Design and optimization of self-compensating multi-relay wireless power transmission system with metal flanges

A multi-relay wireless power transmission (WPT) system composed of self-compensating PCB spiral coils with high quality factor is designed, which is used in 110kV insulators to power transmission line detection equipment. A design method of self-compensating PCB spiral coil is proposed, and a resonant coil with high quality factor is fabricated. The influence of the two metal flanges of the insulator on the energy transmission of the system is analyzed, and the system coil settings are optimized to improve the transmission efficiency.