Developing Wireless Power Transfer Circuit based on Inductive Coupling

Suparto Supriyadi


 Electrical energy is one of the most important basic needs in human life today. Commercial power transmission using low voltage (220 volt) still use the power cable to conduct electricity to the load. One way of sending or transferring electrical power that continues to be developed to date is the wireless power transfer. Electrical power transfer wirelessly has advantages over using cable that can increase comfort in the use of electrical equipment. In this research developed wireless power transfer circuit using inductive coupling. The experiment is done by changing the number of turns and the diameter of the wire aimed at finding the most maximum power and the farthest distance. The power source is connected to a series of electronics equipped with copper which has been formed as the primary coil for the transmitter and the secondary coil for the receiver which then distributes its electrical energy to the load. In a circuit with wire of 0.5 mm diameter, the number of turns 26X, and the frequency used 470KHz obtained the power efficiency transferred at a distance of 1 cm about 1.51%. The result of the experiment can turn on 1 Watt LED.


wireless power transfer, inductive coupling, transmitter circuit, receiver circuit


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