Title :
A Comparison of Zero-Voltage and Zero-Current Switching Phase-Shifted PWM DC-DC Converters
Author :
Jangwanitlert, A. ; Songboonkaew, J.
Author_Institution :
Fac. of Eng., King Mongkut´´s Inst. of Technol., Bangkok
Abstract :
This paper presents a comparative study between an improved full-bridge (FB) zero-voltage and zero-current switching (ZVZCS) phase-shifted pulsewidth modulation (PS-PWM) DC-DC converter and an improved three-level (TL) ZVZCS PS-PWM DC-DC converter. Both converters operate at fixed frequency and achieve zero-voltage-switching on the leading leg of FB or outer switches of TL, and also achieve zero-current-switching on lagging leg of FB or inner switches of TL. To compare the improved FB-ZVZCS-PS-PWM DC-DC converter, the improved TL-ZVZCS-PS-PWM DC-DC converter is that the voltage across the switches is the half of the input voltage. In addition, the operational intervals and analysis are presented. Both prototypes operating at 30 kHz, rated at 300 V input voltage of FB and at 600 V input voltage of TL, and 1 kW output power at 42 V rated output voltage, have been constructed and tested in laboratory
Keywords :
DC-DC power convertors; PWM power convertors; bridge circuits; phase shifters; switching convertors; zero current switching; zero voltage switching; 1 kW; 30 kHz; 300 V; 42 V; 600 V; full-bridge zero-voltage and zero-current switching converters; phase-shifted PWM DC-DC converters; pulsewidth modulation DC-DC converter; three-level converter; zero-voltage-switching; DC-DC power converters; Frequency conversion; Leg; Phase modulation; Pulse width modulation; Pulse width modulation converters; Switches; Switching converters; Zero current switching; Zero voltage switching; Three-Level; Zero-voltage and Zero-Current Switching;
Conference_Titel :
Power Electronics and Drives Systems, 2005. PEDS 2005. International Conference on
Conference_Location :
Kuala Lumpur
Print_ISBN :
0-7803-9296-5
DOI :
10.1109/PEDS.2005.1619667
