Resonant Inductive Coupling for Wireless Power Transmission
Puteri Athira1, Tze-Zhang Ang1* and Mohamed Salem1
1School of Electrical and Electronic Engineering, Universiti Sains Malaysia (USM), Nibong Tebal, 14300, Penang, Malaysia;*Correspondence: email@example.com;
Received: 10/1/2022, First revision: 1/2/2022, Accepted: 5/2/2022, Published: 8/2/2022
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Wireless power transmission (WPT) is the method that transferring electrical energy from power source to electrical without any physical contact and it can be used to transfer power to electricity dependent systems or devices. In WPT, electromagnetic energy is produced to transmit the energy from power source (transmitter) to the load (receiver) via resonant inductive coupling. This article focuses on the design of a resonant inductive coupling using parallel-T topology in coupling WTR and combined of single transmitter with multiple receivers. In addition, principle of magnetic wave between the transmitter and receiver with related parameters is utilized to develop in WPT. A parallel-T topology that consists of T-matching network for secondary side is proposed as it is more suitable for weak coupling wireless power transfer applications. Besides that, three circuits are designed to show the resonant inductive coupling for WTP which including the circuit with and without matching network and the circuit of single transmitter with multiple receivers. The simulation of output voltage and output current are observed to relate the effects of frequency on the circuit. The graph of output voltage and power are plotted to show the pattern on effect of the frequencies to the resonant inductive coupling circuit.
Wireless power transmission (WPT) is the transfer of electric energy from a power source to an electric load without a direct physical connection between them where it is usually via an electromagnetic field [1, 2]. In a WPT system, the primary coil and secondary coil are loosely coupled . It can be applied to a wide variety of applications and environments. An example of block diagram for WPT is shown in Figure 1.
In the 1890’s, a WPT system has been demonstrated by Nikola Tesla who has attempted the first experiment about WPT and also shows a demonstration on Tesla coil which is the resonant transformer that transfers the electrical energy from primary coil to secondary coil with resonant induction . In 20th century, a system for transferring large amounts of power across continental distances in a bid to bypass the electrical-wire grid has been developed by Nikola Tesla . Not only that, this author was able to make a successful in the field of wireless power transfer including illuminating light bulbs with a distance about 30 meters (m) .
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