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Design of an axial-flux permanent magnet machine for an in-wheel direct drive application

机译：轮内直接驱动应用的轴向磁通永磁电机的设计

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This paper concerns the optimization and comparison of six different axial-flux permanent magnet (AFPM) machine topologies for an in-wheel direct drive application. The objective of the optimization is to reach maximum power density, which is of essence for an in-wheel motor. The machine topologies are optimized using the 3D analytical charge model in combination with a thermal equivalent circuit model for calculation of the temperature rise and thermal dependency of the main electromagnetic losses. All investigated AFPM machine topologies are variations of the internal stator twin external rotor AFPM machine. The resulting designs are compared based on their power density, weight, efficiency, and permanent magnet volume. The distributed winding topology with a quasi-Halbach magnet arrangement shows the best performance within the optimization problem.
机译：本文涉及轮毂直接驱动应用中六种不同的轴向磁通永磁体（AFPM）机器拓扑的优化和比较。优化的目的是达到最大功率密度，这对于轮毂电机至关重要。结合3D分析电荷模型和等效电路模型对机器拓扑进行了优化，以计算温度升高和主要电磁损耗的热依赖性。所有研究的AFPM机器拓扑都是内部定子双外转子AFPM机器的变体。根据功率密度，重量，效率和永磁体体积对所得设计进行比较。具有准哈尔巴赫磁体布置的分布式绕组拓扑在优化问题内显示出最佳性能。

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