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Research on Optimization Method for Magnetic Coupling Resonant Wireless Charging Coil
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Qingchang YU1, Haoran LI1, 2, Yuyu ZHU1
Journal of Power Supply | 2026, 24(4) : 284 - 292
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Journal of Power Supply | 2026, 24(4): 284-292
• Wireless Power Transfer •
Research on Optimization Method for Magnetic Coupling Resonant Wireless Charging Coil
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Qingchang YU1, Haoran LI1, 2, Yuyu ZHU1
Affiliations
  • 1.School of Information Engineering, Southwest University of Science and Technology, Mianyang 621000, China
  • 2.Chengdu Institute of Innovation, Southwest University of Science and Technology, Chengdu 621010, China
Published: 2026-04-30 doi: 10.13234/j.issn.2095-2805.2026.4.284
Outline
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In a magnetic coupling wireless charging system, the transmission coil is an important part for improving the efficient transmission of electric energy, and its figure of merit directly affects the efficiency of the whole system. To meet the demand of high-efficiency transmission, first, an equivalent circuit model for an S-S compensation topological system was established, and the relationship between the coil’s transmission efficiency and figure of merit was obtained through theoretical derivation, i.e., maximizing the ratio of the coil’s mutual inductance to its internal resistance can achieve high-efficiency transmission. Then, aimed the mutual inductance and internal resistance which were also the main optimization objectives for coil design, the relationship among the coil’s mutual inductance, internal resistance and geometric parameters was deduced theoretically, and it was further refined into a multi-parameter optimal function problem with constraints between the coil’s efficiency and its parameters. Finally, an iterative solution based on the particle swarm optimization algorithm was proposed, and the winding coils with different specifications were made according to the obtained geometric parameters, so as to test the optimization results.

Wireless charging  /  coil efficiency optimization  /  multi-parameter optimization  /  particle swarm optimization algorithm
余庆昌, 李浩然, 朱玉玉. 磁耦合谐振式无线充电线圈的优化方法研究. 电源学报, 2026 , 24 (4) : 284 -292 . DOI: 10.13234/j.issn.2095-2805.2026.4.284
Qingchang YU, Haoran LI, Yuyu ZHU. Research on Optimization Method for Magnetic Coupling Resonant Wireless Charging Coil[J]. Journal of Power Supply, 2026 , 24 (4) : 284 -292 . DOI: 10.13234/j.issn.2095-2805.2026.4.284
Funding
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  • Sichuan Province Key Research and Development Program(2022YFG0259)
  • Doctoral Fund of Southwest University of Science and Technology(23zx7102)
Appendix
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Year 2026 volume 24 Issue 4
27
2
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Article Info
doi: 10.13234/j.issn.2095-2805.2026.4.284
  • Receive Date：2023-08-22
  • Online Date：2026-10-29
  • Published：2026-04-30
Article Data
Affiliations
History
  • Received：2023-08-22
  • Revised：2023-12-26
  • Accepted：2024-01-28
Funding
Sichuan Province Key Research and Development Program(2022YFG0259)
Doctoral Fund of Southwest University of Science and Technology(23zx7102)
Affiliations
    1.School of Information Engineering, Southwest University of Science and Technology, Mianyang 621000, China
    2.Chengdu Institute of Innovation, Southwest University of Science and Technology, Chengdu 621010, China
References
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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