WIRELESS POWER TRANSMISSION THROUGH MAGNETIC RESONANCE COUPLING
Abstract
This work contains the formulation and implementation of the concept of transmission of electoral power wirelessly by using the principal of resonant coupling. In order to implement the idea of transmission of electrical power wirelessly, a power transmitter circuit on the sending side and a power receiver circuit on the receiving side has been designed. We used self-resonating Royer oscillator in the power transmitter circuit on the sending side. Both the power transmitter and power receiver circuits has been designed to operate at a similar frequency to accomplish the phenomenon of resonance on both sides. The common operating frequency is 1.2 MHz on both power transmitting and power receiving sides. Rectification and filtration circuits were also included in the power receiving circuitry to operate electrical appliances on the receiving side. Primarily, we charged the batteries of cell phone and emergency light of low wattage using this wirelessly transmitted received power. As our designed circuitry was of medium range, thus it worked efficiently within a range of 01 meter. The process of Wireless power transmission was not affected even when we placed a thick and opaque obstacle between the wireless power transmitter and wireless power receiver.
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