Abstract
This article proposes a high step-up dc-dc converter based on a trans-inverse impedance-source structure, in which the voltage gain of the converter is increased by using a lower number of turns ratio of the coupled inductors (CI) windings. The proposed converter achieves a very high voltage gain and a very low voltage stress on the switches. An active clamp is incorporated into the topology of the proposed converter, helping to absorb the energy of the leakage inductances of the CI, and to recycle that energy to the output of the converter to further increase the voltage gain. Furthermore, the active clamp is used to realize soft turn on for the main switch of the converter. Additionally, the clamp switch also turns on under zero voltage switching condition. Apart from the soft turn on of the switches of the proposed converter, the diodes of the converter also turn off with a minimized reverse recovery power loss because of the controlled current falling rate of these diodes with the leakage inductance of the CI. The operation principle, steady-state analysis, and comparison are presented in this article. Also, the analysis is verified using a 200 W, and 20 V to 400 V experimental setup.
Recommended Citation
S. Habibi et al., "An Impedance-Source-Based Soft-Switched High Step-Up DC-DC Converter With An Active Clamp," IEEE Transactions on Power Electronics, vol. 39, no. 3, pp. 3712 - 3723, Institute of Electrical and Electronics Engineers, Mar 2024.
The definitive version is available at https://doi.org/10.1109/TPEL.2023.3344719
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
Active clamp; coupled inductor; dc-dc converter; high step-up; impedance source
International Standard Serial Number (ISSN)
1941-0107; 0885-8993
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
01 Mar 2024
