Self‑decoupled coupler based dual‑coupled LCC‑LCC rotating wireless power transfer system with enhanced output power

This paper proposes a rotating wireless power transfer system with dual-coupled LCC-LCC topology based on a self-decoupled rotary coupler for addressing the issues of wear and short lifespan associated with traditional electric brush slip rings. In comparison to the conventional single-coupled LCC-LCC topology, the proposed system results in a signifi cant increase in output power and a more compact structure. First, the dual-coupled LCC-LCC topology circuit system is analyzed. A self-decoupled rotary coupler incorporating two pairs of coupled coils is proposed. Second, through the utilization of simulation software, the eff ects of coil dimension, turns, and magnetic shielding on the self-inductance and coupling coefficients are analyzed, optimizing the coupler for compactness and miniaturization. Third, an experimental setup is established to validate the self-decoupled performance and power enhancement capabilities of the designed coupler. Experimental results demonstrate that, under positive conditions, the proposed self-decoupled coupler achieves a system transmission power of 62.54 W, which is 240% higher than that of single-coupled systems, albeit with an 11.2% effi ciency decrease. This system is suitable for rapid charging in rotary applications.

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Cite this article

[IEEE Style]

Z. Guo, J. Li, L. Wang, Y. Peng, Q. Si, G. Luo, "Self‑decoupled coupler based dual‑coupled LCC‑LCC rotating wireless power transfer system with enhanced output power," Journal of Power Electronics, vol. 25, no. 3, pp. 416-427, 2025. DOI: 10.1007/s43236-024-00905-2.

[ACM Style]

Zheyuan Guo, Jiangui Li, Longyang Wang, Yinchong Peng, Qinghe Si, and Guangbin Luo. 2025. Self‑decoupled coupler based dual‑coupled LCC‑LCC rotating wireless power transfer system with enhanced output power. Journal of Power Electronics, 25, 3, (2025), 416-427. DOI: 10.1007/s43236-024-00905-2.