Multi-Transmitter Coils Optimization for Range-Adaptive Wireless Power Transfer by Using Genetic Algorithm

This paper presents a design method for a multi-transmitter wireless power transfer (WPT) system that aims to achieve stable and high-power transfer efficiency (PTE) across a wide range. The proposed method utilizes a Genetic algorithm (GA) to obtain the parameters of three transmitter coils that can cope with different distances. Experimental results demonstrate that the presented 3-transmitter coils outperform the conventional transmitting coil, especially in scenarios where the WPT system operates under misalignment and over longer distances. Even when the receiving coil is moved within a distance range of 30-130mm and an offset range of 0-130mm, the PTE of the system remains above 70% throughout the entire range.