Title :
Analysis and Design for a New ZVS DC–DC Converter With Active Clamping
Author :
Wu, Xinke ; Zhang, Junming ; Ye, Xin ; Qian, Zhaoming
Author_Institution :
Coll. of Electr. Eng., Zhejiang Univ., Hangzhou
Abstract :
A new zero voltage switching (ZVS) boost converter is presented in this paper. By using an auxiliary switch and a capacitor, ZVS for all switches is achieved with an auxiliary winding in one magnetic core. A small diode is added to eliminate the voltage ringing across the main rectifier diode. This clamping technique can also be utilized in other dc-dc converters, and a family of new ZVS dc-dc converter is derived. A prototype (500 W/193 kHz) is made to verify the theoretical analysis. The efficiency is higher than 94% at 90-V input at full load
Keywords :
DC-DC power convertors; design engineering; diodes; magnetic cores; rectifying circuits; switching convertors; windings; zero voltage switching; 193 kHz; 500 W; ZVS; active damping; auxiliary winding; boost converter; capacitor; dc-dc converter; magnetic core; rectifier diode; small diode; voltage ringing elimination; zero voltage switching; Capacitors; Clamps; DC-DC power converters; Diodes; Magnetic analysis; Magnetic cores; Magnetic switching; Switches; Switching converters; Zero voltage switching; Active clamping; boost; zero voltage switching (ZVS);
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2006.882970
