DESIGN OF MICRO-INVERTER BOOST BASED ON MODIFIED CUK CELL

• Main Author: Alexzander, Martin
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/74089
• Institution: Institut Teknologi Bandung

Indonesia is the largest archipelago country in the world, consisting of numerous remote islands. To meet the electricity needs in these remote islands, a small-scale generation system is required, such as a photovoltaic power system (PLTS). The electricity generated by PLTS is in direct current (DC), and a micro-inverter is needed to convert it into alternating current (AC) for utilization by loads. In this research, a micro-inverter is designed using a non- isolated multi-stage topology, employing a boost converter as the first stage to step up the voltage level. The output of the boost converter is then fed into the inverter stage to produce a sinusoidal waveform that complies with the standards. The inverter is designed using two modified cuk converters. The modification in the cuk converters involves changing the load position to achieve higher gain compared to conventional cuk converters. The micro-inverter is tested using two types of sources: solar panels and an AC voltage source separated by a rectifier block. The test results indicate that the inverter can produce output voltage according to SPLN standards, with dimensions of 21.7 cm x 16.2 cm x 7 cm and a power density of 121.91 W/L.