Abstract
This research aims to make buck converter prototype for PLTS system by using fuzzy logic controller. Buck converter is required in the PLTS system if the required unidirectional voltage is smaller than the output voltage of the solar cell. Buck converter used to convert 24 Volt dc voltage to 12 Volt dc with 60 watt capability. While fuzzy logic controller is used to improve buck converter performance based on pulse generation technique for switching. The application of fuzzy logic method is expected to improve the performance of the system by maintaining the stability of buck converter output voltage of 12 volts and reduce the output ripple value. Atmega8535 microcontroller is used to generate PWM pulses for switching on power circuits. The results obtained from the test using a 100 Ohm 5 Watt load obtained the buck converter output voltage of 12.4 Volt.
Highlights
The solar cell is a semiconductor diode that can convert light into electricity and is a major component in a Solar Power System (PLTS)
Electrical energy generated by the PLTS in the form of direct current while the load used by consumers can be alternating and direct current
If the required directional voltage is greater than the output voltage of the solar cell used dc-dc converter type step up or known as a boost converter. if the unidirectional voltage required is smaller than the output voltage of the solar cell used dc converter type step down or known as buck
Summary
The solar cell is a semiconductor diode that can convert light into electricity and is a major component in a Solar Power System (PLTS). Electrical energy generated by the PLTS in the form of direct current while the load used by consumers can be alternating and direct current. To convert electrical energy from direct current to alternating current an inverter is used, whereas for converting direct current to another level of current is used dc-dc converter. If the required directional voltage is greater than the output voltage of the solar cell used dc-dc converter type step up or known as a boost converter. If the unidirectional voltage required is smaller than the output voltage of the solar cell used dc converter type step down or known as buck. Configuration buck on PLTS system can be used for charging battery system which later can be used as source of inverter to convert to voltage back and forth. In PLTS systems, some of the most important dynamic performance criteria to consider are the ripple, the output voltage, and the recovery time
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