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All Journal International Journal of Electrical and Computer Engineering Bulletin of Electrical Engineering and Informatics
Nor Diyana Md Sin
Universiti Teknologi Mara
Computer Science & IT Electrical & Electronics Engineering

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The design of an efficient class E-LCCL capacitive power transfer system through frequency tuning method Khairul Kamarudin Hasan; Shakir Saat; Yusmarnita Yusop; Huzaimah Husin; Nor Diyana Md Sin
International Journal of Electrical and Computer Engineering (IJECE) Vol 11, No 2: April 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v11i2.pp1095-1104

Abstract

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.
Integration of LED-based lighting in academic buildings for energy efficiency considerations Mohamad Zhafran Hussin; Saiful Firdaus Abdul Shukor; Nor Diyana Md Sin; Yusrina Yusof; Muhammad Zairil Muhammad Nor; Noor Hasliza Abdul Rahman
Bulletin of Electrical Engineering and Informatics Vol 10, No 1: February 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v10i1.2513

Abstract

This paper presents an assessment by integration of LED T8 tube lamps in academic buildings for energy efficiency considerations. The proposed project was implemented in conjunction with a national mission, national energy efficiency action plan (NEEAP) for 10-year implementation period of 2016-2025 in reducing allocation on subsidies for efficient expenditure towards energy-saving measures. A case of study in a real environment at one of the UiTM’s buildings as a target task area has been tested by replacing a LED lighting technology in consideration of current operating costs and power factor performances. From the results, LED T8 tubes have shown a better power factor of 0.89 compared to fluorescent lamps with about 0.61 and primarily driven by economic benefits in terms of cost savings of up to 50% with return-on-investment (ROI) 6 months after installation. By integrating this technology, nearly 50% of the total energy consumption in indoor lighting system could be significantly saved, thus reducing the total cost of electricity bills in the future within the target area.
Co-Authors Huzaimah Husin Khairul Kamarudin Hasan Mohamad Zhafran Hussin Muhammad Zairil Muhammad Nor Noor Hasliza Abdul Rahman Saiful Firdaus Abdul Shukor Shakir Saat Yusmarnita Yusop Yusrina Yusof