By Stephanie Seay/ORNL
Researchers at Oak Ridge National Laboratory have demonstrated a 120-kilowatt wireless charging system for vehiclesâ€”providing six times the power of previous ORNL technology and a big step toward charging times that rival the speed and convenience of a gas station fill-up.
The wireless system transfers 120 kilowatts of power with 97 percent efficiency, which is comparable to conventional, wired high-power fast chargers. In the laboratory demonstration, power was transferred across a six-inch air gap between two magnetic coils and charged a battery pack.
ORNL researchers created and demonstrated the worldâ€™s firstÂ 20-kilowatt wireless charging system, which is being modified for applications such as commercial delivery trucks.
â€œIt was important to maintain the same or smaller footprint as the previous demonstration to encourage commercial adoption,â€ said project lead Veda Galigekere of ORNLâ€™s Power Electronics and Electric Machinery Group. [Read more…]