The design of an efficient class E-LCCL capacitive power transfer system through frequency tuning method

Khairul Kamarudin Hasan (Universiti Teknologi Mara)
Shakir Saat (Universiti Teknikal Malaysia)
Yusmarnita Yusop (Universiti Teknikal Malaysia)
Huzaimah Husin (Universiti Teknikal Malaysia)
Nor Diyana Md Sin (Universiti Teknologi Mara)

International Journal of Electrical and Computer Engineering
Vol 11, No 2: April 2021

In this work, the optimum zero voltage switching (ZVS) of Class E-LCCL capacitive power transfer (CPT) was determined via frequency tuning method. Through this an efficient system can be guanranteed although there is a change in the capacitive plates distance. This study used a Class-E LCCL inverter, as it can operate at a high alternate current frequency, besides producing low switching losses and minimal power losses. Specifically, this study conducted simulations and experiments to analyse the performance of an LCCL CPT System at 1 MHz operating frequency and 24 V DC supply voltage. Using an air gap distance of 0.1 cm, the designed CPT system prototype successfully achieved an output power of 10W and an efficiency of 95.45%. This study also found that by tuning the resonant frequency of the Class E-LCCL system, the optimum ZVS can be obtained although capacitive plate distance was varied from 1-3 cm via experimental. The results of this study could benefit medical implant and portable device development, consumer electronics, and environments that involve electrical hazards.