As the technology presents itself to be advanced in wireless power and charging technology, one can be sure that it utilises time-varying electric, magnetic or electromagnetic fields which can help in transmitting power. Today we see that radiative power can shoot beams power over long distances with the help of electromagnetic radiation. Here are some electromagnetic charging technologies which can easily bring the power.
WiTricity is a wireless charging technology which is based in the coupled electromagnetic resonant objects which can transmit power. It was introduced by a Boston Based startup which consists of transmitters are receivers which has a magnetic loop with antennas which can be used to charge multiple devices at the same time. The primary focus of this is to make sure that the outfitting electricity vehicles which can work for automakers which includes Toyota and Nissan.
Energous Wattup is a wireless charging technology which allows the user to charge their smartphones and tablets which is inside the vicinity. This Wattup functions similar to the WiTricity by using electromagnetic resonance. WattUp differs from the WiTricity as it utilises Bluetooth to search for devices that are authorised via an app. If there is a direct RF signal, the Bluetooth equipped device can convert energy and charge.
uBeam is another developing technology which does not use the traditional methods rather relies on pure ultrasound to help transmit power. This platform works by high-frequency emitting sound in the range of 45 to 75 kHz range which is inaudible to animals or humans. It uses a Phased array antenna to direct the sound like a microphone which works as a receiver and request power and later converts energy into DC and allows the device to charge.
Qi Wireless Power
Qi Standard has been incorporated, which can easily charge more than 14o mobile devices at the same time. This wireless power transfer uses inductive charging. The system itself relies on a charging pad and compatible devices which can easily be charged via a resonant inductive system which is coupled between the pair of planar coils.
Elix Wireless has been developing high-capacity charges ranging from 1000 to 20000 Watt allowing for any wireless charging applications. This platform works on the magneto-dynamic coupling, which uses the rotating magnets in the transmitter and receiver with an air gap. The rotation of the magnet in the transmitting unit causes the magnet in the receiver to rotate, which allows for an effective power transfer that can produce heat. This platform is one which only works on shorter ranges, and they are trying to improve the power transfer efficiencies and rates.