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Balanced Flux Concentrators and Their Application for Reduction of Electromagnetic Forces in Magnetic Systems

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Abstract

Magnetic flux concentrators, viz., bodies with radial cuts introduced into the field of a magnet, substantially affect the magnitude and distribution of electromagnetic forces in magnetic systems. The fields of magnetic systems with flux concentrators are calculated in the perfect conduction approximation, which is valid in the case of a clearly pronounced skin effect. The possibility of complete or partial compensation of forces acting on the concentrator is demonstrated for some model problems. At the same time, it is shown that the placement of the concentrator near the winding of the magnet can reduce the forces acting on the winding. Therefore, the concentrator unloads the winding, remaining balanced completely or partly. As a result, the requirements of devices ensuring the durability of the magnetic system are substantially reduced.

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Funding

The work was supported by the Russian Science Foundation (project no. 18-19-00230).

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Authors and Affiliations

  1. Peter the Great St. Petersburg Polytechnic University, 195251, St. Petersburg, Russia

    G. A. Shneerson & D. A. Degtev

Authors
  1. G. A. Shneerson
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  2. D. A. Degtev
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Correspondence to G. A. Shneerson.

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Translated by N. Wadhwa

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Shneerson, G.A., Degtev, D.A. Balanced Flux Concentrators and Their Application for Reduction of Electromagnetic Forces in Magnetic Systems. Tech. Phys. 64, 757–766 (2019). https://doi.org/10.1134/S1063784219060203

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  • DOI: https://doi.org/10.1134/S1063784219060203

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