Title :
A family of soft-switching DC-DC power converters to high power applications
Abstract :
This paper presents a family of soft-switching DC-DC power converters, which is suitable for high power applications using IGBTs. These converters present the following characteristics: commutation at zero-current (turn-on and turn-off) for all active switches without overvoltage and overcurrent, commutation at zero-voltage for the free-wheeling diode, and PWM operating at constant frequency. Small power rated auxiliary components can be used. To verify the feasibility of the proposed family of soft-switching DC-DC power converters, the ZCS-PWM boost converter is analyzed. Operating principle, commutation analysis and features are described and verified by experimental results obtained from a prototype operating at 40 kHz, rated at 155 V input voltage and 1.1 kW output power. The measured efficiency to full load was about 98%
Keywords :
DC-DC power convertors; PWM power convertors; commutation; insulated gate bipolar transistors; power semiconductor switches; switching circuits; 1.1 kW; 155 V; 40 kHz; 98 percent; IGBT; PWM operation; ZCS-PWM boost converter; active switches; commutation analysis; high power applications; output power; small power rated auxiliary components; soft-switching DC-DC power converters; turn-off; turn-on; zero current commutation; DC-DC power converters; Diodes; Frequency conversion; Insulated gate bipolar transistors; Prototypes; Pulse width modulation; Pulse width modulation converters; Switches; Switching converters; Voltage control;
Conference_Titel :
Power Electronics Congress, 1996. Technical Proceedings. CIEP '96., V IEEE International
Conference_Location :
Cuernavaca
Print_ISBN :
0-7803-3633-X
DOI :
10.1109/CIEP.1996.618550
