Buck Converter Design for Reducing 18-Volt-Direct Voltage for a 12 Volt Battery Charging

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แววประดิษฐ์ นันทะลาด นิกร เห็นงาม


     The purpose of the study was to design a buck converter that could reduce 18 VDC of input voltage from solar cell to be output voltage 12 VDC dropped to battery. First, the buck converter was changed to 50, 75, and 100 kilohertz for switching signals and simulating. From previous process, this was for studying the variation of output voltage. From changing above, defining that was designed by simulating set the frequency on 100 kilohertz for switching signals on and off time is suitable. It showed that output voltage related to the need of designing a buck converter. In case of the low frequency switch, the ripple was higher than using the high frequency switch. From designing the buck converter and prototyping the electric circuit, the 32 microhenry inductors, the 57.87 microfarad capacitors, the 1.44 ohm resisters, and frequency switch of 100 kilohertz were used in the circuit with the 18 VDC input. It revealed the 12 VDC and the output ripple which was changed 0.1 %. The result showed that the model simulation and prototyping were related to the need of designing a buck converter...………………….……………………….


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นันทะลาดแ., & เห็นงามน. (2019). Buck Converter Design for Reducing 18-Volt-Direct Voltage for a 12 Volt Battery Charging. Journal of Industrial Technology Ubon Ratchathani Rajabhat University, 9(2), 61-72. Retrieved from https://www.tci-thaijo.org/index.php/jitubru/article/view/214934
Research Article


[1] Manmit T, Damrongkulkamjorn P. Optimal Battery Storage System for PV Grid Connect for Custormer with Time-of-Use Tariff. ERI Journal. 2015; 12(2): 75-94. (in Thai)
[2] Chunden J. Photovoltaic Powered Battery Charger Based on Buck Converter with Digital MPPT Control [Master of Science in Industrial Education]. Bangkok; King Mongkut’s University of Technology Thonburi; 2011. (in Thai)
[3] Nawong M. Maximum Power Point Tracking Control of Battery Circuit for Photovoltaic Modules based on Current Control Combination with Constant Voltage Control. UBU Engineering Journal. 2015; 8(2): 87-96. (In Thai)
[4] Treephhak K, Janin S, Ganiga S, Chaiwong A, Jiewjarean P. Buck Converter for Charging Batteries with Photovoltaic. In Muneesawang P, editors. The 12th Naresuan Research; 2016 July 21-22; Naresuan University; 2016. p. 531-543. (in Thai)
[5] Christri AW, Iskandar RF. Analysis and Design of Dynamic Buck Converter with Change in Value of Load Impedance. Procedia Engineering. 2017 Jan 1; 170: 398–403.
[6] Mouhadjer S, Chermitti A, Necaibia A. Comprehensive and field study to design a buck converter for photovoltaic systems. Revue des Energies Renouvebles. 2012; 15(2): 321–30.
[7] Nugroho A, Rijanto E, Rozaqi L. Buck Converter Control for Lead Acid Battery Charger using Peak Current Mode. International Journal of Power Electronics and Drive Systems (IJPEDS). 2017 Jun 1; 8(2): 686–94.