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首页> 外文期刊>Power Electronics, IET >Nested three-layer optimisation method for magnetic coils used in 3 kW vehicle-mounted wireless power transfer system
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Nested three-layer optimisation method for magnetic coils used in 3 kW vehicle-mounted wireless power transfer system

机译：3 kW车载无线电力传输系统中电磁线圈的嵌套三层优化方法

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摘要

Wireless power transfer is becoming more and more popular, especially for the charging design of electric vehicles. In this study, a novel nested three-layer optimisation method based on finite element model (FEM) is proposed to determine the structure of magnetic coils, which can increase the coupling coefficient, and hence, improve the transfer efficiency. The boundary conditions which consider practical situations for electric vehicles are first elaborated, then the optimisation flow is detailed and further analysed. Two magnetic coils are fabricated based on the optimised structure parameters, and their electric parameters, including self-inductances, mutual inductances as well as parasitic resistances, are measured and compared with those extracted from FEM, in addition, the magnetic flux densities around magnetic coils are also analysed. At last, a 3 kW prototype with 95% efficiency over a 20 cm transfer distance is achieved to validate this research results.
机译：无线功率传输变得越来越流行，尤其是在电动汽车的充电设计中。提出了一种基于有限元模型（FEM）的嵌套三层优化方法来确定电磁线圈的结构，可以提高耦合系数，从而提高传输效率。首先阐述了考虑电动汽车实际情况的边界条件，然后详细介绍了优化流程并进一步进行了分析。根据优化的结构参数制造两个电磁线圈，并测量其电参数，包括自感，互感以及寄生电阻，并将其与从FEM中提取的参数进行比较，此外，还确定了电磁线圈周围的磁通密度也进行了分析。最后，获得了一个3 kW的原型，在20厘米的传输距离上具有95％的效率，以验证该研究结果。

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