电工技术学报  2018, Vol. 33 Issue (10): 2237-2244    DOI: 10.19595/j.cnki.1000-6753.tces.170720
电力系统及其自动化 |
一种电场耦合式无线电能传输系统无源谐振元件电压优化方法
陈阳琦, 陈丽华, 罗博, 胡杰, 麦瑞坤
西南交通大学电气工程学院 成都 610031;
Voltage Optimization Method of Passive Resonant Elements in Electric Field Coupled Power Transmission System
Chen Yangqi, Chen Lihua, Luo Bo, Hu Jie, Mai Ruikun
School of Electrical Engineering Southwest Jiaotong University Chengdu 600031 China;
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摘要 电场耦合式无线电能传输系统由于其耦合电容较小,工作频率偏高,在运行过程中无源谐振元件往往承受较大电压。特别是在系统最大功率点,较大的电压可能会击穿元件,导致系统失谐,甚至引起安全问题。针对这一问题,提出一种可优化系统无源谐振元件电压的方法。该方法基于CLLC-L拓扑结构,通过合理配置无源谐振元件参数,降低谐振元件所承受的最大电压。基于所提理论,设计传输距离为150mm、等效耦合电容仅为13pF的电场耦合式无线电能传输系统,在其传输为2.12kW功率时,直流到直流效率达89%。最优参数下无源谐振元件实验电压与计算电压基本吻合,且最大实验电压小于对比组最大实验电压。该实验结果表明,所提出的电压优化方法可有效限制无源谐振元件的最大电压,从而提高系统安全裕度。
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陈阳琦
陈丽华
罗博
胡杰
麦瑞坤
关键词 电场耦合无线电能传输无源谐振元件电压优化    
Abstract:In electric field coupled power transfer system, the passive resonant components often bear a large voltage due to its small coupling capacitance and high operating frequency. Especially at the system maximum power point, high-level voltage may break down components, causing system detuning and even causing safety problems. In order to overcome this problem, this paper presents a method to optimize the voltage of passive resonant elements. This method, according to the CLLC-L topology, achieves the optimized voltage of the passive resonant elements by reasonably configuring the parameters of the passive resonant elements. Based on the proposed method, this paper designs a capacitive power transmission system with transmission distance of 150mm and equivalent coupling capacitance of only 13pF. When the transmitting power reaches 2.12kW, the DC-DC system efficiency is up to 89%. The coincidence between the experimental voltage and the calculated voltage shows that the voltage optimization method can effectively lower the voltage stress of the passive resonant elements, which improves the safety margin of the system.
Key wordsElectric field coupling    wireless power transfer (WPT)    passive resonant elements    voltage optimization   
收稿日期: 2017-05-31      出版日期: 2018-05-24
PACS: TM724  
基金资助:四川省青年科技基金项目(2016JQ0033)和广东省省级科技计划(2015B010128002)资助
通讯作者: 麦瑞坤 男,1980年生,副教授,博士生导师,研究方向为无线电能传输技术及其控制。E-mail: mairk@swjtu.cn   
作者简介: 陈阳琦 男,1993年生,硕士研究生,研究方向为电场耦合式无线电能传输技术。E-mail: cyqswjtu2015@163.com
引用本文:   
陈阳琦, 陈丽华, 罗博, 胡杰, 麦瑞坤. 一种电场耦合式无线电能传输系统无源谐振元件电压优化方法[J]. 电工技术学报, 2018, 33(10): 2237-2244. Chen Yangqi, Chen Lihua, Luo Bo, Hu Jie, Mai Ruikun. Voltage Optimization Method of Passive Resonant Elements in Electric Field Coupled Power Transmission System. Transactions of China Electrotechnical Society, 2018, 33(10): 2237-2244.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.170720          https://dgjsxb.ces-transaction.com/CN/Y2018/V33/I10/2237