Oak Ridge National Laboratory demonstrates first 270-kW recharge via polyphase wireless charging system. But ... but the crucial factors are the design and unique geometry of the polyphase coils.

And it’s that reason the biggest innovation here is that this polyphase coil can produce bipolar electromagnetic fields (EMFs) on three-phase AC power with a 120-degree shift between each phase ...

Scientists at the Oak Ridge National Laboratory in Tennessee used a "polyphase electromagnetic coupling coil" with rotating magnetic fields to wirelessly charge a Hyundai Kona EV, which has an ...

ORNL’s Omer Onar, left, power electronics research lead, discusses the 270-kW wireless charging system’s lightweight polyphase electromagnetic coupling coil, pictured in foreground, with Lee ...

A receiver coil was fitted to a Hyundai Kona EV, which parked over a 14-inch diameter polyphase transmitter, with a five-inch air gap in between.

The polyphase electromagnetic coupling coil’s small, lightweight design allows for the highest power density within the smallest coils possible – they have a diameter of just over 14 inches.

Using a novel polyphase wireless charging system that was seamlessly integrated into the EV’s underbody, researchers managed to transfer a peak power of 270 kW to the German sports sedan–the ...

Using a novel polyphase wireless charging system that ... The power transfer system invented by the ORNL uses lightweight electromagnetic coupling coils with a diameter of just over 19 inches ...

Researchers at the Department of Energy’s Oak Ridge National Laboratory have successfully demonstrated the first 270-kW wireless power transfer to a light-duty electric vehicle. The demonstration used ...

The magic comes from a polyphase electromagnetic coupling coil, a design ORNL’s been working on for at least three years. A paper the lab put out in 2022 claimed, ...

The system uses a pair of polyphase electromagnetic coupling coils about 50 cm (19″) wide to transfer the power over a gap of approximately 13 cm (5″).

And it’s that reason the biggest innovation here is that this polyphase coil can produce bipolar electromagnetic fields (EMFs) on three-phase AC power with a 120-degree shift between each phase ...