Title :
A new ZVZCS full bridge converter with an auxiliary center tapped rectifier
Author :
Wu, Xinke ; Zhao, Chen ; Zhang, Junming ; Qian, Zhaoming
Author_Institution :
Coll. of Electr. Eng., Zhejiang Univ., Hangzhou, China
Abstract :
A new ZVZCS full bridge DC-DC converter is proposed based on the phase shift control. With an auxiliary center tapped rectifier a voltage source is gained to reset the primary current of the transformer winding. Therefore ZVS for the leading lag switches and ZCS for the lagging leg switches can be achieved respectively without any increase of current and voltage stresses. This converter also can achieve high efficiency by reducing the circulating energy and employing Schottky diodes as rectifier diodes, especially in high input voltage applications. A 1 kW prototype is made to verify the theoretical analysis.
Keywords :
Schottky diodes; phase control; rectifiers; switching convertors; transformer windings; zero current switching; zero voltage switching; 1 kW; Schottky diode; ZVZCS full bridge DC-DC converter; auxiliary center tapped rectifier; circulating energy reduction; current stress; lagging leg switch; leading lag switch; phase shift control; rectifier diode; transformer winding; voltage stress; Bridge circuits; DC-DC power converters; Leg; Rectifiers; Schottky diodes; Stress; Switches; Windings; Zero current switching; Zero voltage switching;
Conference_Titel :
Telecommunications Energy Conference, 2004. INTELEC 2004. 26th Annual International
Print_ISBN :
0-7803-8458-X
DOI :
10.1109/INTLEC.2004.1401486
