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<p>In this paper, superposition magnetic equivalent circuit (SMEC) is proposed to reduce the analysis time of the three-dimensional (3D) finite element analysis (FEA) for the yokeless and segmented armature (YASA) axial flux permanent magnet motor (AFPMM) with trapezoidal magnet. To simplify the complex flux path of the YASA AFPMM, the SMEC method constructs the magnetic equivalent circuit (MEC) model of the quasi-3D model, and divides the MEC model into three types considering the electromagnetic source. The permanent magnet model is divided into four cases considering the relationship between the slot opening and magnet pole arc to pole pitch ratio. The current model is divided into two cases with d-axis model and q-axis model, and various current phase angles can be simply considered. Saturation of the core is considered at each model, and postprocessing process is applied to consider triple sources simultaneously. The performance of the proposed SMEC is validated by comparing the calculation time and analysis result of the YASA AFPMM with 3D FEA.</p>

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Novel Analysis Strategy for the YASA Axial Flux Permanent Magnet Motor with Trapezoidal Magnet Using Superposition Magnetic Equivalent Circuit

  • 期刊论文

  • 发表日期：

    2026年2月13日

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  • Ji-Chang Son,
  • Dong-Kuk Lim,
  • Dong-Hee Lee,
  • Peel-Joong Kim,
  • Han-Kyeol Yeo

摘要

In this paper, superposition magnetic equivalent circuit (SMEC) is proposed to reduce the analysis time of the three-dimensional (3D) finite element analysis (FEA) for the yokeless and segmented armature (YASA) axial flux permanent magnet motor (AFPMM) with trapezoidal magnet. To simplify the complex flux path of the YASA AFPMM, the SMEC method constructs the magnetic equivalent circuit (MEC) model of the quasi-3D model, and divides the MEC model into three types considering the electromagnetic source. The permanent magnet model is divided into four cases considering the relationship between the slot opening and magnet pole arc to pole pitch ratio. The current model is divided into two cases with d-axis model and q-axis model, and various current phase angles can be simply considered. Saturation of the core is considered at each model, and postprocessing process is applied to consider triple sources simultaneously. The performance of the proposed SMEC is validated by comparing the calculation time and analysis result of the YASA AFPMM with 3D FEA.