摘要
由于目前无人机WPT系统中存在耦合机构机载端质量大、体积大、抗偏能力差以及电磁干扰大的问题,该文提出一种轻量化抗偏无线输电耦合机构和一种基于F-LCCL型单侧谐振补偿网络的无人机WPT系统。首先,分析了无人机对于耦合机构的设计需求,提出一种具备轻量化和抗偏特性的电场耦合机构设计思路,从结构设计、电场分布和抗偏能力三方面展开分析。然后,设计F-LCCL型单侧谐振补偿网络,对系统进行理论建模及输出特性分析,并基于该谐振补偿网络设计无人机无线电能传输系统。最后,搭建仿真及实验平台,对系统的无线电能传输能力、抗偏特性和输出特性三个方面进行仿真分析和实验验证。结果表明,所提方案机载侧具备较强的轻量化抗偏水平,且在一定负载变化范围内具备变负载恒压输出特性。
In recent years,the domestic and international civil UAV market has been developing rapidly,and UAVs have been widely used in various fields,such as electric power inspection,traffic monitoring,firefighting and rescue,agricultural plant protection,environmental mapping,and infrastructure inspection.However,the current challenge facing unmanned aerial vehicle(UAV)applications is the limited battery capacity,which cannot meet the demand for long endurance of UAVs.The emergence of wireless energy transmission(WPT)technology provides a new energy supply for UAVs and has a broad application prospect in the UAV field.Due to the problems of heavy mass,large volume,poor bias resistance,and electromagnetic interference at the onboard side of the coupling mechanism in the current UAV WPT system,a"uniformly drilled disc-circle-circle composite"electric field coupling mechanism and a UAV WPT system based on the F-LCCL-type single-side resonance compensation network are proposed.The lightweight level and anti-bias capability of the airborne side are effectively improved,and the variable load constant voltage output characteristics are provided within a specific load variation range.Firstly,the practical requirements of the UAV wireless power transmission coupling mechanism were analyzed and summarized,and a design idea of a lightweight bias-resistant wireless power transmission coupling mechanism was proposed,considering structural design,electric field distribution,and bias-resistant capability.Secondly,the system theory was analyzed,and the system circuit based on the F-LCCL single-side resonance compensation network was designed without any reactive power compensation element on the onboard side.The radio energy’s efficient and stable transmission was ensured,and the lightweight of the onboard side was realized from the aspect of the resonance compensation network.In addition,the theoretical analysis shows that the system circuit based on the F-LCCL single-side resonance compensation network has the characteristics of variable load constant voltage output within the design offset range.The finite element simulation was carried out,and a system simulation circuit based on Matlab/Simulink simulation software and an experimental device were built.The simulation and experimental results show that the scheme proposed can effectively solve the problems of heavy mass,large volume,poor bias resistance,occupying space in the belly of the aircraft,and large electromagnetic interference at the onboard end of the coupling mechanism.Efficient and stable wireless energy transmission to the battery load of the UAV is achieved.The following conclusions can be drawn.(1)The proposed coupling mechanism has 360°angular deflection resistance and strong lateral deflection resistance.The lightweight onboard side is realized.(2)The F-LCCL single-side resonance compensation network has no compensation element on the secondary side,which realizes the light weight of the onboard side from the resonance compensation network.(3)The system has variable load constant voltage output characteristics within a specific load variation range.
作者
张鑫
杨帅鑫
王文杰
范兴明
Zhang Xin;Yang Shuaixin;Wang Wenjie;Fan Xingming(School of Mechanical and Electrical Engineering Guilin University of Electronic and Technology,Guilin 541004 China)
出处
《电工技术学报》
北大核心
2025年第14期4343-4354,共12页
Transactions of China Electrotechnical Society
基金
国家自然科学基金(61741126)
广西自然科学基金(2022GXNSFAA035533)
桂林电子科技大学研究生教育创新计划(2024YCXS014)资助项目。
关键词
无人机
无线电能传输
耦合机构
轻量化
抗偏
Unmanned aerial vehicle(UAV)
wireless power transfer
coupling mechanism
lightweight
anti-bias
