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Cooling Techniques in Direct-Drive Generators for Wind Power Application

Author

Listed:
  • Petrica Taras

    (Department of Electronic and Electrical Engineering, The University of Sheffield, Sheffield S1 3JD, UK)

  • Reza Nilifard

    (Siemens Gamesa Renewable Energy A/S, P.O. Box 7330 Brande, Denmark)

  • Zi-Qiang Zhu

    (Department of Electronic and Electrical Engineering, The University of Sheffield, Sheffield S1 3JD, UK
    Sheffield Siemens Gamesa Renewable Energy Research Centre, Sheffield S3 7HQ, UK)

  • Ziad Azar

    (Sheffield Siemens Gamesa Renewable Energy Research Centre, Sheffield S3 7HQ, UK)

Abstract

Direct-drive generators are an attractive candidate for wind power application since they do not need a gearbox, thus increasing operational reliability and reducing power losses. However, this is achieved at the cost of an increased generator size, larger inverter and decreased thermal performance. The associated cooling system is therefore crucial to keep the generator and inverter sizes down and to operate within the safe thermal limits. Various cooling techniques suitable for generators are therefore reviewed and analyzed in this paper. The performance and maintenance requirements are unavoidable compromises that need to be investigated together, especially for large generators. The location of the wind turbine is also important and dictates critical issues such as accessibility and maximum size. The key novelty in this paper is the assessment of the cooling methods based on generator size, reliability and maintenance requirements.

Suggested Citation

  • Petrica Taras & Reza Nilifard & Zi-Qiang Zhu & Ziad Azar, 2022. "Cooling Techniques in Direct-Drive Generators for Wind Power Application," Energies, MDPI, vol. 15(16), pages 1-29, August.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:16:p:5986-:d:891673
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    References listed on IDEAS

    as
    1. Nerg, Janne & Ruuskanen, Vesa, 2013. "Lumped-parameter-based thermal analysis of a doubly radial forced-air-cooled direct-driven permanent magnet wind generator," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 90(C), pages 218-229.
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    Cited by:

    1. Zi-Qiang Zhu & Dawei Liang, 2022. "Perspective of Thermal Analysis and Management for Permanent Magnet Machines, with Particular Reference to Hotspot Temperatures," Energies, MDPI, vol. 15(21), pages 1-51, November.
    2. Farid Khazaeli Moghadam & Nils Desch, 2023. "Life Cycle Assessment of Various PMSG-Based Drivetrain Concepts for 15 MW Offshore Wind Turbines Applications," Energies, MDPI, vol. 16(3), pages 1-26, February.
    3. Dongmyoung Kim & Taesu Jeon & Insu Paek & Wirachai Roynarin & Boonyang Plangklang & Bayasgalan Dugarjav, 2023. "A Study on the Improved Power Control Algorithm for a 100 kW Wind Turbine," Energies, MDPI, vol. 16(2), pages 1-15, January.
    4. Małgorzata Jastrzębska, 2022. "Installation’s Conception in the Field of Renewable Energy Sources for the Needs of the Silesian Botanical Garden," Energies, MDPI, vol. 15(18), pages 1-28, September.

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