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2025-10-27
Research on Control of Wireless Power Transfer System Based on Switched Inductor
By
Progress In Electromagnetics Research C, Vol. 161, 56-65, 2025
Abstract
During the vehicle parking process, misalignment between transmitting and receiving coils caused by different parking positions results in variations in the system's mutual inductance. These variations compromise system performance and stability. To address this challenge, this study proposes a control strategy for a wireless power transfer system utilizing switched inductors. First, an efficiency optimization method based on tunable inductors is introduced in detail. This method eliminates the need for bilateral communication or additional hardware. By dynamically adjusting the switched inductor values, the system maintains optimal load conditions across various topologies. Furthermore, switched capacitors are employed to achieve system resonance tuning. Second, a phase-shift control strategy is implemented to ensure efficient system operation while maintaining constant voltage output. Finally, an experimental prototype is constructed to validate the proposed approach. Experimental results demonstrate that the proposed control method achieves a constant output voltage of 24 V with system efficiency exceeding 81%.
Citation
Zhongjiu Zheng, Yanpeng Ma, Zhilong Wu, Xingfeng Cao, Qiangqiang Zhao, and Fuyu Song, "Research on Control of Wireless Power Transfer System Based on Switched Inductor," Progress In Electromagnetics Research C, Vol. 161, 56-65, 2025.
doi:10.2528/PIERC25080801
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