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<p>The excitation requirement for an electrically excited, geared medium-speed generator with high-temperature superconducting field winding for offshore wind power is investigated. Two methods are applied: (i) <i>Potier</i>’s method based on the simulated generator no-load and short-circuit characteristics is compared to (ii) an iterative finite element based calculation scheme. An emphasis of the paper is on the determination of the stator stray reactance and <i>Potier</i>’s reactance in presence of heavy rotor and stator iron saturation. An acceptable deviation of 12% between the finite element calculations and <i>Potier</i>’s method is found for nominal operation. A&#xa0;modified construction method is proposed, reducing the deviation in required excitation below 7% also for different operating points.</p>

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Exciter Ampere turns via Potier’s method for a HTSC wind generator

  • 期刊论文

  • 发表日期：

    2025年3月18日

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  • Robin Köster,
  • Andreas Binder

摘要

The excitation requirement for an electrically excited, geared medium-speed generator with high-temperature superconducting field winding for offshore wind power is investigated. Two methods are applied: (i) Potier’s method based on the simulated generator no-load and short-circuit characteristics is compared to (ii) an iterative finite element based calculation scheme. An emphasis of the paper is on the determination of the stator stray reactance and Potier’s reactance in presence of heavy rotor and stator iron saturation. An acceptable deviation of 12% between the finite element calculations and Potier’s method is found for nominal operation. A modified construction method is proposed, reducing the deviation in required excitation below 7% also for different operating points.