Title :
A new ZVS-PWM full-bridge step-up/down converter
Author :
Wang, Chien-Ming ; Wang, Yen-Nien ; Yang, Chia-Hao
Author_Institution :
Dept. of Electron. Eng., Lunghwa Univ. of Sci. & Technol., Taoyuan, Taiwan
Abstract :
A novel zero-voltage-switching pulse-width-modulation (ZVS-PWM) full-bridge transformer-isolated step-up/down converter is proposed in this paper. The output voltage of the proposed converter can be larger or lower than the DC input voltage, depending on the instantaneous duty-cycle. This property is not found in the classical full-bridge transformer-isolated converter. Furthermore, in the proposed converter, besides operating at constant frequency, all semiconductor devices operate at soft-switching without additional voltage stress and current stress. An average approach is employed to analyze the system. A design example of 1000 W ZVS-PWM full-bridge converter is examined to assess the converter performance.
Keywords :
DC-DC power convertors; PWM invertors; power semiconductor devices; switching convertors; zero voltage switching; 1000 W; DC input voltage; ZVS-PWM converter; constant frequency; full-bridge transformer-isolated step-up/down converter; instantaneous duty-cycle; semiconductor devices; zero-voltage-switching pulse-width-modulation converter; DC-DC power converters; Electromagnetic interference; Pulse width modulation; Pulse width modulation converters; Semiconductor devices; Stress; Switches; Switching circuits; Switching converters; Voltage;
Conference_Titel :
Industrial Electronics Society, 2004. IECON 2004. 30th Annual Conference of IEEE
Print_ISBN :
0-7803-8730-9
DOI :
10.1109/IECON.2004.1433436
