Abstract
In recent years, most of the loads in a typical home operate at DC voltage. Some of the loads to mention are LED lights, laptops, LED T. Vs, washing machines, and computers. The use of DC voltage at load minimizes the power losses that happen with centralized power generation. Moreover, tendency of using DC voltage provoke the path for smart micro-girds that form local distributed system and supply the loads locally. Further it encourages use of renewable energy resources as well. However, power conversion units such as DC-DC converter for obtaining desired voltage introduces non-linearity. Hence controllers/compensators are designed to maintain the system stabile at all operating conditions. In this work, a Home DC microgrid system fed from solar Photovoltaic array and battery is built and its performance is studied. A robust Energy Management System is designed to regulate the system voltage levels. Three different converters such as Boost, Bidirectional and Buck converters are used to serve the purpose. Various simulation studies are performed in MATLAB/SIMULINK to understand the system stability.
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