Issues with the design of brushless doubly-fed reluctance machines: Unbalanced magnetic pull, skew and iron losses

Dorrell, DG; Knight, AM; Betz, RE

Issues with the design of brushless doubly-fed reluctance machines: Unbalanced magnetic pull, skew and iron losses

Dorrell, DG

Knight, AM Betz, RE

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Publication Type:: Conference Proceeding
Citation:: 2011 IEEE International Electric Machines and Drives Conference, IEMDC 2011, 2011, pp. 663 - 668
Issue Date:: 2011-09-14

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Field	Value	Language
dc.contributor.author	Dorrell, DG https://orcid.org/0000-0001-8060-3386	en_US
dc.contributor.author	Knight, AM	en_US
dc.contributor.author	Betz, RE	en_US
dc.date.issued	2011-09-14	en_US
dc.identifier.citation	2011 IEEE International Electric Machines and Drives Conference, IEMDC 2011, 2011, pp. 663 - 668	en_US
dc.identifier.isbn	9781457700613	en_US
dc.identifier.uri	http://hdl.handle.net/10453/31082
dc.description.abstract	In this paper some fundamental design issues concerning the brushless doubly-fed reluctance machine are addressed. The literature has several examples of electrical machines with different pole number. It has become apparent that a radially-laminated ducted rotor is a better option. In this paper it is illustrated that the pole number combination should not have pole pair number varying by one, otherwise unbalanced magnetic pull occurs. In addition, it is shown that to reduce voltage ripple due to the interaction of the slotting between the stator slots and rotor ducts, two axial rotor sections can be used with a small degree of skew between them. The example machine design is a 2 MW design as used previously, this has 48 stator slots. The machine results are couched in terms of a 4/8 pole and a 4/6 pole combination (for UMP calculation). Finite element analysis and analytical algorithms are used in the paper. © 2011 IEEE.	en_US
dc.relation.ispartof	2011 IEEE International Electric Machines and Drives Conference, IEMDC 2011	en_US
dc.relation.isbasedon	10.1109/IEMDC.2011.5994890	en_US
dc.title	Issues with the design of brushless doubly-fed reluctance machines: Unbalanced magnetic pull, skew and iron losses	en_US
dc.type	Conference Proceeding
utslib.for	0906 Electrical and Electronic Engineering	en_US
dc.location.activity	Niagra Falls
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

Abstract:

In this paper some fundamental design issues concerning the brushless doubly-fed reluctance machine are addressed. The literature has several examples of electrical machines with different pole number. It has become apparent that a radially-laminated ducted rotor is a better option. In this paper it is illustrated that the pole number combination should not have pole pair number varying by one, otherwise unbalanced magnetic pull occurs. In addition, it is shown that to reduce voltage ripple due to the interaction of the slotting between the stator slots and rotor ducts, two axial rotor sections can be used with a small degree of skew between them. The example machine design is a 2 MW design as used previously, this has 48 stator slots. The machine results are couched in terms of a 4/8 pole and a 4/6 pole combination (for UMP calculation). Finite element analysis and analytical algorithms are used in the paper. © 2011 IEEE.

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