Design to Minimize Coupling Coefficient between Transmitter Coils based on Deep Learning for Wireless Power Transfer with Multi-Transmitter

The wireless charging pad with multiple transmitter (TX) coils has the advantage of solving the misalignment problem, high efficiency, and low leakage magnetic field. However, since the multi-TX wireless power transfer(WPT) system has coupling coefficients between TX coils, k(TX). It changes the resonance point of the TX and causes a problem in that efficiency and power delivered to the receiver are drastically reduced. This paper analyzes the effect of k(TX) according to the operation of the TX coils and proposes an arrangement method by Deep Learning model that makes k(TX) to zero. A learning model is constructed using Deep Neural Network, and the model can output the distance where k(TX) can become zero when the coil specification is input.