Wireless Energy Transfer

Mohd Nasuha, Mohamad Zin (2011) Wireless Energy Transfer. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The purpose of this project is to build the prototype model to prove and demonstrate the concept of wireless energy transfer based on magnetic resonance. It consists of a transmitter as an electromagnetic resonator and a receiver to which the device to be powered is attached. The transmitter emits a non-radioactive magnetic field resonating at MHz frequencies, and the receiving unit resonates in that field. The resonant nature of the process ensures a strong interaction between the sending and receiving unit, while interaction with rest of the environment is weak. This project will analyzed the wireless transmission mechanism based on the coupling model of two inductor, and studied the relationship among efficiency,frequency, distance and coil sizes.The maximum efficiency that we succeed to transfer energy is about 30% with the size of coil diameter is 9.5 cm.So, based on resonances theory, we had provided an energy wirelessly to light on a 3V LED within the distance for 6 cm which uses magnetic field as transmission medium.

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