一种电动汽车动态无线充电的负载检测方法及导轨切换策略  

Load Detection Method and Rail Switching Strategy for Dynamic Wireless Charging of Electric Vehicles

作　　者：郭敏 肖静 吴宁 祝文姬 冯玉斌 李克文 GUO Min;XIAO Jing;WU Ning;ZHU Wenji;FENG Yubin;LI Kewen(Guangxi Power Grid Electric Power Research Institute,Nanning 530023,Guangxi Zhuang Autonomous Region,China)

机构地区：[1]广西电网有限责任公司电力科学研究院,广西壮族自治区南宁市530023

出　　处：《电网技术》2021年第3期1181-1187,共7页Power System Technology

基　　金：南方电网公司科技项目(GXKJXM20162018)。

摘　　要：为实现分段导轨模式的电动汽车移动无线充电过程中,系统对于负载接入的有效检测并适时在低功率待机模式与功率输出模式之间的转换,提出一种基于原副边均为LCC补偿结构的负载检测方法以及导轨功率输出控制策略。基于分段导轨模式电动汽车动态无线充电过程以及双LCC补偿结构的数学模型,得到电动汽车在一段导轨上行驶位移与原边逆变电流之间数学关系,通过检测和分析原边逆变电流判断导轨是否进行功率发射,仿真和实验验证了该方法的有效性。In the mobile wireless charging process of the electric vehicle in the segmented rail mode,in order for the primary side resonance network to effectively detect the load access and timely convert between the low power standby state and the power output state,this paper proposes a load detection method with an LCC compensation structure on each original secondary side and a rail power output control strategy.Based on this dynamic wireless charging process of the electric vehicle in the segmented guide mode and the mathematical model with a double LCC compensation structure,the mathematical relationship is obtained between the lateral displacement of the electric vehicle on the primary rail and the input current of the primary side.Whether the guide rail is in the power transmission state is determined through detecting and analyzing the input current of the primary side.Simulation and experiment verify the effectiveness of the method.

关 键 词：无线充电 LCC补偿结构 负载检测 导轨切换 

分 类 号：TM721[电气工程—电力系统及自动化]