Design of Buck-Boost Converter as A Voltage Stabilizer on Solar Power Plant at PPNS Baruna 01 Crewboat

Abstract

Electrical energy is one of the most important basic human needs and is used in everyday life in various activities. Over time, the need for electricity will increase due to the increase and development of both the population, the amount of in-vestment and technological developments. The use of coal as the main fuel for power plants is also running low and its existence is not renewable. One solution to deal with these problems is the utilization of renewable energy. One type of re-newable energy that is environmentally friendly in order to meet the needs of electrical energy is solar energy. The existence of solar energy which is very abundant is one solution to reducing fossil fuels, which are currently running low. In PPNS Baruna 01 Crewboat the DC power source used comes from Solar Panels with a total of two pieces and each power is 300WP. As we know solar energy is fluctuating (up and down), therefore a DC-DC converter is needed so that the resulting voltage is stable. The DC-DC converter used in this research is a buck-boost converter. This buck-boost converter is designed with a set point of 14.4V which is then used for battery charging. The components used are 22.5μH inductor, 2275μF capacitor, resistor, diode and mosfet. The simulation results of the buck-boost converter in PSIM software show that the converter is able to work in two modes with an output voltage in accordance with the set point. When buck mode the input voltage is 24V to 14.4V and when boost mode the input voltage is 12V to 14.4V. From the simulation results, the buck-boost converter can be realized on the PLTS in the PPNS Baruna 01 Crewboat.