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Later Evatran also began development of Plugless Power, an inductive charging system it claims is the world's first hands-free, plugless, proximity charging system for Electric Vehicles. [72] With the participation of the local municipality and several businesses, field trials were begun in March 2010.
Inductive charging pad for a smartphone as an example of near-field wireless transfer. When the phone is set on the pad, a coil in the pad creates a magnetic field [1] which induces a current in another coil, in the phone, charging its battery. Generic block diagram of a wireless power system
The system works along similar principles as inductive charging, but uses the resonant inductive coupling concept with a demonstrated efficiency of around 85%. This makes it similar to wired chargers, where the higher theoretical efficiency is offset somewhat by necessary isolation systems that prevent high-current back-feeding, systems that ...
Wireless charging is making some serious headway in public mindshare. Once confined to toothbrushes and other simple household items, it's now a handy means of powering phones (HP's Touchstone ...
Qi (/ tʃ iː / CHEE) is an open standard for inductive charging developed by the Wireless Power Consortium.It allows compatible devices, such as smartphones, to receive power when placed on a Qi charger, which can be effective over distances up to 4 cm (1.6 in). [1]
By determining the optimal charging current for each stage, the fuzzy controller is used to determine the charging current by the change in temperature. To sum up, this algorithm is based on a micro-controller or a computer. [6] The charging speed is faster and charging efficiency is higher than those of the CC/CV.
While the early systems used a resonant receiver coil, later systems [16] implemented resonant transmitter coils as well. These medical devices are designed for high efficiency using low power electronics while efficiently accommodating some misalignment and dynamic twisting of the coils.
Power can be transferred at up to 98 percent efficiency. [4] eCoupled is designed to provide wireless power transfer for products ranging from low-power devices such as cell phones and media players [5] to laptop computers [6] and power tools. [7] Fulton Innovation has over 220 patents filed and pending on the eCoupled system. [8]