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Primary-side control design for high-efficiency wireless power transfer system in hybrid energy storage system
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Jun WU1, Hongping XIE1, Jun KONG1, Chao HAN1, Ke SUN1, Zhiwei LIU1, Youkang WANG2, Sugang LI2, Shiqing ZHANG2, Chaoran YANG2
Thermal Power Generation | 2026, 55(2) : 170 - 179
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Thermal Power Generation | 2026, 55(2): 170-179
• Multi-type energy storage-assisted peak and frequency regulation technology •
Primary-side control design for high-efficiency wireless power transfer system in hybrid energy storage system
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Jun WU1, Hongping XIE1, Jun KONG1, Chao HAN1, Ke SUN1, Zhiwei LIU1, Youkang WANG2, Sugang LI2, Shiqing ZHANG2, Chaoran YANG2
Affiliations
  • 1.State Grid Jiangsu Electric Power Engineering Consulting Co., Ltd., Nanjing 210011, China
  • 2.School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Published: 2026-02-25 doi: 10.19666/j.rlfd.202508047
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An efficient and feasible primary-side control method is proposed for the hybrid energy storage system (HESS) and wireless power transfer (WPT) system. This method can enable the system to dynamically maintain maximum power transfer under different charging states of the hybrid energy storage unit and keep the switching transistors of the Class E power amplifier (Eop) in a soft-switching operating state, ensuring stable and efficient wireless energy supplementation for the hybrid energy storage system. The system topology consists of an Eop, a series-series (S-S) type WPT circuit, and HESS. Based on the analysis of WPT transmission characteristics and Eop soft switching characteristics under different charging modes, the Eop optimal frequency tracking control and Eop soft switching duty cycle control strategies for HESS wireless charging are proposed. The key advantage is that all control mechanisms are located on the transmitting side, which can effectively reduce the volume of additional circuits in the energy storage unit on the receiving side and improve the volumetric energy density of the system. Finally, an experimental prototype is built based on the ZYNQ controller, and the experimental results show that the system can achieve efficient and stable wireless power transfer under different charging states and coupling conditions of the hybrid energy storage.

hybrid energy storage system  /  wireless power transfer  /  load disturbance  /  coil coupling coefficient
Jun WU, Hongping XIE, Jun KONG, Chao HAN, Ke SUN, Zhiwei LIU, Youkang WANG, Sugang LI, Shiqing ZHANG, Chaoran YANG. Primary-side control design for high-efficiency wireless power transfer system in hybrid energy storage system[J]. Thermal Power Generation, 2026 , 55 (2) : 170 -179 . DOI: 10.19666/j.rlfd.202508047
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  • Science and Technology Project of State Grid Jiangsu Electric Power Engineering Consulting Co., Ltd.(J202309)
Appendix
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Year 2026 volume 55 Issue 2
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223
104
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Article Info
doi: 10.19666/j.rlfd.202508047
  • Receive Date：2025-08-21
  • Online Date：2026-08-14
  • Published：2026-02-25
Article Data
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History
  • Received：2025-08-21
  • Revised：2025-09-22
  • Accepted：2025-10-14
Funding
Science and Technology Project of State Grid Jiangsu Electric Power Engineering Consulting Co., Ltd.(J202309)
Affiliations
    1.State Grid Jiangsu Electric Power Engineering Consulting Co., Ltd., Nanjing 210011, China
    2.School of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
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