基于双LCC结构系统电动汽车负载短路的动态解耦方式  

Dynamic Decoupling Method of Load Short Circuit of EV-WPT System Based on Double LCC Structure

作　　者：肖静 郭敏 祝文姬 吴敏 姚知洋 XIAO Jing;GUO Min;ZHU Wenji;WU Min;YAO Zhiyang(Electric Power Research Institute of Guangxi Power Grid Co.,Ltd.,Nanning 530023,China)

机构地区：[1]广西电网有限责任公司电力科学研究院

出　　处：《电器与能效管理技术》2019年第17期63-70,共8页Electrical & Energy Management Technology

基　　金：南方电网公司科技项目(GXKJXM20162018)

摘　　要：针对电动汽车无线充电系统运行过程中可能会出现的异常情况,为实现对充电电路的保护,提出了一种基于原二次侧均为LCC补偿结构,通过使负载短路的方式实现对负载解耦的方法。基于LCC补偿结构的数学模型,分析负载解耦暂态响应过程,得出LCC结构短路负载会产生冲击电流,并优化解耦方法,以分级解耦的方式降低冲击电流。最后,对所提方法进行了仿真分析和试验验证,结果验证了所提数学模型的正确性与方法的适用性。For the electric vehicle during the wireless charging process,the over-current and over-voltage may occur,so that the load may be overloaded.The load short-circuit protection mode based on the double LCC resonance compensation circuit is designed.Based on the mathematical model of LCC compensation structure,the load decoupling transient response process is analyzed to conclude that the LCC short-circuit load will produce impact curreut.The decoupling method is optimized to decrease impact curvent by hierarchical decoupling mode.Finally,the simulation and experimental verification of the proposed method are carried out.The results verify the correctness of the proposed mathematical model.

关 键 词：无线电能传输 双LCC结构 短路方式 动态解耦 

分 类 号：TM76[电气工程—电力系统及自动化]