WIRELESS POWER TRANSMISSION BY INDUCTIVE COUPLING
Keywords:Inductive coupling, Residual magnetic field, Resonance, Tesla Theory, Wireless Power Transmission
Wireless Power transmission is the transfer of electrical power from a power source to an electrical load without using discrete manmade conductors. The reason for going to wireless power transfer system is to provide reliable power transmission at low cost and to make life more comfortable. This wireless power transmission system is completely eco-friendly and efficient. Just imagine the future with wireless power where in there will be no need of power cables and no need to plug in the electrical devices to the electric sockets for charging which brings a profound change in the society. The core technology used in the wireless power transmission system is Inductive coupling through magnetic fields. An Impedance compensating circuit is also used to achieve maximum power transfer. The core technology is similar to those found in transformers, except primary and secondary windings are physically separated and tuned to resonate for increasing their magnetic coupling. These magnetic field generated by the primary coil is arranged to interact vigorously with matched secondary windings where the load is connected.
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