Researchers from North Carolina State University (NC State) have developed a new way to fine-tune wireless power transfer (WPT) receivers, making the systems more efficient and functional. WPT systems hold promise for charging electric vehicles, electronic devices, and other technologies.
Researchers have previously shown that it is possible to transmit power wirelessly by using magnetic resonance, but even minor changes in how the transmitter or receiver is tuned can result in faulty power transmission when the resonant frequencies don’t match. A new prototype developed at NC State addresses the problem by automatically and precisely re-tuning the receivers in WPT systems. The researchers focused on receivers because methods already exist that allow researchers to use electronics to precisely tune the transmitters.