Development Of A DC To DC Buck Converter For Photovoltaic Application Utilizing Peripheral Interface Controller

Abd Ghani, Zamre and Kamit, Kamarudin and Zeain, Mohammed Yousif and Zakaria, Zahriladha and Azidin, Farid Arafat and Ab Hadi, Nik Azran and Mohd Isira, Ahmad Sadhiqin and Othman, Hidayatulfathi and Lago, Herwansyah (2019) Development Of A DC To DC Buck Converter For Photovoltaic Application Utilizing Peripheral Interface Controller. ARPN Journal Of Engineering And Applied Sciences, 14 (7). pp. 1317-1324. ISSN 1819-6608

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Nowadays, renewable energy has become one of the important energy resources in our daily lives. One of the important and promising renewable energy resource today is the photovoltaic (PV). However, weather changes contribute to the PV output power fluctuations. Thus, for a PV-related system, a closed-loop control system is necessary for ensuring the system produces a regulated dc output voltage. This paper presents the development of PIC16F877A microcontroller-based dc to dc buck converter. This converter steps down a dc voltage source to a specific voltage which suitable for other specific applications. For the PV output voltage fluctuating from 18V to 12V, the microcontroller generates a pulse-width modulation (PWM) signal accordingly to control the converter switching device MOSFET IRF540, thus regulating the converter output voltage to 12V. The system simulation was carried out in the PROTEUS ISIS Professional software tool. Due to the unavailability of the PV device in this simulation software, a dc voltage source is utilized. This voltage source is varied to emulate the PV output variations. The simulation results show that the controller managed to step-down the voltage source and regulated at 11.98Vdc. The prototype was built and tested in a laboratory for validation. Due to the constrains and limitations of the PV module, an adjustable power supply was used to provide variation of input voltage levels for the buck converter. The experiment results also show that the output voltage is managed to be regulated at 12V. The results signify the efficacy of developed converter control system algorithm.

Item Type: Article
Uncontrolled Keywords: Renewable energy, Photovoltaic (PV), DC to DC, Buck converter, Pulse width modulation (PWM), PIC16F877A microcontroller.
Subjects: T Technology > T Technology (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Electronics and Computer Engineering > Department of Industrial Electronics
Depositing User: Mohd Hannif Jamaludin
Date Deposited: 11 Jun 2020 16:38
Last Modified: 11 Jun 2020 16:38
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