Backstepping-Based Phase-Shift Control for Mitigating Voltage Variation in Dynamic Wireless Charging
Conference
Behnamfar, M, Sarwat, A. (2025). Backstepping-Based Phase-Shift Control for Mitigating Voltage Variation in Dynamic Wireless Charging
. 10.1109/ETFG61999.2025.11401912
Behnamfar, M, Sarwat, A. (2025). Backstepping-Based Phase-Shift Control for Mitigating Voltage Variation in Dynamic Wireless Charging
. 10.1109/ETFG61999.2025.11401912
Dynamic wireless charging (DWC) offers a promising solution to alleviate range anxiety in electric vehicles by enabling uninterrupted charging while driving. However, fluctuations in mutual inductance during vehicle movement can lead to output voltage instability, reducing battery life and overall system performance. To address this, the paper introduces a phase shift control approach based on backstepping, which adjusts the conduction angle of the semi-active rectifier to regulate output voltage. Unlike conventional methods, this strategy results in a nearly purely resistive equivalent AC load, eliminating the need for extra control to compensate for reactive components. The proposed controller is tested under varying load conditions and reference voltages while the receiver is in motion. Results confirm its ability to suppress voltage ripple to below 1% and maintain stable output regardless of load variations.
