Analysis and Control of DC Microgrid Using Quadratic Boost Converter with Intelligent Controllers

This paper presents the modeling, simulation, and comparative analysis of a DC microgrid system under healthy and faulty conditions. The system incorporates renewable energy sources such as PV, wind, fuel cells, and battery storage, regulated through a Quadratic Boost Converter (QBC). Faults including shorted switch, line-to-line, and line-to-ground conditions are analyzed through MATLAB/Simulink simulations. Control strategies including Proportional-Integral (PI), Fractional Order PID (FOPID), and Fuzzy Logic (FL) controllers are implemented to regulate output parameters. The FOPID and FL controllersshowed improved transient response compared to conventional PI control. Results demonstrate