Dynamic Wireless Charging of an Electric Vehicle

IEEE Paper for Demonstrating Dynamic Wireless Charging of an Electric Vehicle: The Benefit of Electrochemical Capacitor Smoothing

Dr Raymond Sepe and the Electro Standards Research and Development Team worked with Oak Ridge National Laboratory to fabricate a passive and active parallel lithium Capacitor to smooth the grid-side power. Created for a wireless charging of an electric vehicle while in motion.

Below is the abstract for the paper but IEEE members can read the entire paper at

https://ieeexplore.ieee.org/document/6766880

Abstract:

The wireless charging of an electric vehicle (EV) while it is in motion presents challenges in terms of low-latency communications for roadway coil excitation sequencing and maintenance of lateral alignment, plus the need for power-flow smoothing. This article summarizes the experimental results on power smoothing of in-motion wireless EV charging performed at the Oak Ridge National Laboratory (ORNL) using various combinations of electrochemical capacitors at the grid side and in the vehicle. Electrochemical capacitors of the symmetric carbon-carbon type from Maxwell Technologies comprised the in-vehicle smoothing of wireless charging current to the EV battery pack. Electro Standards Laboratories (ESL) fabricated the passive and active parallel lithium-capacitor (LiC) unit used to smooth the grid-side power. The power pulsation reduction was 81% on the grid by the LiC, and 84% on the vehicle for both the LiC and the carbon ultracapacitors (UCs).

For more information regarding this type of technology, please contact Dr. Raymond Sepe at 401-943-1164 or eslab@electrostandards.com.