PERFORMANCE ANALYSIS OF MODIFIED CUK DC-DC CONVERTER

• Main Author: Aji Kuncoro Prihambodo, Muh.
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/39720
• Institution: Institut Teknologi Bandung

As human energy needs continue to grow, the availability of non-renewable energy sources such as fossil fuels is depleting. Currently developing renewable energy sources technology to replace the role of fossil fuels as electricity producers, one of which is photovoltaic (PV). In addition, there is also developing microgrid DC technology as a replacement for the AC grid because it has advantages such as power losses that are not large and fewer components. Between PV and DC microgrid, a DC-DC converter is needed to convert 24-36 V to 400 V. DC-DC converters must meet the criteria of continuous current, high efficiency, the polarity of the voltage is not reversed and is capable of bidirectional power flow for charging and discharging battery as energy storage. This final project proposes a DCDC converter that matches the requirements of the criteria by modifying the Cuk converter. In this final project, the modification stage of the Cuk converter is explained, then the voltage performance and power losses of the converter are analyzed and then verified with PSIM software. Then, from the analysis, the components are determined as the design of the converter. Then, an experiment was conducted in the laboratory to validate the analysis that had been done before. Based on the analysis, the proposed converter has characteristics in accordance with the requirements and has a smaller power losses and voltage losses than conventional converters (boost and Cuk). The converter that has been made has an efficiency of 92%.