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Analysis and Torque Calculation of an Axial Flux Hysteresis Motor Based on Hyperbolic Model of Hysteresis Loop in Cartesian Coordinates

机译:基于笛卡尔坐标系中磁滞回线双曲线模型的轴向磁通滞后电动机的分析与转矩计算

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摘要

Like the other types, an axial flux hysteresis motor (AFHM) is a self-starting synchronous motor with outstanding characteristics, such as high constant starting torque and low starting current. In this paper, an AFHM is analyzed by linearly expanding the structure and solving Laplace’s equation in a 2-D Cartesian coordinates for the field in the air gap, and the stator and the rotor disc subject to appropriate boundary conditions. At the first step, with respect to the elliptical approximation and considering the complex permeability concept in the Cartesian coordinates, the hysteresis loop is modeled. Next, the field equation is modified by the hyperbolic approximation of the hysteresis loop to investigate the effects of the minor loops described by the harmonic components of the field, and then, the impact of the magnetomotive force harmonics on the machine performance is estimated by an iterative approach. Afterward, the closed-form expressions for the developed force and torque are obtained. Finally, the device is prototyped whose experimental results agree well with those extracted from the analytical model.
机译:与其他类型一样,轴向磁滞磁滞电机(AFHM)是具有出色特性(例如高恒定启动转矩和低启动电流)的自启动同步电动机。在本文中,通过线性扩展结构并在气隙中的磁场的二维笛卡尔坐标中求解拉普拉斯方程,从而对AFHM进行了分析,并且定子和转子盘受到适当的边界条件的影响。第一步,关于椭圆近似并考虑笛卡尔坐标中的复磁导率概念,对磁滞回线进行建模。接下来,通过磁滞回线的双曲线逼近来修改磁场方程,以研究由磁场的谐波分量描述的次要环路的影响,然后通过以下公式估算磁通势谐波对电机性能的影响:迭代方法。然后,获得展开力和转矩的闭合形式。最后,对该设备进行了原型设计,其实验结果与从分析模型中提取的结果非常吻合。

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