Abstract
Wireless Power Transfer (WPT) has emerged as a transformative technology in applications such as smart devices, battery charging systems, and electric vehicles. Among various WPT techniques, Inductive Power Transfer (IPT) employs loosely coupled coils to enable energy exchange via a near-field magnetic link. However, system performance is highly sensitive to coil misalignment, which adversely affects the magnetic coupling and reduces both power transfer and overall efficiency. This paper presents an intersected coil design methodology using Finite Element Method (FEM) simulations to mitigate the impact of lateral misalignments. The proposed design significantly improves the magnetic coupling coefficient and flux distribution across varying misalignment scenarios. A dual-side inductor-capacitor-capacitor (LCC) compensation network is integrated to maintain efficient energy transfer. Furthermore, a MATLAB/SIMULINK model is developed to analyze power transfer efficiency (PTE) variations in relation to coupling and loading conditions. The proposed system efficiently transfers 6.1 kW with a high DC-DC PTE of 97.8% at perfect alignment condition between coils, even with an extended air gap of 150 mm, demonstrating its robustness and applicability in practical WPT systems.