Design considerations and topology selection for a 120-kW IGBT converter for EV fast charging

Author

Kutkut, Nasser H. ; Divan, Deepak M. ; Novotny, Donald W. ; Marion, Raymond H.

Author_Institution

Soft Switching Technol. Corp., Middleton, WI, USA

Volume

13

Issue

1

fYear

1998

fDate

1/1/1998 12:00:00 AM

Firstpage

169

Lastpage

178

Abstract

Fast charging of electric vehicles (EVs) is a very desirable feature, especially for long-distance travel. For an EV with a battery capacity of 30 kWh, a 15-min charge requires 120-kW charging power. Inductive charging offers a safe and convenient means to accomplish this task. This paper investigates the design criteria of the high-power converter for a 120-kW inductive battery charger. Since insulated gate bipolar transistors (IGBTs) are the devices of choice at this power level, the impact of IGBT losses on the converter design and topology selection is investigated. A comparison between a zero-voltage-switching (ZVS) and zero-current-switching (ZCS) series-resonant converter (SRC) is presented. Based on the comparison results, a ZCS SRC topology is selected for this application, and an experimental 120-kW/75-kHz unit was built and tested in the laboratory to verify the results

Keywords

battery chargers; electric vehicles; electromagnetic induction; insulated gate bipolar transistors; losses; power semiconductor switches; resonant power convertors; switching circuits; 120 kW; 30 kWh; 75 kHz; IGBT converter; IGBT losses; ZCS; ZVS; battery; electric vehicles; fast charging; high-power converter; inductive battery charger; inductive charging; insulated gate bipolar transistors; series-resonant converter; topology selection; zero-current-switching; zero-voltage-switching; Batteries; Electric vehicles; Frequency conversion; Insulated gate bipolar transistors; Power transformer insulation; Switching converters; Testing; Topology; Zero current switching; Zero voltage switching;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.654972

Filename

654972