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A Novel Analytic Method to Calculate the Equivalent Stray Capacitance of the Low-Speed Maglev Train’s Suspension Electromagnet

机译:一种新的分析方法来计算低速磁悬浮火车悬架电磁铁的等效杂散电容

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摘要

The suspension electromagnet (SEM) is one of the most critical components of the low-speed maglev train to achieve the stable suspension and non-contact operation with the track. Therefore, it is valuable for optimizing the maglev system to study the characteristics of the SEM. This paper proposes a novel analytic method to calculate the equivalent stray capacitance of the SEM efficiently. It considers the capacitances inside the winding (turn to turn and layer to layer) and between the winding and core. Firstly, utilizing the compensation analytic method (CAM) calculates the static capacitances to reduce the calculation error, and the results of the CAM have significant improvement comparing with that of the traditional analytic method (TAM). Secondly, the analytical formula of the core floating potential is derived based on the partial capacitance theory, which has a 2.1% relative error to the finite element method (FEM). Finally, the experiment results of the SEM of a test rig prove the accuracy and efficiency of the proposed method.
机译:悬架电磁铁(SEM)是低速Maglev火车最关键的部件之一,以实现与轨道的稳定悬架和非接触操作。因此,优化Maglev系统以研究SEM的特性是有价值的。本文提出了一种新的分析方法,以有效地计算SEM的等效杂散电容。它考虑绕组内部的电容(转向转向和层到层)以及绕组和芯之间。首先,利用补偿分析方法(CAM)来计算静态电容以减少计算误差,并且凸轮的结果与传统分析方法(TAM)相比具有显着的改善。其次,基于部分电容理论导出核心浮动电位的分析公式,其对有限元方法(FEM)具有2.1%的相对误差。最后,试验台SEM的实验结果证明了该方法的准确性和效率。

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