Wireless charging of electric vehicles is expected to become a reality

A few days ago, researchers from North Carolina State University said that they have developed new processes and technologies to upgrade the wireless power transmission power from stationary to mobile reception. The researchers said that their goal is to build a highway mobile charging station to charge electric vehicles through wireless power transmission. “We have made changes to the receiver and transmitter to make wireless energy transmission safer and more efficient.” Srjan, assistant professor of electrical engineering at North Carolina State University. Dr. Lukic said. Wireless power transmission is based on magnetic coupling and is now more and more widely accepted. This method can transmit power over small and medium distances. According to North Carolina State University, wireless power transmission systems are expected to charge electric vehicles, as well as electronic devices and other technical equipment. When the wireless power transmission system is running, it emits electromagnetic waves of a specific frequency from the transmitter to the receiver. These electromagnetic waves interact with the receiving coil to generate electric current. Adjust the coil so that its resonance frequency matches the frequency of electromagnetic waves, then the current it generates will be amplified.

Currently, North Carolina State University researchers have developed a series of segmented transmitting coils, each of which corresponds to an electromagnetic field. The researchers also created a receiver coil and modified the receiver. Each transmitter coil is the same size and can be placed in a car or other mobile platform. The researchers pointed out that the size of the coil is very important, because the energy transfer of the coil of the same size is more efficient. Lukic and his team have developed a small but powerful system and are currently improving the transmission efficiency of the system. Currently at the highest efficiency, the new system can transmit energy at a rate of 0.5 kilowatts. “Our goal is to move from 0.5 kilowatts to 50 kilowatts, which will make it more practical.” Lukic said.

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