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<p>The operation of an induction machine (IM) without a&#xa0;mechanical position sensor saves cost and reduces its volume. At zero and low speeds, anisotropy-based self-sensing control (SSC) methods can be used, but IMs do not inherently exhibit the necessary rotor-fixed anisotropy for these methods. By means of modified rotor designs with an additional asymmetrical winding or modulated slot openings, a&#xa0;rotor-fixed anisotropy can be introduced. Nevertheless, an operation with SSC at low speed has still only been demonstrated with reduced flux or torque. Now, with a&#xa0;modified rotor and a&#xa0;novel compensation for the saturation-dependent anisotropy, a&#xa0;successful operation with SSC at rated torque and zero to low speed is presented.</p>

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Anisotropy-based self-sensing design and control of induction machines

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年3月28日

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  • Constantin Schepe,
  • Niklas Himker,
  • Axel Mertens,
  • Bernd Ponick

摘要

The operation of an induction machine (IM) without a mechanical position sensor saves cost and reduces its volume. At zero and low speeds, anisotropy-based self-sensing control (SSC) methods can be used, but IMs do not inherently exhibit the necessary rotor-fixed anisotropy for these methods. By means of modified rotor designs with an additional asymmetrical winding or modulated slot openings, a rotor-fixed anisotropy can be introduced. Nevertheless, an operation with SSC at low speed has still only been demonstrated with reduced flux or torque. Now, with a modified rotor and a novel compensation for the saturation-dependent anisotropy, a successful operation with SSC at rated torque and zero to low speed is presented.