Fuzzy Logic-Based Voltage Controlling Mini Solar Electric Power Plant as an Electrical Energy Reserve for Notebook

This project aims to develop and to test a prototype of mini Solar Electric Power Plant (mini SEPP) for a notebook battery charging with constant output voltage froma fluctuated input voltage. The mini SEPP consist of solar cells, boost converter, and ATmega128 microcontroller. Fuzzy logic as control method is used to control output voltage of mini SEPP. In this research, error tolerance of mini SEPP output voltage is 5% of set voltage. Testing of mini SEPP has done in three conditions: cloudy weather, sunny with cloud weather, and sunny weather. Result of the test had shown that mini SEPP worked in sunny weather properly but it didn’t work properly in cloudy weather and sunny weather with cloud because output power of solar cells was not at maximum point but the mini SEPP still charged notebook battery.