Performance analysis of series SPOs in a droop-controlled DC microgrid

Abstract

In this paper, the performance of a photovoltaic system equipped with solar power optimizers, as one of the distributed generation units of a test microgrid has been investigated. The power sharing in the test DC microgrid is controlled through droop method. Since droop method leads to output voltage deviations in distributed generation units, there is a possibility that this voltage deviation eclipses the operation of solar power optimizers. To address this point of uncertainty, a simulated DC microgrid has been tested in MATLAB/Simulink environment, which confirms that solar power optimizers continue to operate properly.