Active Shielding Design of Patrol Robot Wireless Charging System

Abstract

The wireless charging technology (WPT) is a hot research topic at present. Because of its plug-in-free feature, it is very suitable for patrol robots. In order to reduce the influence of wireless charging coupling mechanism on electromagnetic environment in non-working area, a shielding device was designed and its finite element model (FEM) was established. The feasibility of the method was verified by finite element calculation. The simulation results show that the horizontal active shielding coil can significantly reduce the vertical electromagnetic leakage and eddy current loss of the magnetic coupling mechanism, and the vertical active shielding coil can effectively reduce the horizontal electromagnetic leakage, thereby reducing the radiation loss. It is proved that the active shielding coil can enhance the uniformity of space magnetic field and reduce the electromagnetic interference from the wireless charging system of inspection robot.