And yes, this technology is inching closer to being ready for the market. The first 20-kilowatt wireless charging system for passenger cars employs a unique architecture that includes in-house developed bits and bobs such as the inverter, isolation transformer, vehicle-side electronics, and coupling technology. OK, so it is a lot slower than the best DC fast charging has to offer. But think about the system this way: getting 30 miles of range in 30 minutes of wireless charging. It doesn’t sound that bad after all, does it?
Better still, the Department of Energy’s Oak Ridge National Laboratory is looking towards the future already. ORNL researchers are looking ahead to 50-kilowatt wireless charging. The thing is, advancing the system to such a power level prompted the researchers to take safety into consideration more than ever before. “The high-frequency magnetic fields employed in power transfer across a large air gap are focused and shielded,” Chinthavali said. “This means that magnetic fringe fields decrease rapidly to levels well below limits set by international standards, including inside the vehicle, to ensure personal safety.” No worries here, then.
What the ORNL has proved with its 20-kilowatt wireless charging system is that the future is happening as we speak and the technology is closer to market than ever. Furthermore, the technology demonstrated in the video attached below is a stepping stone toward the all-electric wonderland of tomorrow.