适用于分段式动态无线充电的T型抗偏移补偿拓扑  

A T-Type High Misalignment Tolerant Compensated Topology for Sectional Track-Based Dynamic Wireless Power Transmission System

作　　者：赵锦波[1,2] 蔡涛[1] 段善旭[1] 丰昊[1] 张晓明[1] Zhao Jinbo;Cai Tao;Duan Shanxu;Feng Hao;Zhang Xiaoming(State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan 430074 China;Laboratory of Low-frequency Electro-magnetic Communication Technology with the 722 Research Institute CSIC Wuhan 430205 China)

机构地区：[1]强电磁工程与新技术国家重点实验室(华中科技大学),武汉430074 [2]中国船舶重工集团公司第七二二研究所低频电磁通信技术实验室,武汉430205

出　　处：《电工技术学报》2017年第18期36-43,共8页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金国际(地区)合作与交流项目(51361130150)资助

摘　　要：近十年无线充电和电动汽车技术发展迅速,但是电动汽车发展遇到动力电池瓶颈和充电难问题,因而动态无线充电方案被提出。针对动态无线充电过程中,传输功率容易随偏移距离变化而剧烈波动的问题,从平缓传输功率波动的角度,在保证高传输效率和软开关的前提下,提出适用于动态无线充电的一次侧T型补偿拓扑及其参数设计方法。所设计T型补偿拓扑具有在宽偏移范围内保持传输功率稳定的特性,降低了一次侧控制系统的调控负担,同时还具有空载限流保护功能。最后搭建了500W原理样机,在侧向偏移百分比小于40%范围内,传输功率基本保持不变,表明了该补偿拓扑和设计方法的有效性。Wireless power transmission(WPT)and electrical vehicle(EV)technology have been rapidly developed in recently decades.However,EVs are not widely accepted by consumers because of the battery bottleneck and recharging difficulties.Thus,the dynamic wireless charging solution is reconsidered.Aiming at the problem that the transmission power is easy to fluctuate with the coupling coils over large misalignment,a primary T-type compensation network from the perspective of smoothing the transmission power is proposed in this paper.Under the premise of ensuring high transmission efficiency and soft switching,the proposed T-type compensation network maintains a stable output characteristic over a wide misalignment.It also has an inherent current limiting ability under no-load operation.A500W WPT prototype is built.The output power maintains almost constant within40percentage of horizontal misalignment,showing the effectiveness of the design method.

关 键 词：电动汽车 动态无线充电 T型补偿拓扑 变耦合系数 软开关 

分 类 号：TM724[电气工程—电力系统及自动化]