Stability Analysis of Supercapacitor based DC Microgrid System with Energy Storage

In this paper explained off-grid supercapacitor-based Photovoltaic system with energy storage. The proposed system will operate in all possible conditions. In a conventional system supercapacitor govern at only high voltage. DC microgrid supercapacitor starts to self-discharge up to lower values. This nature of supercapacitor is making DC microgrid unstable at low values of supercapacitor voltages. So, in this study change in supercapacitor voltage and stability of DCMG is calculated., with adequate supercapacitor voltage. A new method of design is used to confirm DC Microgrid stability in all operations conditions. The firmness of the DC micro-grid with DC voltage controller for the DC link is analyzed and assessed by MATLAB Simulink platform and test results.