Hybrid cascaded high step-up DC/DC converter with continuous input current for renewable energy applications

Hasanpour, S; Siwakoti, Y; Blaabjerg, F

Hybrid cascaded high step-up DC/DC converter with continuous input current for renewable energy applications

Hasanpour, S Siwakoti, Y

Blaabjerg, F

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Publisher:: Institution of Engineering and Technology (IET)
Publication Type:: Journal Article
Citation:: IET Power Electronics, 2020, 13, (15), pp. 3487-3495
Issue Date:: 2020-11-25

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Field	Value	Language
dc.contributor.author	Hasanpour, S
dc.contributor.author	Siwakoti, Y https://orcid.org/0000-0002-3869-412X
dc.contributor.author	Blaabjerg, F
dc.date.accessioned	2021-02-07T19:36:57Z
dc.date.available	2021-02-07T19:36:57Z
dc.date.issued	2020-11-25
dc.identifier.citation	IET Power Electronics, 2020, 13, (15), pp. 3487-3495
dc.identifier.issn	1755-4535
dc.identifier.issn	1755-4543
dc.identifier.uri	http://hdl.handle.net/10453/145901
dc.description.abstract	© The Institution of Engineering and Technology 2020. This study proposes a new structure of hybrid cascade coupled-inductor high step-up (HCCIHSU) DC/DC converter for renewable energy sources. The proposed topology can provide an ultra-high voltage gain under continuous input current and low voltage stress on semiconductor devices. This converter is a hybrid cascade connection of the boost and buck–boost converters. The HCCIHSU utilises a coupled-inductor (CI) and a voltage multiplier (VM) cell to enhance the voltage gain ratio as a semi-quadratic function. The magnetic energy of the leakage inductor of the CI is recycled to the VM capacitors that reduce the component voltage stress and improve the converter voltage gain. Additionally, the voltage stress on the main power switch is clamped by two passive clamp capacitors. Due to the very high voltage conversion ratio at a reduced turn's ratio, the maximum voltage stresses on the switches and diodes are significantly alleviated, which further improve the efficiency. In this study, detailed steady-state analysis and comparisons with other related converters are provided. Finally, a 160 W/200 V laboratory prototype is built with 24 V input voltage at a switching frequency of 50 kHz to verify the performance of the proposed converter.
dc.language	en
dc.publisher	Institution of Engineering and Technology (IET)
dc.relation.ispartof	IET Power Electronics
dc.relation.isbasedon	10.1049/iet-pel.2020.0544
dc.rights	This paper is a postprint of a paper submitted to and accepted for publication in IET Power Electronics and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at the IET Digital Library.	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0906 Electrical and Electronic Engineering
dc.subject.classification	Electrical & Electronic Engineering
dc.title	Hybrid cascaded high step-up DC/DC converter with continuous input current for renewable energy applications
dc.type	Journal Article
utslib.citation.volume	13
utslib.for	0906 Electrical and Electronic Engineering
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
dc.date.updated	2021-02-07T19:36:34Z
pubs.issue	15
pubs.publication-status	Published
pubs.volume	13
utslib.citation.issue	15

Abstract:

© The Institution of Engineering and Technology 2020. This study proposes a new structure of hybrid cascade coupled-inductor high step-up (HCCIHSU) DC/DC converter for renewable energy sources. The proposed topology can provide an ultra-high voltage gain under continuous input current and low voltage stress on semiconductor devices. This converter is a hybrid cascade connection of the boost and buck–boost converters. The HCCIHSU utilises a coupled-inductor (CI) and a voltage multiplier (VM) cell to enhance the voltage gain ratio as a semi-quadratic function. The magnetic energy of the leakage inductor of the CI is recycled to the VM capacitors that reduce the component voltage stress and improve the converter voltage gain. Additionally, the voltage stress on the main power switch is clamped by two passive clamp capacitors. Due to the very high voltage conversion ratio at a reduced turn's ratio, the maximum voltage stresses on the switches and diodes are significantly alleviated, which further improve the efficiency. In this study, detailed steady-state analysis and comparisons with other related converters are provided. Finally, a 160 W/200 V laboratory prototype is built with 24 V input voltage at a switching frequency of 50 kHz to verify the performance of the proposed converter.

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http://hdl.handle.net/10453/145901