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Determination of heat transfer coefficient of finned housing of a TEFC variable speed motor

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Abstract

This paper proposes the analytical calculation of the heat transfer coefficient from the housing of a totally enclosed fan cooled (TEFC) machine during the active cooling. A particular focus is on the calculation of the heat transfer coefficient from the machine’s housing for different fan rotational speeds. The paper describes the challenges and provides solutions to dominate them during the analytical calculation of the heat transfer coefficient a TEFC electrical machine. Finally, the proposed method is validated experimentally on a totally enclosed fan cooled synchronous reluctance motor, and good correspondence between the analytical and experimental results is obtained.

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Acknowledgements

This work has been supported by the European Regional Development Fund within the Activity 1.1.1.2 “Post-doctoral Research Aid” of the Specific Aid Objective 1.1.1 “To increase the research and innovative capacity of scientific institutions of Latvia and the ability to attract external financing, investing in human resources and infrastructure” of the Operational Programme “Growth and Employment” (No.1.1.1.2/VIAA/3/19/501).

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Authors and Affiliations

  1. Department of Electrical Machines and Devices, Riga Technical University, Kaļķu iela 1, Riga, Latvia

    Payam Shams Ghahfarokhi & Andrejs Podgornovs

  2. Department of Electrical Power Engineering and Mechatronics, Tallinn University of Technology, Ehitajate tee 5, Tallinn, Estonia

    Payam Shams Ghahfarokhi, Ants Kallaste, Anouar Belahcen, Toomas Vaimann & Bilal Asad

  3. Department of Electrical Engineering and Automation, Aalto University, Espoo, Finland

    Anouar Belahcen

Authors
  1. Payam Shams Ghahfarokhi
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  2. Ants Kallaste
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  3. Andrejs Podgornovs
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  4. Anouar Belahcen
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  5. Toomas Vaimann
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  6. Bilal Asad
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Correspondence to Payam Shams Ghahfarokhi.

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Shams Ghahfarokhi, P., Kallaste, A., Podgornovs, A. et al. Determination of heat transfer coefficient of finned housing of a TEFC variable speed motor. Electr Eng 103, 1009–1017 (2021). https://doi.org/10.1007/s00202-020-01132-1

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  • DOI: https://doi.org/10.1007/s00202-020-01132-1

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