Novel High Step-Up DC-DC Converter With Coupled-Inductor and Switched-Capacitor Techniques

A novel high step-up dc-dc converter with coupled-inductor and switched-capacitor techniques is proposed in this paper. The capacitors are charged in parallel and are discharged in series by the coupled inductor, stacking on the output capacitor. Thus, the proposed converter can achieve high step-up...

Full description

Saved in:
Bibliographic Details
Published inIEEE transactions on industrial electronics (1982) Vol. 59; no. 2; pp. 998 - 1007
Main Authors Hsieh, Yi-Ping, Chen, Jiann-Fuh, Liang, Tsorng-Juu, Yang, Lung-Sheng
Format Journal Article
LanguageEnglish
Published IEEE 01.02.2012
Subjects
Capacitors
Converters
Coupled-inductor
high step-up voltage gain
Inductors
Magnetomechanical effects
Stacking
Stress
switched capacitor
Switches
Online AccessGet full text

Cover

More Information
Summary:A novel high step-up dc-dc converter with coupled-inductor and switched-capacitor techniques is proposed in this paper. The capacitors are charged in parallel and are discharged in series by the coupled inductor, stacking on the output capacitor. Thus, the proposed converter can achieve high step-up voltage gain with appropriate duty ratio. Besides, the voltage spike on the main switch can be clamped. Therefore, low on-state resistance R DS(ON) of the main switch can be adopted to reduce the conduction loss. The efficiency can be improved. The operating principle and steady-state analyses are discussed in detail. Finally, a prototype circuit with 24-V input voltage, 400-V output voltage, and 200-W output power is implemented in the laboratory. Experiment results confirm the analysis and advantages of the proposed converter.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2011.2151828