If the electric vehicle can charge while driving on the highway, you can do not have to worry about the problem of endurance, and it also helps to reduce costs, and even make electricity become the fuel standard of the vehicle.
Researchers at Stanford University, developed a way to provide wireless power supply without any adjustment, which can provide wireless power supply.
Robust Wireless Power Transfer Using A Nonlinear Power Transfer Using A Nonlinear Power Transfer Using A Nonlinear Power Transfer Using A NONLINEAR POTYTRIC Symmetric Circuit, one article, researchers show the use of Yu called time symmetrical binding nonlinear gain saturated elements, achieving robust and reliable power transmission.
Traditionally, when the transmission distance or relative direction of the source or receiving unit changes, it is only possible to maintain high efficiency through the frequency or internal coupling parameters of the constant hit coil. However, this way to develop from Stanford University has no need to make any adjustments, which can still maintain almost consistent transmission efficiency under approximately 1 metric distance.
In order to achieve this, the researchers remove the source of radio frequency (RF) in the transmitter, and replaced with a voltage amplifier and feedback resistance, which automatically calculates the correct frequency of different distances without the need for human intervention and adjustment.
In order to test this approach, the researchers placed the LED bulbs on the receiving coil. Under the conventional setting of the tuning, the brightness of the LED is reduced as the distance, but under a new setting, the brightness remains constant as the receiver is removed from the source of about 3 ft. According to the research report of Stanford University, the research team has recently filed a patent application for its solutions, which expects to improve the overall efficiency of cog amplifiers with efficiency more than 90%. Under the phase, the current universal amplifier currently used for display is less than 10%. However, current demonstrations only involve 1MW of charging power, researchers hope to increase the performance of the system, so that they can eventually become alternatives to the car, providing built-in infrastructure (embedding the charge coil below the road).
"We still need to significantly increase the transmission to electric vehicles (EV) charge, but may not have to focus on further movement distance," said Professor of Electronic Engineering Shanhui Fan.
One possible embodiment is that a car traveling on the highway will directly receive and store electricity from a coil (connected to current) burying in the road.
As with the film, the coil at the bottom of the vehicle can receive power from the current coil connected to the embedded road, which will allow the moving vehicle to charge while traveling along the highway, thereby providing infinitely Driving.
Such wireless charging solutions will help solve the main disadvantages of the plug-in electric vehicle, limited travel range and long-term charging. Ideally, wireless charging vehicles can rely on road infrastructure with energy acquisition capabilities. In addition, this study may also apply to many wireless devices, including wearable and implantable electronic devices.
Original link: https://www.eeboard.com/news/stanford/
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