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Title
Methodology to Study Demagnetization Risk in Permanent Magnet Machines by Finite Element Method
Author
Gómez Serna, IratxoMondragon Unibertsitatea
Almandoz, Gaizka ccMondragon Unibertsitatea
Ugalde, GaizkaMondragon Unibertsitatea
Poza, JavierMondragon Unibertsitatea
Author (from another institution)
Escalada Aguado, Ana Julia
Research Group
Accionamientos aplicados a la tracción y a la generación de energía eléctrica
Published Date
2017
Publisher
IEEE
Keywords
demagnetization
Magnetic flux
Finite element analysis
Magnetic circuits ... [+]
demagnetization
Magnetic flux
Finite element analysis
Magnetic circuits
Temperature measurement
Robustness
Torque [-]
Abstract
Nowadays the majority of applications are demanding more and more compact, cost effective and robust solutions for their electric drives. In this context permanent magnet synchronous machines are cons ... [+]
Nowadays the majority of applications are demanding more and more compact, cost effective and robust solutions for their electric drives. In this context permanent magnet synchronous machines are considered as a good candidate due to their high torque density. This torque density is obtained thanks to high power rare earth magnets with both high remanence and high coercive force. However, the magnets cost has a relevant impact in the final cost of the electrical machine and the uncertainty shown by the rare earth market in the last years has originated high variations in the price of them. Due to that, it is essential to reduce this impact in order to accomplish cost effective drive solutions. Some key points to face this problem are the reduction of the magnets volume or the using of magnets with worse thermal properties (magnets with few dysprosium and with low coercive force). In both cases special attention must be paid on the demagnetization risk of the magnets. To carry out that analysis, in this article a finite element method simulation analysis process for demagnetization of permanent magnets is presented. The developed method has been validated experimentally in a test bench. Good agreement is shown between simulations and experimental results. [-]
URI
https://hdl.handle.net/20.500.11984/5796
Publisher’s version
https://doi.org/10.1109/WEMDCD.2017.7947757
ISBN
978-1-5090-5853-2
Published at
IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD)  Nottingham. 20-21 April. Pp. 262 - 267. IEEE, 2017
Document type
Conference paper
Version
Postprint – Accepted Manuscript
Rights
© 2017 IEEE
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Open Access
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  • Conferences - Engineering [242]

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