A High Frequency ZVS Isolated Dual Boost Converter with Holdup Time Extension Capability

Author

Bing Lu ; Ming Xu ; Chunayin Wang ; Lee, Fred C. ; Lee, Namyoon ; Yuan Yu

Author_Institution

Bradley Dept. of Electr. & Comput. Eng., Virginia Tech, Blacksburg, VA

fYear

2006

fDate

18-22 June 2006

Firstpage

1

Lastpage

6

Abstract

Bulky holdup time capacitor prevents further increasing power density of front-end AC/DC converters. Instead of using auxiliary circuits, a high frequency isolated dual boost converter is proposed to reduce holdup time capacitor. ZVS can be achieved for both primary side and secondary side switches. Moreover, low voltage stress on the secondary side devices and simple synchronous rectification control make the topology attractive for low output voltage applications. The converter operates optimally under normal condition with wide input voltage range. Based on theoretical analysis, the proposed converter can reduce holdup time capacitor from 1000 muF to 440 muF with 1200 W output power

Keywords

AC-DC power convertors; rectification; switching convertors; zero voltage switching; 1000 to 440 muF; 1200 W; auxiliary circuits; front-end AC/DC converters; high frequency ZVS isolated dual boost converter; holdup time capacitor reduction; holdup time extension capability; low voltage stress; power density; primary side switches; secondary side switches; synchronous rectification control; Circuit topology; DC-DC power converters; Frequency conversion; Low voltage; Power generation; Stress control; Switched capacitor circuits; Switches; Voltage control; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2006. PESC '06. 37th IEEE

Conference_Location

Jeju

ISSN

0275-9306

Print_ISBN

0-7803-9716-9

Type

conf

DOI

10.1109/PESC.2006.1712117

Filename

1712117