Analysis and Design Capacitive Power Transfer (CPT) System for Low Application Using Class-E LCCL Inverter by Investigate Distance between Plates Capacitive.

Abstract

This study presents the analysis and design of a Capacitive Power Transfer (CPT) system for low power application using a Class-E LCCL inverter based on varying the distance between capacitance plates. The Class-E LCCL inverter can produce a high-frequency alternate current and reduce the size of the capacitance plate to minimise power losses during energy transfer besides yielding low switching losses. In specific, the performance of the LCCL CPT system at 1 MHz operating frequency and 24 V DC supply voltage was analysed via simulation and experimental works. Finally, a prototype of the CPT system was successfully designed, producing 10 W output power through a capacitive plate size of 0.0327 m2 and a 0.1 cm air gap at 96.68% efficiency. Based on the performance of the LCCL CPT System design, an efficiency analysis of the LCCL CPT System was performed; the capacitance plate distance was varied from 1 cm to 20 cm and produced a change in total impedance calculation from 57.69+j198.42 Ohm to-2.05j Ohm. Meanwhile, efficiency decreased from 96.68% to 1.25% but power was still transmitted in that range. These findings could be beneficial for hazardous electrical environments, portable applications, consumer electronics, and medical implants.