Title :
A combined front end DC/DC converter
Author :
Xing, Yan ; Huang, Lipei ; Cai, Xuansan ; Sun, Stan
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
Holdup time is a special requirement for front end DC/DC converters. It forces the converter to operate in a wide range for input voltage, which greatly degrades the converter´s normal efficiency. In this paper a new front end DC/DC converter, a novel combination of an asymmetrical half bridge and a baby-boost with special control, is proposed. The baby-boost stands by under normal conditions and operates inherently only during the hold up time. As a result, the performances of high efficiency, power density and wide range of input voltage are all obtained. Topology and operation principles are presented with simulated and experimental results given in detail.
Keywords :
DC-DC power convertors; bridge circuits; asymmetrical half bridge converters; baby-boost converters; converters normal efficiency; distributed power system; front end DC-DC converter topology; holdup time; input voltage range; power density; simulation; Bridge circuits; Computational modeling; DC-DC power converters; Degradation; Iron; Power system simulation; Stress; Switches; Topology; Zero voltage switching;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2003. APEC '03. Eighteenth Annual IEEE
Conference_Location :
Miami Beach, FL, USA
Print_ISBN :
0-7803-7768-0
DOI :
10.1109/APEC.2003.1179353
