Design characteristics of a microgrid controller for an uninterruptible power supply with a photovoltaic generator

A good microgrid controller must guarantee: voltage regulation, islanding control and a safe reconnection during grid-connected and islanded modes. Also, to provide an uninterrupted power supply maintain the power quality during its operation the controller needs to act over the generators and power switches of said microgrid. The objective of this paper is the determination of these actions for a particular microgrid. For this reason, the operation of a single-phase photovoltaic generator with battery is analyzed and the control actions required for an efficient management are proposed. Said actions are evaluated with a simulation that composes the generator with its internal power and control circuits in a microgrid environment. The simulation model is implemented in MATLAB Simulink.