Analysis of Wireless Power Transfer Characteristics with Multiple Relay Coils based on COMSOL
By using COMSOL Multiphysics software COMSOL Multiphysics software,the wireless power transfer system with multi-relay coil structure is modeled and analyzed.The results show that with the increase of the number of realy coils,the optimal transmission distance of the transmission power and efficiency increases,but the power and efficiency decrease gradually.The resonant frequency of the system will have frequency deviation,and the frequency splitting phenomenon will occur in the near distance.At the critical coupling distance,keeping each coil evenly placed in the transmission system can achieve higher power and efficiency values.In the actual application,the number of coils should be increased according to the need,and key parameter of transmission distance should be set reasonably.
wireless power transfernumerical analysis relay coilfinite element method