Design and Control of a Multi-Port DC–DC Converter for Integrated Solar PV, Fuel Cell and Battery

The objective of this work is to design and analyze a multi-port DC-DC converter for integrating multiple energy sources such as photovoltaic (PV) array, battery and fuel cell and to provide a high step-up output voltage. The converter so produced can accept low input voltage (about 60 V from the PV array) and step it up to a much higher voltage (about 600 V), which makes it suitable for applications such as electric vehicles and DC microgrids. ·                     The design has some notable advantages compared to the conventional boost converter: ·Increased voltage gain with moderate duty cycles · Lower switching stress on power devices ·                     Efficient power sharing between multiple sources ·                     Flexible operation under different modes (PV only, battery only, hybrid mode) The simulation results back up stable operation across a range of conditions, including changes in load and in which sources are available, and the chosen inductor and capacitor values keep the current and voltage waveforms smooth with minimal ripple. Overall, this converter improves system reliability, efficiency, and adaptability, making it a promising building block for renewable energy integration.

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