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Single-switch high step-up DC–DC converter with low and steady switch voltage stress
journal contribution
posted on 2023-05-21, 06:23 authored by Waqas HassanWaqas Hassan, Lu, DD-C, Xiao, WIn 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%.
History
Publication title
I E E E Transactions on Industrial ElectronicsVolume
66Issue
12Pagination
9326-9338ISSN
0278-0046Department/School
School of EngineeringPublisher
Ieee-Inst Electrical Electronics Engineers IncPlace of publication
445 Hoes Lane, Piscataway, USA, Nj, 08855Rights statement
Copyright 2019 IEEERepository Status
- Restricted