General Analysis on the Use of Tesla's Resonators in Domino Forms for Wireless Power Transfer (original) (raw)

IEEE Transactions on Industrial Electronics, 2013

Abstract

ABSTRACT In this paper, we present a brief overview of historical developments of wireless power and an analysis on the use of Teslas resonators in domino forms for wireless power transfer. Relay resonators are spaced between the transmitter coil and the receiver coil with the objectives of maximizing energy efficiency and increasing the overall transmission distance between the power source and the load. Analytical expressions for the optimal load and maximum efficiency at resonance frequency are derived. These equations are verified with practical measurements obtained from both coaxial and non-coaxial domino-resonator systems. To avoid the use of high operating frequency for wireless power transfer in previous related research, the technique presented here can be used at sub-Mega-Hertz operation so as to minimize the power loss in both the power supply and the output stage. We demonstrated both theoretically and practically that unequal-spacing for the coaxial straight domino systems has better efficiency performance than equal-spacing method. Also, the flexibility of using resonators in various domino forms is demonstrated.

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