Fig. 1From: An improved three-coil wireless power link to increase spacing distance and power for magnetic resonant coupling systemStructure diagram of three-coil power link and experimental system. a The working principle of the three-coil wireless charging system. The waveform is generated through the DDS circuit. After multilevel amplification, the power is loaded onto the resonant coil. b The way of power loading, which improves the power conversion efficiency by the way of central feeding. The power supply prototype used in the experiment is shown in c. a The structure diagram of three-coil power link. b The way of feed. c The dashboard of power amplifierBack to article page