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All Journal Bulletin of Electrical Engineering and Informatics
Yonis M. Yonis Buswig
Universiti Malaysia Sarawak
Electrical & Electronics Engineering

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A battery integrated multiple input DC-DC boost converter Azuka Affam; Yonis M. Yonis Buswig; Al-Khalid Hj Othman; Norhuzaimin Julai; Hani Albalawi
Bulletin of Electrical Engineering and Informatics Vol 12, No 2: April 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v12i2.4272

Abstract

In this paper, the proposed single boost converter aims to harness more than one renewable energy (RE) input source and achieve a high voltage gain. The interleaved technique combined with voltage multiplier (VM) cells, reduced inductor current and attained high voltage transfer ratio. The boost converter possesses two unidirectional input ports and a bidirectional input port that is connected to a battery storage. The duty ratios of the power and interleaving switches are used to regulate the output voltage of the proposed converter. Three operation modes are identified, and steady state analyses of the converter are presented and discussed. The converter can store excess energy in the battery during periods of abundance and deliver power to the loads when the RE sources are low or unavailable. In addition, the output voltage is higher than that of the conventional boost converter. The converter delivered 278 V from 12 V and 24 V dual input sources. The converter operation is simulated and verified using MATLAB/Simulink.
Dual axis solar tracker and monitoring system based on internet of things Yonis M. Yonis Buswig; Shanti Faridah Salleh; Al-Khalid Othman; Norhuzaimin Julai; Azuka Affam; Lennevey Kinidi; Hazrul Mohamed Basri; Kasumawati Lias
Bulletin of Electrical Engineering and Informatics Vol 15, No 1: February 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v15i1.9698

Abstract

In this paper, the application of internet of things (IoT) technology in development of a dual-axis solar tracking system is presented. Sting capacity of piezoelectric material is applied a footstep energy generation system. Using Arduino MEGA as the main controller for the system, light-dependent resistors (LDRs) have been used for sunlight detection and maximum light intensity. Two servo motors have been employed to rotate the solar panel towards the position of the sun as detected by the LDR. Ethernet Shield is used as an intermediary between the hardware device and the IoT monitoring system through the Cayenne platform. Alert notifications are included to inform a remote user through phone or mail (or both) when a sensor has reached a certain predefined event. There is a 21.97 increased energy output buy the proposed system as compared to the single-axis solar tracker. Further test results of the manufactured prototype indicate that solar tracker data can be transmitted simply and monitored directly online, and the solar tracker is capable of receiving commands from the IoT monitoring application.
Co-Authors Al-Khalid Hj Othman Al-Khalid Othman Azuka Affam Hani Albalawi Hazrul Mohamed Basri Kasumawati Lias Lennevey Kinidi Norhuzaimin Julai Shanti Faridah Salleh