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Abstract <p>A mathematical thermal-process model for dc permanent-magnet micromotors with a hollow armature is proposed. The model allows selecting the maximum permissible current density in the hollow armature of the motor at the initial design stage, taking into account the effect of temperature on the magnet surface on the properties of the neodymium magnet, and obtaining higher performance indicators of the motor as a whole. When developing the model, the AnsysCFX program for solving computational fluid-dynamics problems based on the finite-volume method is used.</p>

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Thermal-Calculation Features of DC Commutator Permanent-Magnet Micromotors with a Hollow Armature

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • S. A. Vstovsky,
  • A. N. Pakhomov,
  • A. V. Soldatov,
  • S. N. Afanasyev

摘要

Abstract

A mathematical thermal-process model for dc permanent-magnet micromotors with a hollow armature is proposed. The model allows selecting the maximum permissible current density in the hollow armature of the motor at the initial design stage, taking into account the effect of temperature on the magnet surface on the properties of the neodymium magnet, and obtaining higher performance indicators of the motor as a whole. When developing the model, the AnsysCFX program for solving computational fluid-dynamics problems based on the finite-volume method is used.