Performance of Integrated High Voltage Gain DC-DC Converter and Diode Clamped Multi Level Inverter with Renewable Energy Source in Standalone Applications

Environmental sustainability is crucial, especially in electrical power generation using renewable sources like photovoltaic or fuel cells. However, these sources, while beneficial, often provide fewer voltage values, requiring power converters that can boost the input voltage in microgrids to align with the DC bus voltage in remote areas such as standalone applications. The design of these converters with switching capacitors is vital for achieving the required DC link bus voltage. During operation, these capacitors work in series and parallel, delivering high static gain and mitigating reverse voltage stress. This converter meets various requirements, including high voltage gain, using just one switch, reducing potential stress between components, and minimizing ripple current. Operating in a closed loop to regulate input voltage for the diode-clamped multilevel inverter, the dc-dc converter’s output seamlessly integrates into the inverter for better performance in remote areas for standalone applications, and is verified through MATLAB/SIMULINK. The simulated results were validated in real time using the OPAL-RT system.