In this article, we investigate rotor design of claw-pole alternators for automobile applications to increase output and decrease core loss. First, the electromagnetic field distribution is calculated by the three-dimensional (3-D) nonlinear time-stepping finite-element method, which considers eddy currents generated at a solid rotor core and a laminated stator core. From the results, a novel rotor design is proposed. Experimental verification is carried out to confirm the advantage of the proposed design. The mechanism of output increase and loss reduction by the proposed alternator is revealed by analyzing detailed 3-D flux paths in the rotors.

中文翻译：

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通过分析转子中的 3D 磁通路径改进汽车应用爪极交流发电机的特性

在本文中，我们研究了用于汽车应用的爪极交流发电机的转子设计，以增加输出并降低铁损。首先，通过三维 (3-D) 非线性时间步进有限元方法计算电磁场分布，该方法考虑了在实心转子铁芯和叠片定子铁芯处产生的涡流。根据结果​​，提出了一种新颖的转子设计。进行实验验证以确认所提出设计的优点。通过分析转子中详细的 3-D 磁通​​路径，揭示了所提出的交流发电机增加输出和减少损耗的机制。