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Single-switch high step-up DC–DC converter with low and steady switch voltage stress

Hassan, W ORCID: 0000-0002-1926-1724, Lu, DD-C and Xiao, W 2019 , 'Single-switch high step-up DC–DC converter with low and steady switch voltage stress' , I E E E Transactions on Industrial Electronics, vol. 66, no. 12 , pp. 9326-9338 , doi: 10.1109/TIE.2019.2893833.

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Abstract

In this paper, a new high voltage gain step-up dc-dc converter is proposed for interfacing renewable power generation. The configuration optimally integrates both the coupled-inductor and switched-capacitor techniques to achieve an ultra-high step-up gain of voltage conversion with low voltage stress and high efficiency. It consists of a voltage boost unit, a passive clamp circuit, and a symmetrical voltage multiplier network. The structure becomes modular and extendable without adding any extra winding for ultra-high step-up voltage gain. The proposed topology not only reduces the voltage stress on the main switch but also maintains it steady for the entire duty cycle range. Furthermore, the reverse recovery issue of the diodes is alleviated through the leakage inductance of the coupled inductor. The operation principle and steady-state analysis are presented in detail. Experimental evaluation validates the claimed advantages and demonstrates a well-distributed efficiency curve and the peak of 96.70%.

Item Type: Article
Authors/Creators:Hassan, W and Lu, DD-C and Xiao, W
Keywords: power converters, DC microgrids, renewable energy
Journal or Publication Title: I E E E Transactions on Industrial Electronics
Publisher: Ieee-Inst Electrical Electronics Engineers Inc
ISSN: 0278-0046
DOI / ID Number: 10.1109/TIE.2019.2893833
Copyright Information:

Copyright 2019 IEEE

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