Buck-Type Current Unfolding Converter With Discontinuous Conduction Mode in Ultra-Low Power-Factor Operation

Mannen, T; Seo, B; Isobe, T; Pham, HN

Buck-Type Current Unfolding Converter With Discontinuous Conduction Mode in Ultra-Low Power-Factor Operation

Mannen, T Seo, B Isobe, T Pham, HN

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Publisher:: VDE Verlag
Publication Type:: Conference Proceeding
Citation:: PCIM Europe Conference Proceedings, 2024, 2024-June, pp. 831-836
Issue Date:: 2024-01-01

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Field	Value	Language
dc.contributor.author	Mannen, T
dc.contributor.author	Seo, B
dc.contributor.author	Isobe, T
dc.contributor.author	Pham, HN
dc.date	2024-06-11
dc.date.accessioned	2025-06-24T04:59:01Z
dc.date.available	2025-06-24T04:59:01Z
dc.date.issued	2024-01-01
dc.identifier.citation	PCIM Europe Conference Proceedings, 2024, 2024-June, pp. 831-836
dc.identifier.isbn	978-3-8007-6262-0
dc.identifier.issn	2191-3358
dc.identifier.uri	http://hdl.handle.net/10453/187894
dc.description.abstract	This paper proposes a control method for a buck-type current unfolding converter, especially operating under non-unity power factor. The proposed method utilizes discontinuous conduction mode (DCM) to control the inductor current. DCM enables the converter to drastically reduce its inductors and allows the current controller to handle step changes in current due to non-unity power factor operations. Furthermore, this method enables the application of a feedforward-based control strategy by utilizing DCM, thereby eliminating the need for current sensors in the converter. Experimental results demonstrate sinusoidal output current waveforms at both unity and zero power factors, achieved without any current sensors in the converter prototype. These results confirm the effectiveness of the proposed method, particularly its robust current control capabilities. The proposed method is expected to increase the switching frequency and reduce the size of the passive components.
dc.language	en
dc.publisher	VDE Verlag
dc.relation.ispartof	PCIM Europe Conference Proceedings
dc.relation.ispartof	International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
dc.relation.isbasedon	10.30420/566262101
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.title	Buck-Type Current Unfolding Converter With Discontinuous Conduction Mode in Ultra-Low Power-Factor Operation
dc.type	Conference Proceeding
utslib.citation.volume	2024-June
utslib.location.activity	Nürnberg, Germany
pubs.organisational-group	University of Technology Sydney
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
utslib.copyright.status	open_access	*
pubs.consider-herdc	false
dc.date.updated	2025-06-24T04:58:59Z
pubs.finish-date	2024-06-13
pubs.place-of-publication	Germany
pubs.publication-status	Published
pubs.start-date	2024-06-11
pubs.volume	2024-June
dc.location	Germany

Abstract:

This paper proposes a control method for a buck-type current unfolding converter, especially operating under non-unity power factor. The proposed method utilizes discontinuous conduction mode (DCM) to control the inductor current. DCM enables the converter to drastically reduce its inductors and allows the current controller to handle step changes in current due to non-unity power factor operations. Furthermore, this method enables the application of a feedforward-based control strategy by utilizing DCM, thereby eliminating the need for current sensors in the converter. Experimental results demonstrate sinusoidal output current waveforms at both unity and zero power factors, achieved without any current sensors in the converter prototype. These results confirm the effectiveness of the proposed method, particularly its robust current control capabilities. The proposed method is expected to increase the switching frequency and reduce the size of the passive components.

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http://hdl.handle.net/10453/187894