一种抗宽范围耦合系数波动的三元件补偿型感应式能量传输系统

doi:10.19595/j.cnki.1000-6753.tces.161581

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摘要常规LCL型感应式能量传输系统具有电压增益独立于负载的特性,在耦合系数波动小而负载范围较宽的无线能量传输场合应用较广。然而其输出特性受耦合系数影响很大,不适用于动态能量传输场合。在LCL型补偿拓扑的基础上,通过改造其输出特性,提出一种适用于动态感应式能量传输场合的改进型拓扑,以适应大范围耦合系数的变化。从平滑输出电压增益的角度出发,定量分析电压增益和输出阻抗角与耦合系数和无源元件参数的关系。通过对LCL型谐振腔增加一阶自由度,构造了三元件补偿的LCC型拓扑,实现了耦合系数大范围波动情况下输出功率近似恒定。与常规拓扑相比,该补偿拓扑对耦合系数的敏感性大大降低。最后,设计一台原理样机,传输功率在耦合系数大范围波动下保持平稳,相比常规拓扑,使得输出特性关于耦合系数的敏感性大大降低。验证了设计方法的有效性。

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关键词 ：感应式能量传输, LCC型谐振腔, 抗偏移拓扑

Abstract：Conventional LCL based inductive power transfer systems realizes output voltage gain independent of load condition, while its power transfer characteristic is easily influenced by coupling factor and thus unsuitable for dynamic charging application. In this paper, an LCL based compensation topology with high tolerance to misalignment is proposed. From the perspective of smoothing voltage gain, the rated voltage gain and output impedance are quantified as function of coupling factor and passive elements parameters. The three-element compensation network is fabricated by adding one degree of design freedom. The voltage gain characteristic indicates that the proposed topology can keep relatively constant output under wide fluctuation of coupling condition. Finally, a prototype is built. Experiment results show good agreement with theoretical analysis.

Key words： Inductive power transfer LCC type resonant tank misalignment tolerant topology

收稿日期: 2016-09-28 出版日期: 2017-11-14

PACS:

TM724

基金资助:国家自然科学基金国际（地区）合作与交流项目（51361130150）和光宝科技电力电子产学科研合作项目（PRC20161047）资助

通讯作者: 蔡涛男,1974年生,博士,副教授,主要从事并网光伏发电系统及电化学储能系统的监控及能量管理技术以及电力电子装置的故障检测与诊断技术研究。E-mail: caitao@hust.edu.cn。

作者简介: 丰昊男,1991年生,博士研究生,研究方向为感应式能量传输以及谐振变换器。E-mail: fhdtc2008@hust.edu.cn。

引用本文:

丰昊, 蔡涛, 段善旭, 赵锦波, 张晓明. 一种抗宽范围耦合系数波动的三元件补偿型感应式能量传输系统[J]. 电工技术学报, 2017, 32(增刊2): 10-17. Feng Hao, Cai Tao, Duan Shanxu, Zhao Jinbo, Zhang Xiaoming. A Three-Element Inductive Power Transfer System with High Misalignment Tolerance. Transactions of China Electrotechnical Society, 2017, 32(增刊2): 10-17.

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