NDLI: Non-isolated interleaved high step-up converter with reduced voltage multiplier stages and a regenerative turn-off snubber

Content Provider	IEEE Xplore Digital Library
Author	Umetani, K. Hiraki, E. Yamamoto, M.
Copyright Year	2015
Description	Author affiliation: Interdiscipl. Grad. Sch. of Sci. & Eng., Shimane Univ., Matsue, Japan (Yamamoto, M.) \|\| Grad. Sch. of Nature Sci. & Technol., Okayama Univ., Okayama, Japan (Umetani, K.; Hiraki, E.)
Abstract	This paper proposes a novel non-isolated high step-up converter suitable for miniaturization by high frequency design. High step-up converters with voltage multipliers are promising for high frequency design because many of them can be free from coupled inductors or transformers, which may lower the voltage gain due to the leakage inductance or may cause significant AC conduction loss in the primary winding. However, two issues can still hinder further miniaturization. One is that many multiplier stages may be needed to achieve extremely high voltage gain. The other is that high switching frequency may be restricted by severe turn-off voltage surge caused by high speed switching. The proposed converter addresses the former by applying a recently reported technique to a non-isolated boost converter. Additionally, the converter addresses the latter by proposing a simple passive regenerative turn-off snubber implementable only by two diodes and a capacitor. Experiments verified that the proposed converter achieves high voltage gain with fewer voltage multiplier stages compared to prior non-isolated high step-up converters. Additionally, the snubber successfully reduced the turn-off surge into half approximately without apparent deterioration of the efficiency.
Starting Page	125
Ending Page	132
File Size	609962
Page Count	8
File Format	PDF
e-ISBN	9781467371513
DOI	10.1109/ECCE.2015.7309679
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-09-20
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Turn-off snubber Capacitors Snubbers Switches Voltage multiplier High step-up Interleaved boost converter Topology Voltage surge Inductors Surges Stress
Content Type	Text
Resource Type	Article

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