Title :
A compact, high-efficiency, high-power DC/DC converter
Author :
Yamamoto, Katsuhiko ; Sugai, Tomoji ; Tanaka, Koichi
Author_Institution :
Interdisciplinary Res. Lab., NTT, Tokyo, Japan
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;
Conference_Titel :
Telecommunications Energy Conference, INTELEC '93. 15th International
Conference_Location :
Paris
Print_ISBN :
0-7803-1842-0
DOI :
10.1109/INTLEC.1993.388564
