摘要
在磁耦合谐振式动态无线电能传输系统中,发射线圈与接收线圈之间的相对水平偏移距离将达到发射线圈边长的一半,此时线圈间互感波动非常剧烈,导致系统无法正常工作。为此该文提出了一种多接收线圈正反串联结构来减小互感波动率。首先,提出了一种矩形线圈互感计算方法,运用提出的互感计算方法,分析了该线圈结构的互感特性;其次,给出了一种互感优化方法,运用提出的优化方法,得到了满足设计要求的各线圈参数;最后,根据得到的线圈参数,研制了一套基于多接收线圈正反串联结构的无线电能传输系统,通过仿真和实验验证了所提结构与方法的正确性。结果显示,运用提出的结构,其线圈间的偏移距离在发射线圈边长一半范围内变化时,线圈间最大互感波动率仅为3.81%。
In dynamic wireless power transfer(DWPT)system via magnetic coupling resonance,the misalignment between the transmission and the receiving coils can reach half of the side length of the transmission coil.At this moment,the variations in mutual inductance are very large.These variations in mutual inductance may harm the stability of the DWPT systems.This paper proposes a multi-receiving positive and negative series coil structure to reduce the fluctuation rate of the mutual inductance.First,a method of calculating the mutual inductance of a rectangular coil is proposed,and the mutual inductance characteristics of the proposed structure are analyzed by using the formula of the mutual inductance calculation.Secondly,an optimization method of the mutual inductance is presented.The parameters of the proposed structure that meet the design requirements are obtained by using the proposed optimization method.Finally,a wireless power transfer system based on the multi-receiving positive and negative serial coil structure is developed according to the obtained parameters.And the correctness of the proposed structure and method is verified through simulation and experiment results.These results show that the maximum fluctuation rate of the mutual inductance between the coils is 3.81%by using the proposed structure when the misalignment between the coils is changed within half of the side length of the transmission coil.
作者
李中启
李上游
李晶
邹瑶
黄守道
Li Zhongqi;Li Shangyou;Li Jing;Zou Yao;Huang Shoudao(College of Electrical and Information Engineering Hunan University,Changsha 412008 China;College of Transportation Engineering Hunan University of Technology,Zhuzhou 412007 China;College of Electrical and Information Engineering Hunan University of Technology,Zhuzhou 412007 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2021年第24期5153-5164,共12页
Transactions of China Electrotechnical Society
基金
国家自然科学基金(11901188)
湖南省教育厅项目(20B186,18A272)
湖南省自然科学基金(2019JJ60055)资助。
关键词
动态无线电能传输系统
互感计算
互感优化
多接收线圈正反串联结构
Dynamic wireless power transfer system
mutual inductance calculation
mutual inductance optimization
multi-receiving positive and negative series coil structure
