Performance Requirements of PV Converters
Efficiency
The losses of the PV inverters have reduced in time, and efficiency achieves values above 97% (see, for instance, SunnyBoy 5000TL by SMA for domestic applications below 5.25 kW) and even more for central inverters (see, for instance, SunnyCentral 760CP XT by SMA, a central inverter with nominal power up to 850 kW with 98% of efficiency). There- fore, it can be affirmed that the PV inverter efficiency for state-of-the-art brand products stands around 98%. However, it has to be noticed that the efficiency is expected to achieve higher values when silicon carbide (SiC) and gallium nitride (GaN) devices are vastly used as the basic power semiconductors of the PV inverters in the next decade.