Design and Performance Evaluation of Solar- Integrated Wireless Electric Vehicle Charging System

The global transition toward electrified transportation is hindered by range anxiety and the carbon footprint of grid-dependent charging infrastructure. This paper presents a Solar- Integrated Wireless Electrical Vehicle Charging System (SWEVCS) optimized for urban micro- mobility. The system integrates a 20 W monocrystalline solar photovoltaic (PV) array with a Series-Series (SS) resonant inductive power transfer (IPT) link. A 12 V/2.5 Ah lithium-ion buffer managed by a TP4056 controller serves as an intermediary storage unit to mitigate solar intermittency. Experimental validation of a scaled prototype demonstrated a peak power delivery of 0.09 W (5 V, 0.018 A) at a 2 cm air gap. The study provides a critical analysis of the "alignment bottleneck," showing a 93% power drop at a 10 cm lateral offset. The novelty of this work lies in its decentralized, off-grid architecture, which supports "last-mile" urban resilience without necessitating large-scale grid upgrades, offering a scalable pathway for sustainable autonomous micro-mobility fleets.