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一种用于锥形永磁同步电动机分析的等效磁路建模方法。

An Equivalent Magnetic-Circuit-Modeling Approach for Analysis of Conical Permanent Magnet Synchronous Motor.

作者信息

Cui Fengrui, Chen Junquan, Hu Pengfei, Wu Xingyu, Sun Fangxu

机构信息

National Key Laboratory of Electromagnetic Energy, Naval University of Engineering, Wuhan 430033, China.

出版信息

Sensors (Basel). 2025 Mar 13;25(6):1788. doi: 10.3390/s25061788.

DOI:10.3390/s25061788
PMID:40292908
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11946766/
Abstract

Shaftless propulsion technology delivers high efficiency and low noise for subsea installations and marine vessels. To enhance thrust performance, the streamlined aft-body contour imposes stringent demands on geometric compatibility between the rim-driven thruster (RDT) motor and hull. This necessitates advanced electromagnetic characterization of conical motors. This paper proposes an equivalent magnetic circuit model (EMCM) that accounts for end effects and magnetic saturation in both the stator and rotor cores for the magnetic field analysis of conical permanent magnet synchronous motor (CPMSM). A 3D EMCM is developed by decomposing the air-gap flux into radial/axial/tangential components. End-field nonlinearities are addressed via lumped-parameter network modeling. Innovatively, a trapezoidal expanded magnet layout and magnet-pole-trimming technology are adopted to ensure sinusoidal flux distribution. Finally, a 10.5 kW prototype with a conical angle of 6.7 degrees is designed using the EMCM and verified through a finite-element analysis (FEA) and experiments. This research provides a theoretical framework for the rapid electromagnetic analysis of the CPMSM.

摘要

无轴推进技术为海底设施和船舶提供了高效率和低噪音。为了提高推力性能，流线型后体轮廓对轮缘驱动推进器（RDT）电机与船体之间的几何兼容性提出了严格要求。这就需要对锥形电机进行先进的电磁特性分析。本文提出了一种等效磁路模型（EMCM），该模型考虑了锥形永磁同步电机（CPMSM）定子和转子铁芯中的端部效应和磁饱和，用于磁场分析。通过将气隙磁通分解为径向/轴向/切向分量，开发了一种三维EMCM。通过集总参数网络建模解决端部场非线性问题。创新地采用梯形扩展磁体布局和磁极修整技术，以确保正弦磁通分布。最后，使用EMCM设计了一个锥角为6.7度的10.5千瓦原型，并通过有限元分析（FEA）和实验进行了验证。本研究为CPMSM的快速电磁分析提供了理论框架。

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Damper Winding for Noise and Vibration Reduction of a Permanent Magnet Synchronous Machine.用于降低永磁同步电机噪声和振动的阻尼绕组
Sensors (Basel). 2022 Apr 2;22(7):2738. doi: 10.3390/s22072738.