A DC-DC Buck Converter for Standalone Solar DC Microgrid System using Perturb and Observe MPPT Algorithm

DC Micro grid systems which utilize Solar energy from solar photovoltaic panels to obtain the required electric power are integrated with a power electronic converter. For efficient and maximum utilization of power, load impedance should be equal to source impedance. In this paper a Buck converter is designed, which helps in matching the load impedance and the solar- panel impedance, so that the maximum power can be transferred to the load for efficient utilization of the solar energy. Perturb and Observe algorithms are used for Maximum Power point Tracking to ensure maximum power utilization at different irradiance levels on the solar photovoltaic panels.