Calculation of eddy current loss in a tubular oscillatory lpmsm using computationally efficient FEA

Wu, T; Lu, K; Zhu, J; Lei, G; Guo, Y; Tang, S

Calculation of eddy current loss in a tubular oscillatory lpmsm using computationally efficient FEA

Wu, T Lu, K Zhu, J

Lei, G

Guo, Y

Tang, S

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Publication Type:: Journal Article
Citation:: IEEE Transactions on Industrial Electronics, 2019, 66 (8), pp. 6200 - 6209
Issue Date:: 2019-08-01

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Field	Value	Language
dc.contributor.author	Wu, T	en_US
dc.contributor.author	Lu, K	en_US
dc.contributor.author	Zhu, J https://orcid.org/0000-0002-9763-4047	en_US
dc.contributor.author	Lei, G https://orcid.org/0000-0002-8369-6802	en_US
dc.contributor.author	Guo, Y https://orcid.org/0000-0001-6182-0684	en_US
dc.contributor.author	Tang, S	en_US
dc.date.available	2021-08-12T19:00:40Z
dc.date.issued	2019-08-01	en_US
dc.identifier.citation	IEEE Transactions on Industrial Electronics, 2019, 66 (8), pp. 6200 - 6209	en_US
dc.identifier.issn	0278-0046	en_US
dc.identifier.uri	http://hdl.handle.net/10453/134948
dc.description.abstract	© 2018 IEEE. In some special oscillatory applications, especially those operated at high speeds, the eddy current loss of a linear permanent-magnet (PM) synchronous machine (LPMSM) should be fully considered because the loss might be large and concentrated in PMs during the oscillation period. This paper presents a loss analysis method based on computationally efficient finite-element analysis (CE-FEA) for a 20-Hz oscillatory tubular LPMSM. Since the mover speed varies with time, an equally divided model in 1/4 period is introduced to calculate the average PM eddy current loss. The flux density curves in PMs are calculated at 18 intervals by the CE-FEA, through which the change rate of the magnetic flux density is analyzed, considering both the entering and leaving effects and coil end effects. The calculation results show that the eddy current loss is obviously concentrated in PMs near the two ends of coils. The calculation results at a speed of 3.6 m/s obtained by the CE-FEA and two-dimensional and three-dimensional time-stepping FEAs are compared to validate the accuracy. Finally, the proposed method is validated by the experimental test results on a prototype LPMSM.	en_US
dc.relation.ispartof	IEEE Transactions on Industrial Electronics	en_US
dc.relation.isbasedon	10.1109/TIE.2018.2874586	en_US
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject.classification	Electrical & Electronic Engineering	en_US
dc.title	Calculation of eddy current loss in a tubular oscillatory lpmsm using computationally efficient FEA	en_US
dc.type	Journal Article
utslib.citation.volume	8	en_US
utslib.citation.volume	66	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
utslib.for	08 Information and Computing Sciences	en_US
utslib.for	09 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/Strength - CCET - Centre for Clean Energy Technology
utslib.copyright.status	open_access	*
pubs.issue	8	en_US
pubs.publication-status	Published	en_US
pubs.volume	66	en_US

Abstract:

© 2018 IEEE. In some special oscillatory applications, especially those operated at high speeds, the eddy current loss of a linear permanent-magnet (PM) synchronous machine (LPMSM) should be fully considered because the loss might be large and concentrated in PMs during the oscillation period. This paper presents a loss analysis method based on computationally efficient finite-element analysis (CE-FEA) for a 20-Hz oscillatory tubular LPMSM. Since the mover speed varies with time, an equally divided model in 1/4 period is introduced to calculate the average PM eddy current loss. The flux density curves in PMs are calculated at 18 intervals by the CE-FEA, through which the change rate of the magnetic flux density is analyzed, considering both the entering and leaving effects and coil end effects. The calculation results show that the eddy current loss is obviously concentrated in PMs near the two ends of coils. The calculation results at a speed of 3.6 m/s obtained by the CE-FEA and two-dimensional and three-dimensional time-stepping FEAs are compared to validate the accuracy. Finally, the proposed method is validated by the experimental test results on a prototype LPMSM.

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http://hdl.handle.net/10453/134948