Three-dimensional transmitter for omnidirectional wireless power transmission: design and experiment

Abstract

The omnidirectional wireless power transmission (WPT) technology have higher degree of freedom and less limitation in direction and space than the traditional WPT technology. This paper proposes a novel three-dimensional transmitter for omnidirectional wireless power transmission technology research. First, the magnetic field intensity distribution generated when three Tx coils are fed with different current phases is evaluated and analyzed. Then, the circuit topology of the system was analyzed and the mutual inductance between the transmitter (Tx) and receiver (Rx) coils was derived. Finally, an omnidirectional WPT experimental system was set up to validate all theoretical analyses.