New wireless charging technology from Chalmers University promises up to 500 kW of power with less than a 2% loss.
that can replenish batteries with up to 500 kW of power without connecting them to a charger via a cable. They say the new charging equipment is complete and ready to start commercial scale production. The technology is not necessarily intended for charging personal passenger cars, but it could be used by electric ferries,, or autonomous vehicles used in mining or agriculture to charge without using a robotic arm or plugging in.
“Previous systems for vehicle wireless charging have used frequencies of around 20 kHz, much like a normal stove top. They became bulky and the energy transfer was not very efficient. Now we work with frequencies that are four times higher. Then induction suddenly becomes attractive,” explains Liu. He adds that his research group is in close contact with the two leading manufacturers of SiC modules in the world, one in the US and one in Germany.
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