The Efficiency Evaluation on Different-shape Coils for Loosely Coupled Transformer of Wireless Power Transmission System

2022 18th IEEE/ASME International Conference on Mechatronic and Embedded Systems and Applications (MESA) Pub Date : 2022-11-28 DOI:10.1109/MESA55290.2022.10004472

Yujie Lian, Tsung-Lin Lu, Yuang-Tung Cheng, Chih-Chi Lin, Jia-Wei Xu, J. Ho, Ming-Liang Lai

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Abstract

In this research, we uses low-frequency electromagnetic field software (Ansys Maxwell 16) to simulate two coil models with different shapes - rectangular and circular in wireless power transmission (WPT). Next, the equivalent model of the series-series (S-S) compensation circuit implemented for leakage inductance, simulated by software (Powersim, PSIM) to analyze the overall efficiency (η). In an inductive and loosely coupled transformer, the influences of coupling coefficient (K) and mutual inductance (M) characteristics, which caused by different coaxial heights (h) and misalignment distances (d) of the coils are discussed. As results for circular shape at coaxial height (h=10 mm), the K=0.800 and η= 98.91%, which are optimal values for all shapes. These excellent simulation performances indicate proposed transformer is a candidate for a low-cost chip for vehicle WPT applications.

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无线电力传输系统中松耦合变压器不同形状线圈的效率评价

在本研究中，我们使用低频电磁场软件Ansys Maxwell 16对无线电力传输(WPT)中矩形和圆形两种不同形状的线圈模型进行仿真。其次，利用Powersim、PSIM等软件对实现漏感的串联-串联(S-S)补偿电路的等效模型进行仿真，分析总效率(η)。在电感松散耦合变压器中，讨论了不同线圈同轴高度(h)和不对中距离(d)对耦合系数(K)和互感特性(M)的影响。结果表明，同轴高度(h=10 mm)为圆形时，K=0.800， η= 98.91%，为所有形状的最优值。这些优异的仿真性能表明，该变压器是低成本汽车WPT应用芯片的候选产品。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2022 18th IEEE/ASME International Conference on Mechatronic and Embedded Systems and Applications (MESA)

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