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A Numerical Study on the Energization of the Field Coils of a Full-Size Wind Turbine with Different Types of Flux Pumps

Author

Listed:
  • Giacomo Russo

    (Department of Electrical, Electronic and Information Engineering, University of Bologna, 40135 Bologna, Italy)

  • Antonio Morandi

    (Department of Electrical, Electronic and Information Engineering, University of Bologna, 40135 Bologna, Italy)

Abstract

High temperature superconductivity is emerging as a solution for lightweight, cost-effective and high-power wind generators. Current injection and maintainment/sustainment in the field winding are obtained by metal current leads which, due to persistent heat conduction and joule loss, are responsible for a large part of the total cryogenic heat load. Slip rings, which further reduce the overall performance and reliability of the system, are also required. In this paper we assess the viability of the HTS dynamo and the rectifier flux pumps for energizing the field coils of the EcoSwing 3.6 MW HTS wind generator. Both a “warm” solution, with the rectifier at room temperature, and a “cold” solution, in which the latter is integrated into the cryostat, are investigated with regard to the rectifier flux pump. A comparison with the actual, state-of-the-art, system of the EcoSwing machine is carried out in terms of the total required cooling power and the ability to charge the HTS field winding up to the rated current. It is found that the dynamo flux pump, beside avoiding the need of slip rings, allows the reduction in the required cooling by about 74% with respect to the conventional current-leads-based solution.

Suggested Citation

  • Giacomo Russo & Antonio Morandi, 2022. "A Numerical Study on the Energization of the Field Coils of a Full-Size Wind Turbine with Different Types of Flux Pumps," Energies, MDPI, vol. 15(15), pages 1-18, July.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:15:p:5392-:d:872008
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    Cited by:

    1. Wenich Vattanapuripakorn & Sathapon Sonsupap & Khomson Khannam & Natthakrit Bamrungwong & Prachakon Kaewkhiaw & Jiradanai Sarasamkan & Bopit Bubphachot, 2022. "Advanced Electric Battery Power Storage for Motors through the Use of Differential Gears and High Torque for Recirculating Power Generation," Clean Technol., MDPI, vol. 4(4), pages 1-14, October.

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