SolarEdge uses a string inverter with power optimizers. Power optimizers are located behind each panel and perform a few functions.
Power optimizers do the MPPT tracking and communicating with the main inverter and also act as rapid shutdown devices.
SolarEdge’s power optimizers do not perform the DC-to-AC conversion. Instead, DC power is sent to the main inverter box, where it is converted to AC. Once the conversion is complete, the power can be sent to the home’s main AC panel for use.
Using these methods, the SolarEdge Home Hub inverter is over 99% efficient at converting DC power to AC. A secondary advantage of this single conversion is that DC power can be used to charge a solar battery, maintaining high efficiency.