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Electrical Generators for Large Wind Turbine: Trends and Challenges

Author

Listed:
  • Amina Bensalah

    (GREAH, Le Havre Normandie University, 76600 Le Havre, France)

  • Georges Barakat

    (GREAH, Le Havre Normandie University, 76600 Le Havre, France)

  • Yacine Amara

    (GREAH, Le Havre Normandie University, 76600 Le Havre, France)

Abstract

This paper presents an overview of the emerging trends in the development of electrical generators for large wind turbines. To describe the developments in the design of electrical generators, it is necessary to look at the conversion system as a whole, and then, the structural and mechanical performances of the drive train need to be considered. Many drive train configurations have been proposed for large wind turbines; they should ensure high reliability, long availability and reduced maintainability. Although most installed wind turbines are geared, directly driven wind turbines with permanent magnet generators have attracted growing interest in the last few years, which has been in parallel to the continuous increase of the per unit turbine power. The aim of this work is to present the recent commercial designs of electrical generators in large wind turbines. Both the strengths and weaknesses of the existing systems are discussed. The most emerging technologies in high-power, low-speed electrical generators are investigated. Furthermore, a comparative analysis of different electrical generator concepts is performed, and the generators are assessed upon a list of criteria such as the mass, cost, and mass-to-torque ratio. Within the framework of these criteria, it may help to determine whether the electrical generator is technically feasible and economically viable for high-power wind turbines. Finally, this review could help to determine suitable generators for use in large and ultra-large wind energy systems.

Suggested Citation

  • Amina Bensalah & Georges Barakat & Yacine Amara, 2022. "Electrical Generators for Large Wind Turbine: Trends and Challenges," Energies, MDPI, vol. 15(18), pages 1-36, September.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:18:p:6700-:d:913829
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    References listed on IDEAS

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    Cited by:

    1. Víctor Ballestín-Bernad & Jesús Sergio Artal-Sevil & José Antonio Domínguez-Navarro, 2023. "Prototype of a Two-Phase Axial-Gap Transverse Flux Generator Based on Reused Components and 3D Printing," Energies, MDPI, vol. 16(4), pages 1-20, February.
    2. Joon-Ha Hwang & Deok-je Bang & Gang-Won Jang, 2023. "Structural Analysis and Lightweight Optimization of a Buoyant Rotor-Type Permanent Magnet Generator for a Direct-Drive Wind Turbine," Energies, MDPI, vol. 16(15), pages 1-16, July.
    3. Sikandar Khan, 2023. "A Modeling Study Focused on Improving the Aerodynamic Performance of a Small Horizontal Axis Wind Turbine," Sustainability, MDPI, vol. 15(6), pages 1-15, March.

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