Article Details

Abstract

To address the issues of weight redundancy, limited mobility, and single-energy dependence caused by traditional wired power supply for near-space solar-powered UAVs, a dual-excitation Wireless Power Transfer (WPT) system based on LCC-S topology is proposed. This system employs solar cells and energy storage batteries as dual transmitters, achieving electrical decoupling between primary and secondary sides and the dual transmitters through resonant compensation network design, while maintaining constant voltage output characteristics. The coils are embedded within the fuselage to balance environmental protection and aerodynamic optimization. Simulation verification using MATLAB/Simulink shows that when the mutual inductance coefficient is 18 μH and the load resistance is 17.6 Ω, the system achieves a transmission efficiency of 82.49%. When the load resistance is 5.6 Ω and the secondary side internal resistance is 0.15 Ω, the peak output power exceeds 500 W. Compared to traditional wired power supply, the system reduces weight by over 60%, meeting the demands for long-duration operation and high-reliability power supply.

Keywords

solar UAV; wireless power transfer; dual excitation system; LCC-S topology; energy efficiency optimization

References

1. [1] Wang H X，Shen J X. Analysis of the Characteristics of Solar Cell Array Based on MATLAB/Simulink in Solar Unmanned Aerial Vehicle [J].IEEE Access，2018，6：21195-21201
2. [2] Sornek K，Augustyn-Nadzieja J，Rosikoń I，et al. Status and Development Prospects of Solar-Powered Unmanned Aerial Vehicles—A Literature Review [J/OL].Energies，2025，18（8）：1924.https://doi.org/10.3390/en18081924.
3. [3] Hima M，Thampatty K C S. Solar Powered Unmanned Aerial Vehicle [C]//2023 7th International Conference on Computer Applications in Electrical Engineering-Recent Advances (CERA)，2023：1-6.
4. [4] Fu Wenxing, Guo Xing, Yan Jie Overview of the Development Trends of Intelligent Unmanned Aerial Vehicle Technology [J]. Unmanned System Technology, 2019, 2 (4): 31-37
5. [5] Zhou Minghua, Liu Fuxin, Chen Xuling, etc Design and Efficiency Optimization of Hybrid Multi coil Structure for Virtual Busbar Multi terminal Wireless Energy Interconnection System [J]. Chinese Journal of Electrical Engineering, 2024, 44 (14): 5693-5702
6. [6] Hu Jinsheng Research on Mutual inductance and Load Identification Method and Output Control Strategy of LCC-S Dual Excitation MC-WPT System [D]. Chongqing: Chongqing University, 2022
7. [7] Zhou S J，Mi C C. Multi-Paralleled LCC Reactive Power Compensation Networks and Their Tuning Method for Electric Vehicle Dynamic Wireless Charging [J].IEEE Transactions on Industrial Electronics，2016，63（10）：6546-6556.
8. [8] Cai Weikun Research on Key Issues of Multi coil Wireless Energy Transmission System [D]. Shanghai: Shanghai Jiao Tong University, 2020
9. [9] Hao H，Covic G A，Boys J T. A Parallel Topology for Inductive Power Transfer Power Supplies [J].IEEE Transactions on Power Electronics，2013，29（3）：1140-1151.
10. [10] Jiang Jincheng Research on Dynamic Identification of Charging Area and Optimal Energy Efficiency Control Method for Multi Incentive Unit WPT System [D]. Chongqing: Chongqing University, 2020

Funding

National College Students' Innovation and Entrepreneurship Training Program of Hefei University of Technology (202510359010)

About the authors

Chao Yuchen (2005-), male, Han ethnicity, from Heze, Shandong Province, is currently pursuing a bachelor's degree with a research focus on aircraft manufacturing engineering; Corresponding author: Li Debao (1973-), male, Han ethnicity, from Hefei, Anhui Province, associate professor, master's supervisor, PhD, research direction: aircraft manufacturing engineering.