Investigation of Dynamic Wireless Power Transfer Technology for Electric Vehicles

Abstract

Wireless power transfer (WPT) is a popular technology that allows electrical loads, like motors or batteries, to receive power from an AC source without the need for physical wiring. This technique can be used for charging the electric vehicles (EVs). Both static and dynamic charging are possible with WPT; vehicles can be charged while moving using the dynamic WPT (DWPT) system. Through transformer windings, energy is transferred from the source to motors or rechargeable batteries via inductive power transfer. Whether the proposed DWPT system is genuinely suitable for real-world electric vehicle applications is put to the test through three complementary methods: MATLAB/Simulink simulation covering the complete power chain, a physical hardware prototype that replicates the key circuit stages, and a side-by-side comparison with established systems from the recent literature. The suggested design uses resonant magnetic coupling and optimized coupling circuits that reduce efficiency loss during lateral misalignment in order to retain high efficiency under realistic circumstances. According to simulation results, the system maintains over 85% efficiency within ±10 cm displacement and reaches up to 92.3% efficiency under perfect alignment. A comparison with cutting-edge techniques shows that the suggested strategy provides better robustness and efficiency. The suggested DWPT method minimizes reliance on huge onboard batteries, improves charging convenience, and decreases EV downtime.