OPTIMIZATION OF MULTIPHASE CASCADED DC-DC BOOST CONVERTER

• Main Author: Hafizh Makarim, Faris
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/46668
• Institution: Institut Teknologi Bandung

This research contains the optimization process of multiphase cascaded DC-DC boost converters. Multiphase cascaded DC-DC boost converters are converters that have a very high gain level and can have a zero input current ripple which are suitable for photovoltaic in microgrid DC implementation. The research starts with derivation of losses equation in the converter and optimization process. The equation and the result of the optimization are then verified with simulation and laboratorium experiment. The optimization is done to achieve the highest efficiency as possible with 36V input voltage, 325V output voltage, minimized input current ripple, and 260W rated power. The optimization is done by selecting the best components for each phase of converters followed by choosing the best phase for each converters. The optimized converter is 3 phase converter, 0.66 duty cycle, cascaded with single phase converter. The maximum efficiency of the converters is 98.81% and is proven by simulation. Laboratorium experiments have verified the derived equations and have resulted converters with efficiency more than 85.8%. The gap between simulation and laboratorium experiments is in the limitation of the components in the laboratory.