Contactless sliprings (CS) based on inductive power transfer (IPT) offer a safe and reliable power transfer solution for rotary applications. An accurate reluctance model for CS is presented in this paper along with the associated parameters identification, considering the partially linking effect of the magnetic flux. Aiming to obtain higher coupling coefficient and lighter weight, a design optimization for CS is also proposed by defining a new design parameter “ζ.” Both simulations and experimental measurements are presented to verify the effectiveness of the proposed modeling method. The maximum errors (between the identified results and the measured results) of the mutual inductance, the leakage inductance, and the coupling coefficient are 8.72%, 7.12%, and 5.98%, respectively, when the gap is less than the core window width. Comparative studies among different modeling methods are carried out, which testify that the proposed method has the highest accuracy. Finally, a 1.5 kW IPT system employing the designed CS is fabricated for verification.

中文翻译：

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旋转应用非接触式滑环的建模和设计


基于感应电力传输 (IPT) 的非接触式滑环 (CS) 为旋转应用提供安全可靠的电力传输解决方案。本文提出了一种精确的 CS 磁阻模型以及相关参数识别，考虑了磁通量的部分链接效应。为了获得更高的耦合系数和更轻的重量，还通过定义新的设计参数“ζ”提出了CS的设计优化。仿真和实验测量都验证了所提出的建模方法的有效性。当间隙小于磁芯窗口宽度时，互感、漏感和耦合系数的最大误差（识别结果与测量结果之间）分别为8.72%、7.12%和5.98%。对不同建模方法进行了比较研究，证明所提出的方法具有最高的精度。最后，采用所设计的 CS 制作了一个 1.5 kW IPT 系统进行验证。