Wireless Charging for Electric Cars!


Published Date : Sep 05, 2017

One of the reasons why electric cars are not as much in demand, despite their eco friendly nature is their range. To commute above 200 miles, electric cars need recharge, making long distance a challenge. To get around this problem, scientists from Stanford University have made a significant step. Electricity will be transferred wirelessly to a moving car. This solves the problem of limited range and allows vehicles to travel potentially to cover any distance. Their idea is that a coil on the bottom of the car can receive electricity from coils connected to an electric current, which will be embedded in the road.

While at present, this team of expert scientists is able to transfer enough electricity wirelessly to power a 1-milliwatt LED bulb, the amount of electricity required by a car will obviously be way too high. Therefore, the next step of the scientists from Stanford University is to increase the amount of electricity. There are a number of challenges for achieving continuous flow of electricity. Either the transmitting and receiving coils should be stationary or they need to be tuned automatically. The team of scientists solved this issue by making use of a voltage amplifier and a feedback resistor for replacing a radio frequency source in the transmitter. This resulted in the power being able to be transferred to a range of 3 feet without the need of circuits being tuned continuously or remaining stationary. This new development may soon result in charging all our devices wirelessly, apart from electric cars.