In a multi-relay wireless power transfer system, the cross-coupling phenomenon between non-adjacent coils will reduce the output power and efficiency of the system. To address the cross-coupling phenomenon in multi-relay wireless power transfer systems, a circular DD coil relay with relative rotation between relays is proposed. By designing the structure of a single coil and the relative rotation angle between coils, the cross-coupling phenomenon in the multi-relay wireless power transfer system is eliminated. Experimental results show that the multi-relay wireless power transfer system using circular DD coil relays can effectively solve the problem of cross-coupling and improve output power and transmission efficiency. In addition, the constant voltage output frequency of the system is studied, which can maintain a constant output voltage when the load changes.

Guanjia Zuo. A Multi-Relay Wireless Power Transfer System Without Cross Coupling. Academic Journal of Computing & Information Science (2026), Vol. 9, Issue 2: 86-92. https://doi.org/10.25236/AJCIS.2026.090212.

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