A medium-frequency transformer with multiple secondary windings for grid connection through H-bridge voltage source converters

Islam, MR; Guo, Y; Zhu, J

A medium-frequency transformer with multiple secondary windings for grid connection through H-bridge voltage source converters

Islam, MR

Guo, Y

Zhu, J

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Publication Type:: Conference Proceeding
Citation:: ICEMS 2012 - Proceedings: 15th International Conference on Electrical Machines and Systems, 2012
Issue Date:: 2012-12-01

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Field	Value	Language
dc.contributor.author	Islam, MR https://orcid.org/0000-0003-3133-9333	en_US
dc.contributor.author	Guo, Y https://orcid.org/0000-0001-6182-0684	en_US
dc.contributor.author	Zhu, J https://orcid.org/0000-0002-9763-4047	en_US
dc.date.issued	2012-12-01	en_US
dc.identifier.citation	ICEMS 2012 - Proceedings: 15th International Conference on Electrical Machines and Systems, 2012	en_US
dc.identifier.isbn	9784886860774	en_US
dc.identifier.uri	http://hdl.handle.net/10453/32330
dc.description.abstract	Although the power output of today's wind turbine has exceeded 7 MW, the voltage rating of the most common generator is below 700 V. A low-frequency transformer is commonly used to step-up the voltage to the grid voltage level, e.g. 11 kV or 33 kV. These heavy and bulky low-frequency transformers significantly increase the volume and weight of nacelle. To achieve a compact and light nacelle, a medium-voltage converter with series-connected H-bridge (SCHB) topology would be an attractive technology for future wind turbines. However, the SCHB converter requires multiple isolated and balanced DC sources, which makes the application not straightforward. As an alternative approach to generate multiple isolated and balanced sources a prototype transformer with six secondary windings, 1.26 kVA and 10 kHz, is designed and developed for 1 kV five levels SCHB multilevel converters. The experimental results show that the proposed system may be attractive in grid based renewable energy systems. © 2012 IEEJ Industry Appl Soc.	en_US
dc.relation.ispartof	ICEMS 2012 - Proceedings: 15th International Conference on Electrical Machines and Systems	en_US
dc.title	A medium-frequency transformer with multiple secondary windings for grid connection through H-bridge voltage source converters	en_US
dc.type	Conference Proceeding
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
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
utslib.copyright.status	open_access
pubs.publication-status	Published	en_US

Abstract:

Although the power output of today's wind turbine has exceeded 7 MW, the voltage rating of the most common generator is below 700 V. A low-frequency transformer is commonly used to step-up the voltage to the grid voltage level, e.g. 11 kV or 33 kV. These heavy and bulky low-frequency transformers significantly increase the volume and weight of nacelle. To achieve a compact and light nacelle, a medium-voltage converter with series-connected H-bridge (SCHB) topology would be an attractive technology for future wind turbines. However, the SCHB converter requires multiple isolated and balanced DC sources, which makes the application not straightforward. As an alternative approach to generate multiple isolated and balanced sources a prototype transformer with six secondary windings, 1.26 kVA and 10 kHz, is designed and developed for 1 kV five levels SCHB multilevel converters. The experimental results show that the proposed system may be attractive in grid based renewable energy systems. © 2012 IEEJ Industry Appl Soc.

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http://hdl.handle.net/10453/32330