Buck Converter Design for Reducing 18-Volt-Direct Voltage for a 12 Volt Battery Charging
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Abstract
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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Articles published in Journal of Industrial Technology Ubon Ratchathani Rajabhat University both hard copy and electronically are belonged to the Journal.
References
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