Boost Converter With Coupled Inductors and Buck–Boost Type of Active Clamp
Tsai-Fu Wu
Yu-Sheng Lai
Jin-Chyuan Hung
Yaow-Ming Chen
Nat. Chung Cheng Univ., Min-Hsiung;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Jan. 2008
Volume: 55,
Issue: 1
On page(s): 154-162
ISSN: 0278-0046
INSPEC Accession Number: 9756569
Digital Object Identifier: 10.1109/TIE.2007.903925
Current Version Published: 2008-01-04
Abstract
This paper proposes a boost converter with coupled inductors and a buck-boost type of active clamp. In the converter, the active-clamp circuit is used to eliminate the voltage spike that is induced by the trapped energy in the leakage inductor of the coupled inductors. The active switch in the converter can still sustain a proper duty ratio even under high step-up applications, reducing voltage and current stresses significantly. Moreover, since both main and auxiliary switches can be turned on with zero-voltage switching, switching loss can be reduced, and conversion efficiency therefore can be improved significantly. A 200 W prototype of the proposed boost converter was built, from which experiment results have shown that efficiency can reach as high as 92% and surge can be suppressed effectively. It is relatively feasible for low-input-voltage applications, such as fuel cell and battery power conversion.
Index
Terms
Available to subscribers and IEEE members.
References
Available to subscribers and IEEE members.
Citing Documents
Available to subscribers and IEEE members.
Cart
