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High-efficiency CC/CV Output Regulating Method for UAV-WPT System Based on Voltage-controlled Capacitor
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Jihao TIAN1, Lingyun ZHOU2, Shunpan LIU2, Ruikun MAI2
Journal of Power Supply | 2026, 24(2) : 244 - 253
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Journal of Power Supply | 2026, 24(2): 244-253
• Wireless Power Transfer •
High-efficiency CC/CV Output Regulating Method for UAV-WPT System Based on Voltage-controlled Capacitor
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Jihao TIAN1, Lingyun ZHOU2, Shunpan LIU2, Ruikun MAI2
Affiliations
  • 1.Tangshan Institute, Southwest Jiaotong University, Tangshan 063000, China
  • 2.School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
Published: 2026-02-28 doi: 10.13234/j.issn.2095-2805.2026.2.244
Outline
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The wireless power transfer (WPT) technology, which can provide flexible and convenient power supply for unmanned aerial vehicles (UAVs) without human assistance, is an important research direction for the intelligent development of UAVs in the future. To meet the practical requirements of lightweight, constant current (CC) and constant voltage (CV) charging, and a high-power transmission efficiency for a UAV-WPT system, a high-efficiency CC/CV output regulating method for the UAV-WPT system based on voltage-controlled capacitor (VCC) is proposed. On the transmitter side, a VCC is utilized as the compensated capacitor. By dynamically adjusting the equivalent impedance of the VCC, the output current and voltage from the system can be effectively controlled. Meanwhile, zero-voltage switching can also be achieved in the inverter in a wide load range without any extra auxiliary power sources or inductors. The operating principle for the proposed UAV-WPT system and its power loss model are analyzed in detail. In addition, a DC bias voltage regulation module, a closed-loop control strategy and a parameter design method for the VCC are designed. Experimental results show that under the rated output conditions of 25.2 V and 6 A, the system’s overall efficiency can reach 88.8%.

Unmanned aerial vehicle (UAV)  /  wireless power transfer (WPT) technology  /  constant current (CC)/constant voltage (CV) control  /  voltage-controlled capacitor (VCC)  /  zero-voltage switching  /  lightweight
田继浩, 周凌云, 刘顺攀, 麦瑞坤. 基于压控电容的无人机WPT系统高效率恒流/恒压输出调节方法. 电源学报, 2026 , 24 (2) : 244 -253 . DOI: 10.13234/j.issn.2095-2805.2026.2.244
Jihao TIAN, Lingyun ZHOU, Shunpan LIU, Ruikun MAI. High-efficiency CC/CV Output Regulating Method for UAV-WPT System Based on Voltage-controlled Capacitor[J]. Journal of Power Supply, 2026 , 24 (2) : 244 -253 . DOI: 10.13234/j.issn.2095-2805.2026.2.244
Funding
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  • Natural Science Foundation of Hebei Province(E2022105047)
  • Sichuan Science and Technology Innovation and Entrepreneurship Seedling Project(2022JDRC0078)
  • Sichuan Province Science and Technology Innovation Seedling Project(MZGC20230014)
Appendix
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Year 2026 volume 24 Issue 2
40
8
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Article Info
doi: 10.13234/j.issn.2095-2805.2026.2.244
  • Receive Date：2023-02-06
  • Online Date：2026-10-29
  • Published：2026-02-28
Article Data
Affiliations
History
  • Received：2023-02-06
  • Revised：2023-06-08
  • Accepted：2023-07-13
Funding
Natural Science Foundation of Hebei Province(E2022105047)
Sichuan Science and Technology Innovation and Entrepreneurship Seedling Project(2022JDRC0078)
Sichuan Province Science and Technology Innovation Seedling Project(MZGC20230014)
Affiliations
    1.Tangshan Institute, Southwest Jiaotong University, Tangshan 063000, China
    2.School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
References
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https://castjournals.cast.org.cn/joweb/dyxb/EN/10.13234/j.issn.2095-2805.2026.2.244
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