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Beaming of Inductive Field with an Asymmetric Four-Coil Resonator for Wireless Power Transfer

机译:用非对称四线圈谐振器对感应场进行波束传输,以进行无线功率传输

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This paper suggests a high efficiency inductive wireless power transfer system can be achieved by improving beaming field. Theoretical analysis, simulation results and experimental results are presented in this report. The coupling coefficient is enhanced through the use of multi-coils on the primary, ensuring a long distance transfer over a wide operating frequency range. It is a significant technique to overcome the shortcomings of wired charging. A prototype is constructed and the optimum air gap between the primary side and the secondary side for the power transmission is 15mm with 60 kHz of switching frequency. The results obtained reveals that asymmetric 4-coil resonator has greater power transfer efficiency for a similar gap compared to symmetric 4-coil resonator as the source coil effective inductance is boosted two times by intermediate coils at the primary side.
机译:本文提出可以通过改善射束场来实现高效的感应式无线电力传输系统。本报告介绍了理论分析,仿真结果和实验结果。通过在初级线圈上使用多线圈来增强耦合系数,从而确保在较宽的工作频率范围内进行长距离传输。克服有线充电的缺点是一项重要的技术。构建了一个原型,用于功率传输的一次侧和二次侧之间的最佳气隙为15mm,开关频率为60 kHz。所获得的结果表明,与对称4线圈谐振器相比,非对称4线圈谐振器在相似的间隙中具有更高的功率传输效率,因为源线圈的有效电感被初级侧的中间线圈提升了两倍。

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