Direct Radial and Circumferential Analytical Air-Gap Field Calculation for Electrical Machines

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Authors

  • Jan Andresen
  • Bernd Ponick
  • Axel Mertens
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Details

Original languageEnglish
Title of host publication2019 International Aegean Conference on Electrical Machines and Power Electronics, ACEMP 2019 and 2019 International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2019
Subtitle of host publicationProceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages191-198
Number of pages8
ISBN (electronic)978-1-5386-7687-5
ISBN (print)978-1-5386-7688-2
Publication statusPublished - Aug 2019
Event2019 International Aegean Conference on Electrical Machines and Power Electronics, ACEMP 2019 and 2019 International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2019 - Istanbul, Turkey
Duration: 27 Aug 201929 Aug 2019

Publication series

NameProceedings of the International Conference on Optimisation of Electrical and Electronic Equipment
ISSN (Print)1842-0133

Abstract

This paper introduces a new approach for directly calculating the radial flux density in a slotted electrical machine. Through being based on the subdomain approach, it is capable of calculating the air-gap field more accurately than traditional one-dimensional approaches. Contrary to existing subdomain models and finite element analysis, the new approach has the advantage that the cause of certain spatial harmonics of the radial flux density is directly visible. The approach is based on the separation of variables of the vector potential inside the air gap. The radial flux density is calculated at both, the inner and the outer side of the air gap. Using the radial flux density, the circumferential flux density can be calculated. This enables the calculation of the electromagnetic forces including the torque. The approach also encompasses effects due to rotation by assigning each spatial harmonic to a rotational order. This eliminates the need to calculate multiple time steps. Furthermore, the approach provides an extensibility similar to traditional one-dimensional air-gap conductivity based methods.

Keywords

    magnetic fields, magnetic flux density, magnetic forces, torque

ASJC Scopus subject areas

Cite this

Direct Radial and Circumferential Analytical Air-Gap Field Calculation for Electrical Machines. / Andresen, Jan; Ponick, Bernd; Mertens, Axel.
2019 International Aegean Conference on Electrical Machines and Power Electronics, ACEMP 2019 and 2019 International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2019: Proceedings. Institute of Electrical and Electronics Engineers Inc., 2019. p. 191-198 9007213 (Proceedings of the International Conference on Optimisation of Electrical and Electronic Equipment).

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Andresen, J, Ponick, B & Mertens, A 2019, Direct Radial and Circumferential Analytical Air-Gap Field Calculation for Electrical Machines. in 2019 International Aegean Conference on Electrical Machines and Power Electronics, ACEMP 2019 and 2019 International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2019: Proceedings., 9007213, Proceedings of the International Conference on Optimisation of Electrical and Electronic Equipment, Institute of Electrical and Electronics Engineers Inc., pp. 191-198, 2019 International Aegean Conference on Electrical Machines and Power Electronics, ACEMP 2019 and 2019 International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2019, Istanbul, Turkey, 27 Aug 2019. https://doi.org/10.1109/acemp-optim44294.2019.9007213
Andresen, J., Ponick, B., & Mertens, A. (2019). Direct Radial and Circumferential Analytical Air-Gap Field Calculation for Electrical Machines. In 2019 International Aegean Conference on Electrical Machines and Power Electronics, ACEMP 2019 and 2019 International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2019: Proceedings (pp. 191-198). Article 9007213 (Proceedings of the International Conference on Optimisation of Electrical and Electronic Equipment). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/acemp-optim44294.2019.9007213
Andresen J, Ponick B, Mertens A. Direct Radial and Circumferential Analytical Air-Gap Field Calculation for Electrical Machines. In 2019 International Aegean Conference on Electrical Machines and Power Electronics, ACEMP 2019 and 2019 International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2019: Proceedings. Institute of Electrical and Electronics Engineers Inc. 2019. p. 191-198. 9007213. (Proceedings of the International Conference on Optimisation of Electrical and Electronic Equipment). doi: 10.1109/acemp-optim44294.2019.9007213
Andresen, Jan ; Ponick, Bernd ; Mertens, Axel. / Direct Radial and Circumferential Analytical Air-Gap Field Calculation for Electrical Machines. 2019 International Aegean Conference on Electrical Machines and Power Electronics, ACEMP 2019 and 2019 International Conference on Optimization of Electrical and Electronic Equipment, OPTIM 2019: Proceedings. Institute of Electrical and Electronics Engineers Inc., 2019. pp. 191-198 (Proceedings of the International Conference on Optimisation of Electrical and Electronic Equipment).
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abstract = "This paper introduces a new approach for directly calculating the radial flux density in a slotted electrical machine. Through being based on the subdomain approach, it is capable of calculating the air-gap field more accurately than traditional one-dimensional approaches. Contrary to existing subdomain models and finite element analysis, the new approach has the advantage that the cause of certain spatial harmonics of the radial flux density is directly visible. The approach is based on the separation of variables of the vector potential inside the air gap. The radial flux density is calculated at both, the inner and the outer side of the air gap. Using the radial flux density, the circumferential flux density can be calculated. This enables the calculation of the electromagnetic forces including the torque. The approach also encompasses effects due to rotation by assigning each spatial harmonic to a rotational order. This eliminates the need to calculate multiple time steps. Furthermore, the approach provides an extensibility similar to traditional one-dimensional air-gap conductivity based methods.",
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Download

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