A compact, high-efficiency, high-power DC/DC converter

Author

Yamamoto, Katsuhiko ; Sugai, Tomoji ; Tanaka, Koichi

Author_Institution

Interdisciplinary Res. Lab., NTT, Tokyo, Japan

Volume

2

fYear

1993

fDate

27-30 Sep 1993

Firstpage

251

Abstract

A 10 kW (53 V/200 A), forced-air-cooled DC-DC power converter has been developed for fuel cell systems. This converter uses a new HV bipolar-mode static induction transistor (BSIT), a new driving method, a ZVS PWM technique and a new litz wire with low AC resistance. It weights only 16.5 kg, has a volume of 26,000 cm³, operates at 40 kHz and has a power conversion efficiency of about 95%. The power loss of this converter been reduced by 20% with respect to a conventional natural-air-cooled DC-DC converter for a power density 3 times superior

Keywords

DC-DC power convertors; PWM power convertors; bipolar transistor switches; cooling; driver circuits; fuel cells; power bipolar transistors; power semiconductor switches; static induction transistors; switching circuits; 10 kW; 16.5 kg; 200 A; 40 kHz; 53 V; 95 percent; AC resistance; DC-DC power converter; ZVS PWM; bipolar-mode static induction transistor; driving method; forced air cooling; fuel cells; litz wire; power SIT; power density; power loss; DC-DC power converters; Power semiconductor switches; Power supplies; Pulse width modulation; Pulse width modulation converters; Switching converters; Switching frequency; Ventilation; Wire; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Telecommunications Energy Conference, INTELEC '93. 15th International

Conference_Location

Paris

Print_ISBN

0-7803-1842-0

Type

conf

DOI

10.1109/INTLEC.1993.388564

Filename

388564