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Open AccessFeature PaperArticle

Magnetic Loss Analysis in Coaxial Magnetic Gears

1
Polytechnic Department of Engineering and Architecture, Via delle Scienze 206, 33100 Udine, Italy
2
Department of Industrial Engineering, University of Padova, 35131 Padova, Italy
3
Department of Energy “Galileo Ferraris”, Politecnico di Torino, 10129 Torino, Italy
4
Department of Mechanical and Aerospace Engineering, Politecnico di Torino, 10129 Torino, Italy
*
Authors to whom correspondence should be addressed.
Electronics 2019, 8(11), 1320; https://doi.org/10.3390/electronics8111320
Received: 24 September 2019 / Revised: 24 October 2019 / Accepted: 6 November 2019 / Published: 9 November 2019
(This article belongs to the Special Issue Computational Electromagnetics and Its Applications)
This paper proposes a procedure for computing magnetic losses in coaxial magnetic gears. These magnetic structures are made of permanent magnets and ferromagnetic poles in relative motion transferring torque between two shafts in a contactless way. The loss computation in magnetic materials is crucial to define the system performance. The flux distribution inside the iron parts is computed by means of the finite element method and a model of iron losses taking into account the rotational nature of the flux loci is applied. The procedure highlights where the major loss sources are present and gives the opportunity to evaluate some corrective measures to reduce their effects. Particular attention is devoted to the 2D modeling in presence of permanent magnets segmentation.
Keywords: contactless gears; electromechanics; magnetic gears; magnetic loss; rotational flux contactless gears; electromechanics; magnetic gears; magnetic loss; rotational flux
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MDPI and ACS Style

Filippini, M.; Alotto, P.; Cirimele, V.; Repetto, M.; Ragusa, C.; Dimauro, L.; Bonisoli, E. Magnetic Loss Analysis in Coaxial Magnetic Gears. Electronics 2019, 8, 1320.

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