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The Problem of Rotor Eddy-Current Losses in a Permanent Magnet Motor with High Power Density

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Proceedings of the Fifth International Scientific Conference “Intelligent Information Technologies for Industry” (IITI’21) (IITI 2021)

Part of the book series: Lecture Notes in Networks and Systems ((LNNS,volume 330))

Abstract

The article presents the problem of eddy-current losses in rotor elements of a permanent magnet motor with high power density. These losses can cause excessive heating of the rotor components and even demagnetization of the permanent magnets. The subject of the analysis is a motor weighing about 10 kg and a maximum power of 40 kW at 4800 rpm. It is a fractional slot, three phase, synchronous motor with the number of magnetic poles 2p = 20. In the paper, particular attention was paid to the correct selection of the number of stator slots to the number of magnetic poles, which affects both the value of the obtained electromagnetic torque and the value of eddy-current losses in the rotor elements. Several variants of the armature with a different number of slots in the stator were analyzed. The causes of rotor eddy-current losses and also suggestions for their minimization were discussed. The main goal of the works is the selection of the optimal solution of the motor’s electromagnetic circuit, taking into account the previously defined objective functions.

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Acknowledgment

This conference paper was supported by the Student Grant Agency VSB-TUO SGS 2101/SV4201121 financed by the Ministry of Education, Youth and Sports of the Czech Republic.

Author information

Authors and Affiliations

  1. Faculty of Electrical Engineering and Computer Science, Department of Electrical Engineering, VSB-Technical University of Ostrava, Ostrava, Czech Republic

    Tomasz Wolnik, Vítezslav Styskala & Roman Hrbac

  2. Łukasiewicz Research Network - Institute of Electrical Drives and Machines KOMEL, Katowice, Poland

    Tomasz Wolnik

  3. Rostov State Transport University, Rostov-on-Don, 344038, Russia

    Alexey M. Lyaschenko

Authors
  1. Tomasz Wolnik
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  2. Vítezslav Styskala
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  3. Roman Hrbac
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  4. Alexey M. Lyaschenko
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Editor information

Editors and Affiliations

  1. Rostovskogo Strelkovogo Polka Narodnogo, Rostov State Transport University, Rostov-on-Don, Russia

    Sergey Kovalev

  2. Bauman Moscow State Technical University, Moscow, Russia

    Valery Tarassov

  3. Department of Computer Science, VŠB-TUO, Ostrava-Poruba, Czech Republic

    Vaclav Snasel

  4. Apt. 8, Rostov State Transport University, Rostov-on-Don, Russia

    Andrey Sukhanov

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Wolnik, T., Styskala, V., Hrbac, R., Lyaschenko, A.M. (2022). The Problem of Rotor Eddy-Current Losses in a Permanent Magnet Motor with High Power Density. In: Kovalev, S., Tarassov, V., Snasel, V., Sukhanov, A. (eds) Proceedings of the Fifth International Scientific Conference “Intelligent Information Technologies for Industry” (IITI’21). IITI 2021. Lecture Notes in Networks and Systems, vol 330. Springer, Cham. https://doi.org/10.1007/978-3-030-87178-9_50

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