Frequency splitting of underwater wireless power transfer

Numerical simulations are used to investigate the frequency splitting phenomena of a symmetrical 2-coil wireless power transfer (WPT) system working under seawater and fresh water. It is found that a V-type frequency splitting pattern exists in the WPT system under seawater and fresh water, and also frequency shift is observed in the underwater WPT system in overcoupled regime, and no frequency shift is observed in the underwater WPT system in undercoupled regime.