A single-coil magnetic resonant coupling wireless power transmission system requires that the transmitting coil makes an exact alignment with the receiving coil

thus limiting the practical application of the system. The multi-coil system by configurating coil array

utilizes analog beamforming algorithm to achieve the maximum energy transmission at the receiver. Specifically

the phases of magnetic field beams can be superimposed at the receiver by changing the relative phase of the voltage and current. A wireless energy transmission system based on phase control is designed. The phase of transmitted waveform is changed by adaptive algorithm

so that the receiving coil can obtain higher energy. The system simplifies the design of the power amplifier while guaranteeing omnidirectional high efficient energy receiving of receiving end. The test results of the wireless energy transmission device show that the system can work reliably and efficiently.