Analysis and design of an energy regenerative snubber for magnetically coupled impedance source converters

Forouzesh, M; Abdelhakim, A; Siwakoti, Y; Blaabjerg, F

Analysis and design of an energy regenerative snubber for magnetically coupled impedance source converters

Forouzesh, M Abdelhakim, A Siwakoti, Y

Blaabjerg, F

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Publication Type:: Conference Proceeding
Citation:: Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, 2018, 2018-March pp. 2555 - 2561
Issue Date:: 2018-04-18

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Field	Value	Language
dc.contributor.author	Forouzesh, M	en_US
dc.contributor.author	Abdelhakim, A	en_US
dc.contributor.author	Siwakoti, Y https://orcid.org/0000-0002-3869-412X	en_US
dc.contributor.author	Blaabjerg, F	en_US
dc.date.issued	2018-04-18	en_US
dc.identifier.citation	Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, 2018, 2018-March pp. 2555 - 2561	en_US
dc.identifier.isbn	9781538611807	en_US
dc.identifier.uri	http://hdl.handle.net/10453/128523
dc.description.abstract	© 2018 IEEE. Magnetically coupled impedance source (MCIS) converters are prone to high voltage spikes across the inverter bridge (or dc-link) due to the presence of leakage and stray inductances in the high frequency loop. The problem manifolds because of a shoot-through state in impedance source converters, which avoids application of a decoupling dc-link capacitor. This makes the impedance source converter less attractive for industry applications despite of its merits over the conventional voltage-fed and current-fed inverters. Only few attempts have been made in the literature to solve this problem, but the solutions are not generic (i.e. structure-oriented) and they are quite lossy with intuitive modification in the circuit itself, resulting in significant changes in the performance of the power converter (e.g. increase in components stresses). To address this concern, a general passive regenerative inductor-capacitor-diode (L-C-D) snubber is presented in this paper for all MCIS converters without any modification in the original circuit. The proposed circuit rechannel the leakage energy of the coupled magnetics and feedback it to input or network itself, which does not only avoid extreme voltage spikes across the inverter bridge but also improves the efficiency of the system. In this paper, the analysis of the proposed snubber is introduced with simulation results and experimental implementation of the proposed snubber in a 500 W three-phase quasi-Y-source inverter (qYSI) to verify the efficacy of the proposed solution.	en_US
dc.relation.ispartof	Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC	en_US
dc.relation.isbasedon	10.1109/APEC.2018.8341377	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	Analysis and design of an energy regenerative snubber for magnetically coupled impedance source converters	en_US
dc.type	Conference Proceeding
utslib.citation.volume	2018-March	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
pubs.embargo.period	Not known	en_US
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	closed_access	*
pubs.publication-status	Published	en_US
pubs.volume	2018-March	en_US

Abstract:

© 2018 IEEE. Magnetically coupled impedance source (MCIS) converters are prone to high voltage spikes across the inverter bridge (or dc-link) due to the presence of leakage and stray inductances in the high frequency loop. The problem manifolds because of a shoot-through state in impedance source converters, which avoids application of a decoupling dc-link capacitor. This makes the impedance source converter less attractive for industry applications despite of its merits over the conventional voltage-fed and current-fed inverters. Only few attempts have been made in the literature to solve this problem, but the solutions are not generic (i.e. structure-oriented) and they are quite lossy with intuitive modification in the circuit itself, resulting in significant changes in the performance of the power converter (e.g. increase in components stresses). To address this concern, a general passive regenerative inductor-capacitor-diode (L-C-D) snubber is presented in this paper for all MCIS converters without any modification in the original circuit. The proposed circuit rechannel the leakage energy of the coupled magnetics and feedback it to input or network itself, which does not only avoid extreme voltage spikes across the inverter bridge but also improves the efficiency of the system. In this paper, the analysis of the proposed snubber is introduced with simulation results and experimental implementation of the proposed snubber in a 500 W three-phase quasi-Y-source inverter (qYSI) to verify the efficacy of the proposed solution.

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http://hdl.handle.net/10453/128523