Wireless Power Transfer for Electric Vehicles using Pulse Density Modulation and LCC-LCC Integration

Wireless Power Transfer (WPT) is essential in making electric vehicle (EV) charging more efficient and convenient. This study explores how integrating Pulse Density Modulation (PDM) with LCC-LCC compensation can enhance the efficiency of WPT systems. Simulations were conducted under different load conditions and pulse density variations to evaluate performance. The results highlight key trends: as the load increased from 5Ω to 25Ω, the output voltage rose from 58.56V to 133.3V, while the current is decreased from 11.71A to 5.33A at a fixed pulse density of 40%. When adjusting the pulse density from 30% to 70%, the system achieved optimal efficiency at 50%, where the voltage peaked at 71.65V and the current at 14.35A. Beyond this point, performance dropped, with voltage falling to 51.51V and current to 10.34A at 70% density. These findings confirm that PDM combined with LCC-LCC compensation provides a stable and efficient approach to wireless EV charging, optimizing power transfer while maintaining system reliability.