The DC inverter is a widely used element in PV systems. For this reason, we have added the element and an extensive library of models to choose from. The most essential properties for the DC inverter element are in the “DC Inverter” tab. In this tab the user should choose an inverter model. The output voltage may also be defined – this ability allows to model MPPT (maximum power point tracking) inverters. By changing the output voltage, it is possible to maximize power extraction. Value of this voltage influences PV system operation point and therefore generated power. For example, if defined PV system is not able to work at this defined voltage, DC power flow results will show that PV system is not generating but consuming power from network.
Furthermore, in the “General” tab of the DC inverter properties window the user may define the phase selection for the inverter and define parameters such as power factor and load percentage.
