Coil Design and Shielding Method for Resonant Wireless Charging System

Resonant wireless charging technology can overcome many shortcomings of traditional charging methods and is favored by universities and research institutions in the world. However, the inevitable leakage flux during transmission may cause electromagnetic interference problems. First of all, this paper designs a set of coils for resonant wireless charging system with the background of wireless charging of slow-moving inspection robots. Secondly, the magnetic field distribution around the coil is analyzed, and some indicators are established to evaluate its shielding performance. Some shielding designs are simulated where the magnetic induction intensity exceeds the standard. Finally, the shielding method is validated by experiments, and some guiding suggestions are put forward for the safe development of wireless charging system.