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首页> 外文期刊>Magnetics, IEEE Transactions on >3-D Analytical Model for Axial-Flux Eddy-Current Couplings and Brakes Under Steady-State Conditions
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3-D Analytical Model for Axial-Flux Eddy-Current Couplings and Brakes Under Steady-State Conditions

机译：稳态条件下轴向磁通涡流耦合器和制动器的3-D分析模型

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摘要

This paper presents a 3-D analytical model for axial-flux eddy-current couplings and brakes, leading to closed-form expressions for the torque and the axial force. The proposed model is valid under a steady-state condition (constant speed operation). It takes into account the reaction field due to induced currents in the moving conducting part. In order to simplify the analysis, we adopt the assumption of linearization at the mean radius, and the problem is then solved in 3-D Cartesian coordinates (curvature effects are neglected). The solution is obtained by solving the Maxwell equations with a magnetic scalar potential formulation in the nonconductive regions (magnets and air gap) and a magnetic field strength formulation in the conductive region (copper). Magnetic field distribution, axial force, and torque computed with the 3-D analytical model are compared with those obtained from the 3-D finite-element simulations and experimental results.
机译：本文提出了一种用于轴向磁通涡流耦合器和制动器的3-D分析模型，从而得出了转矩和轴向力的闭合形式。所提出的模型在稳态条件下（恒速运行）有效。它考虑了由于运动的导电部件中的感应电流引起的反应场。为了简化分析，我们采用在平均半径处线性化的假设，然后在3-D笛卡尔坐标中解决该问题（忽略曲率影响）。通过在非导电区域（磁体和气隙）中使用磁标量势公式并在导电区域（铜）中使用磁场强度公式来求解麦克斯韦方程组，从而获得该解。将通过3-D解析模型计算出的磁场分布，轴向力和扭矩与从3-D有限元模拟和实验结果获得的磁场分布，轴向力和扭矩进行了比较。

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