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Design of a High‑Efficiency Dynamic Wireless Charger for Electric Vehicles
Majid Moghaddam
Abstract:   (24 Views)
The widespread adoption of electric vehicles (EVs) is hindered by battery-related limitations, including high cost, excessive weight, long charging times, and insufficient charging infrastructure. This study presents an inductive wireless power transfer (WPT) system as a practical step toward dynamic wireless power transfer (DWPT), aiming to reduce the required onboard battery capacity and weight. The proposed system employs an H‑bridge inverter with sinusoidal pulse width modulation (SPWM). A three‑phase diode bridge rectifier followed by an active power factor correction (PFC) boost converter with zero‑voltage switching (ZVS) converts the three‑phase AC input into a 600 V DC link. The switching frequency is optimized at 100 kHz to minimize losses and maximize power transfer efficiency. Both air‑core and ferrite‑core coil configurations are simulated and modelled with an approximate 10 cm air gap, representing the typical clearance between the road and the EV underbody. The system wirelessly transfers 2.4 kW of power to the EV, achieving a coil‑to‑coil efficiency exceeding 96%. The received high‑frequency AC power is then rectified and smoothed by a synchronous rectifier and an LC output filter, delivering a stable 200 V DC output suitable for constant‑current/constant‑voltage (CC‑CV) charging of the EV battery pack. The results confirm the feasibility of in‑motion wireless charging as a practical solution to key EV limitations.
Keywords: Electric Vehicle, Wireless Power Transfer, Dynamic Wireless Power Transfer, Inductive Power Transfer, Coil‑to‑Coil Efficiency.
Full-Text [PDF 1855 kb]   (7 Downloads)    
Type of Study: Research Paper | Subject: Industrial Electronics
Received: 2026/01/23 | Revised: 2026/09/25 | Accepted: 2026/08/23
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Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Creative Commons License
© 2022 by the authors. Licensee IUST, Tehran, Iran. This is an open access journal distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license.