A common-ground single-phase five-level transformerless boost inverter for photovoltaic applications

Shaffer, B; Hassan, HA; Scott, MJ; Hasan, SU; Town, GE; Siwakoti, Y

A common-ground single-phase five-level transformerless boost inverter for photovoltaic applications

Shaffer, B Hassan, HA Scott, MJ Hasan, SU

Town, GE Siwakoti, Y

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Publication Type:: Conference Proceeding
Citation:: Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, 2018, 2018-March pp. 368 - 374
Issue Date:: 2018-04-18

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Field	Value	Language
dc.contributor.author	Shaffer, B	en_US
dc.contributor.author	Hassan, HA	en_US
dc.contributor.author	Scott, MJ	en_US
dc.contributor.author	Hasan, SU https://orcid.org/0000-0001-9462-7952	en_US
dc.contributor.author	Town, GE	en_US
dc.contributor.author	Siwakoti, Y https://orcid.org/0000-0002-3869-412X	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. 368 - 374	en_US
dc.identifier.isbn	9781538611807	en_US
dc.identifier.uri	http://hdl.handle.net/10453/128515
dc.description.abstract	© 2018 IEEE. This paper presents a transformerless five-level boost inverter with common ground connection for single-phase photovoltaic (PV) systems. It consists of nine switches, two capacitors, and an LC filter at the output. The topology eliminates common mode (CM) leakage current by connecting the negative terminal of the PV directly to the neutral point of the grid, which bypasses the PV array's stray capacitance. As compared to the conventional flying capacitor (FC) multilevel inverter and the cascaded H-bridge (CHB) multilevel inverter, the proposed topology achieves an output voltage that is up to four-times higher given an equivalent dc-link voltage. This reduces the dc-link voltage requirement to one fourth of the values used in conventional multilevel inverters (FC, CHB, NPC, ANPC) and one half of the conventional H-bridge topologies. The following manuscript presents the operation principles and theoretical analysis of the proposed topology, which are supported by simulation and experimental results. A 1 kW prototype was constructed; it achieves 96 % efficiency operating at an output of 240 VAC, 60 Hz, and 973 W.	en_US
dc.relation.ispartof	Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC	en_US
dc.relation.isbasedon	10.1109/APEC.2018.8341037	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	A common-ground single-phase five-level transformerless boost inverter for photovoltaic applications	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. This paper presents a transformerless five-level boost inverter with common ground connection for single-phase photovoltaic (PV) systems. It consists of nine switches, two capacitors, and an LC filter at the output. The topology eliminates common mode (CM) leakage current by connecting the negative terminal of the PV directly to the neutral point of the grid, which bypasses the PV array's stray capacitance. As compared to the conventional flying capacitor (FC) multilevel inverter and the cascaded H-bridge (CHB) multilevel inverter, the proposed topology achieves an output voltage that is up to four-times higher given an equivalent dc-link voltage. This reduces the dc-link voltage requirement to one fourth of the values used in conventional multilevel inverters (FC, CHB, NPC, ANPC) and one half of the conventional H-bridge topologies. The following manuscript presents the operation principles and theoretical analysis of the proposed topology, which are supported by simulation and experimental results. A 1 kW prototype was constructed; it achieves 96 % efficiency operating at an output of 240 VAC, 60 Hz, and 973 W.

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http://hdl.handle.net/10453/128515