Development of 13.56 MHz capacitive wireless power transfer coupler for charging system

Mohamad Rashidan, Muhamad Faris Muqr (2022) Development of 13.56 MHz capacitive wireless power transfer coupler for charging system. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This paper presents to investigate coupler structure for 13.56 MHz capacitive wireless power transfer (CWPT). This charging pad consists of a pair of power-transfer coupling plates, a metal sheet at the base that reduces the impact of nearby dissipative materials, and a dielectric layer in between. The impact of these structural components' dimensions on the system's performance is investigated, and trade offs between various options are examined. The design is supported by theoretical analysis and simulations, and a prototype 13.56-MHz 12- cm air-gap 500-W capacitive WPT system that uses these charging pads for power transfer has been experimentally tested. Fabrication process for PCB board will be conducted with the required components for the design process. The value of each components are estimated with solving equation part according to the requirement of the simulation circuit. Implementation in using software LT spice as common software in this project to get the output graph as expected results. The simulation circuit for the data components are defined from measured values with the Nano VNA. Experimental setup that involves voltage input sine wave at 13.56 MHz to test the functionality to transfer voltage from input to output.

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