摘要
传统基于电场耦合式的电容能量传输(CPT)系统只含单个逆变电源与单个发射端,由于CPT系统逆变器的容量有限,所以较难满足轨道交通大功率非接触供电应用的需求。为了提高CPT系统的传输功率,提出一种双发射单接收CPT系统,通过两个逆变器并联的方式来提升系统输入功率总容量,实现CPT系统大功率输出。将六极板结构全耦合电容模型简化为三端口等效电路,采用Maxwell有限元分析方法仿真耦合电容值,针对两个发射机构间相互耦合的影响,给出系统谐振电路参数配置方法。最后,详细分析了该系统的工作原理并搭建了系统工作频率为500 kHz的原理样机,在输出功率为1.47 kW的情况下,直流到直流的效率为90.6%。在传递相同功率的前提下,双发射CPT系统流过开关器件的电流为单发射系统的一半,实验结果表明该方法有效且可行。
The traditional capacitive power transfer(CPT)system utilizes single-phase H-bridge inverter and single transmitter to transfer power.Because of the CPT system is limited by the capacity constraints of the inverter,so that it may not be able to meet the high power requirement of rail transit applications.To realize the system’s high power output,dual transmitting and single receiving terminal CPT system is proposed in this paper by paralleling two inverters so that the total capacity of input power is enhanced.The six-plate capacitive coupler model is simplified as three-port circuit,and finite element analysis(FEA)by Maxwell is used to simulate the coupling capacitors.Considering the effect of mutual coupling between two transmitting mechanisms,this paper presents the resonant circuit parameter configuration method.At last,the system’s working principle is analyzed in detail,and an experiment is designed at the working frequency of 500 kHz.The DC-DC efficiency is up to 90.6%when the output power is 1.47 kW.The current flowing through the switching device in the dual transmitters is half of that in the single transmitter with the same power output in the CPT system.The experimental results show that the proposed methods are effective and feasible.
作者
胡杰
陈丽华
罗博
施瑞
麦瑞坤
Hu Jie;Chen Lihua;Luo Bo;Shi Rui;Mai Ruikun(School of Electrical Engineering,Southwest Jiaotong University,Chengdu 610031 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2019年第17期3542-3551,共10页
Transactions of China Electrotechnical Society
基金
国家重点研发计划轨道交通专项课题(2017YFB1201002)
国家杰出青年科学基金(51525702)
中央高校基本科研业务费专项资金前沿交叉基础研究项目(2682017QY01)资助
关键词
电容式无线电能传输
全耦合电容模型
双发射
大功率
Capacitive power transfer
full-capacitive coupling model
dual transmitting terminals
high power
