Design and performance analysis of rectangular coil applied to dynamic wireless power transfer using the finite element method

Electromobility is a key step in reducing our dependence on fossil fuels, whose resources are gradually depleting. By using renewable energy sources to recharge electric vehicles, we can reduce carbon emissions from the transport sector. However, battery storage capacity remains a challenge, making a fast and safe recharging network essential for electric vehicle (EV) drivers. In recent years, several coil designs have been used for Dynamic Wireless Power Transfer (DWPT) charging. This study focuses on the design and analysis of the rectangular coil, as well as its integration into the DWPT system. In this research, the finite element method (FEM) was used to analyze the magnetic flux distribution in the rectangular coil, and to examine the impact of varying the distance between the receiver and transmitter coils. The aim is to determine the energy transfer limits of this coil for different sizes of electric vehicles, while assessing the effect of the ferrite plate associated with the coils. The aim of this work is to find the most functional and optimal configuration of magnetic couplers for a DWPT system. The main magnetic couplers adopted by the system were studied using the finite element method. The results have been analyzed in detail to identify the best option.