PV central inverters are connected to many PV module arrays and are very large. Power ratings of central inverters range from 100 kW to over 10 MW. They convert direct current (DC) electricity from PV modules into 3-phase alternating current (AC) electricity.
Central inverters are mainly used in large solar power plants (also known as solar farms, solar parks or utility-scale PV systems) and are connected to medium- or high-voltage transmission networks via a transformer.
Central inverter at a solar power plant feeding solar electricity into the national electric grid. The transformer steps up the relatively low voltage produced by the inverter to the higher voltages required by the grid.
A solar power plant feeding solar electricity into the national electric grid.
At very large solar power plants, several central inverters are used.