摘要
无线电能传输技术是一种安全、便利和自主的充电方式,动态无线电能传输是解决电动汽车续航里程短、车载电池成本高的关键技术。本文设计了一种新颖的能量分布式动态供电系统,高频逆变器连接多组开关控制的LC串联补偿可根据汽车位置自动分配能量。根据系统设计,推导了单线圈和双线圈系统效率和功率表达式,搭建了仿真电路和实验平台,分析了传输距离、移动距离、耦合角度及负载大小对系统传输性能的影响。实验样机的输出功率为3.3k W,工作频率为120k Hz,效率可超过90%,可为电动汽车提供连续供电。
Wireless power transmission(WPT)technology is a kind of safe,convenient and autonomous way to charge.Dynamic wireless power transmission technology is the key to solve the problems of the electric vehicle’s short mileage and high cost of battery.In this paper,the new energy distributed dynamic power supply system is designed.The independent high-frequency inverter is connected in series with multiple sets of LC-series compensated structures controlled by switches.The energy is automatically assigned according to the position of the vehicle.According to the design,the formulas of the output power and the efficiency are obtained.The simulation model and the test platform are built up.The influences of transition distance,movement distance,coupling angle and load on transition performance of system are analyzed.The prototype can realize that output power is 3.3kW,frequency is 120kHz and the efficiency is higher than 90%,which satisfies the continuous electric power supply for electric vehicles.
作者
赵靖英
赵纪新
邢英翔
崔玉龙
ZHAO Jing-ying;ZHAO Ji-xin;XING Ying-xiang;CUI Yu-long(School of Electrical Engineering,Hebei University of Technology,Tianjin 300130,China;School of Information Science and Technology,Beijing University of Chemical Technology, Beijing 100029,China)
出处
《电工电能新技术》
CSCD
北大核心
2018年第7期67-74,共8页
Advanced Technology of Electrical Engineering and Energy
基金
国家科技支撑计划项目(2015BAA09B00)
河北省高等学校科学技术研究项目(QN20131165)
关键词
无线电能传输
电动汽车
动态供电
磁耦合谐振
wireless power transfer(WPT)
electric vehicle(EV)
dynamic charging
magnetically coupled resonance
