric vehicles; AC side harmonic elimination; DC bus; DC distribution; DC side ripple elimination; DC-DC charging units; design considerations; electric vehicle supply equipment design; energy storage system; grid tie capability; level 3 DC charging stations; peak power demand; plug-in vehicles; single AC-DC conversion; Active filters; Batteries; Harmonic analysis; Power harmonic filters; Rectifiers; Vehicles;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicle Power and Propulsion Conference (VPPC), 2011 IEEE

Conference_Location

Chicago, IL

ISSN

Pending

Print_ISBN

978-1-61284-248-6

Electronic_ISBN

Pending

Type

conf

DOI

10.1109/VPPC.2011.6043092

Filename

6043092