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The technology of wireless power transmission can eliminate the use of the wires and batteries, thereby increasing the mobility, convenience, and safety of an electronic device for all users. [2] Wireless power transfer is useful to power electrical devices where interconnecting wires are inconvenient, hazardous, or are not possible.
The Alliance For Wireless Power is an industry standard group that uses the principles of magnetic resonance to develop a wireless energy transfer system over distance. The WiPower system uses directed and controlled magnetic fields to replace traditional power cords. [1]
Inductive charging is not considered a mature dynamic charging technology as it delivers the least power of the three electric road technologies, its receivers lose 20%-25% of the supplied power when installed on trucks, and its health effects have yet to be documented, according to a French government working group on electric roads. [37]
The principles of electromagnetic induction are applied in many devices and systems, including: ... Wireless energy transfer; ... High current power-frequency devices ...
This technology survived into the 21st century in a handful of oilfields in the US, transmitting power from a central pumping engine to the numerous pump-jacks in the oil field. [ 3 ] Mechanical power may be transmitted directly using a solid structure such as a driveshaft ; transmission gears can adjust the amount of torque or force vs. speed ...
An power converter with semiconductor valve devices. [ab] semiconductor switch An electronic power switch with semiconductor valve devices. [ac] semiconductor valve device An electronic valve device which is a semiconductor device. sequential phase control Asymmetrical phase control such that the delay angles are determined according to a given ...
The first three-phase alternating current power transmission at 110 kV took place in 1907 between Croton and Grand Rapids, Michigan. Voltages of 100 kV and more were not established technology until around 5 years later, with for example the first 110 kV line in Europe between Lauchhammer and Riesa, Germany, in 1912.
A steam turbine used to provide electric power. An electric power system is a network of electrical components deployed to supply, transfer, and use electric power. An example of a power system is the electrical grid that provides power to homes and industries within an extended area.