Wireless power transfer based on capacitive approach for low power application

Mohamed As’hari, Mohamed Norlutfi (2020) Wireless power transfer based on capacitive approach for low power application. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

A CPT system is one of the near-field technologies of WPT system where it capable to transmit signal within short range and high efficiency. The CPT system was chosen due to the benefits such as simple topology, fewer components that could assist with better performance and robustness to EMI around metallic materials, and easy to build. A Class D inverter has been analysed towards ZVS condition, input power and output power based from two difference impedance approaches that are capable to perform the conversion from DC to AC efficiently. Next, by developing the simulation of this CPT system using MATLAB software, ranges of load and distance variation are used to analyse the performance of efficiency by observing the ZVS condition and power output based from obtained waveform. This project is expected to deliver a 10Watt output power with the frequency operating of 1MHz that suits with any electronic devices with low power rate consumption and efficiency rate 85% above. Eventually, the CLL impedance seems to be the compatible impedance network for Class D inverter while maintaining a better efficiency rate compared to LCCL impedance. In future, it is much recommended to study and develop the Class D inverter with various of impedance network to analyse the performances.

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