Abstract:To realize omnidirectional wireless power transmission, the control methods of magnetic vector rotation and magnetic vector orientation are proposed based on a two-dimensional orthogonal magnetic coupler. First, an LCC/S resonant compensation network with adjustable voltage gain is designed using the fundamental harmonic approximation (FHA) method. Second, the control method of the excitation current is given according to the mechanism of the two control methods, and the relationship between the transmission efficiency difference and position is compared theoretically. From this, the space-time characteristics of the magnetic field in the two control modes are obtained by Ansys/Maxwell simulation, and the feasibility of the two control modes is verified by a Matlab/Simulink simulation model based on the spatial mutual inductance distribution. Finally, an experimental prototype is built to compare the waveform characteristics of the two control methods and measure the spatial distribution of transmission efficiency. The simulation and experimental results show that two control methods can be applied to the orthogonal magnetic coupler for omnidirectional wireless power transmission, and the efficiency of the magnetic vector orientation is better than that of the magnetic vector rotation, with an average efficiency increase of 33.18%.