Researchers may have paved the way for autonomous vehicles that drive around the clock. 🤓
, could revolutionize EV infrastructures by enabling electric vehicles and autonomous factory machines to charge while driving.The concept of wireless charging dates back to the 1890s when Nikola Tesla bedazzled audiences by using alternating electric fields to light up unplugged fluorescent lamps. Since then, the concept has shown promise for charging vehicles wirelessly — Sweden is currently alternating magnetic fields generated using existing electric currents along a road.
At the end of Afridi's sophomore year at the California Institute of Technology, he worked with NASA's Jet Propulsion Laboratory as part of the team designing the 8 and 32-GHz transmitter of the SURFSAT 1 satellite in 1995 — a precursor to the space agency's groundbreakingLater at MIT, Afridi switched to studying power electronics, which operate at much lower frequencies while handling higher power levels.
These plates create oscillating electric fields that attract and repel charges in metal plates attached to the underside of the moving vehicles. A high-frequency current is then driven, and rectified, through a circuit on the vehicle, where it charges the vehicle's battery. As electric fields generated by readily accessible voltages are weak, Afridi and his team boosted the voltage for their system and operated it at very high frequencies to achieve higher power transfer.
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