Technical data

Characteristics of transformerless single-stage conversion inverters"
The "pros" and some limitations of single-stage technology:
Pros:
 High peak efficiency, combined with relative simplicity of the circuitry.
 Solution very effective if the input voltage range is rather small and particularly complex panels
configurations are not required.
Limitations:
 Range of input voltages limited and shifted "upward".
The conversion and grid input is possible only for input
voltages higher than the grid peak. Usually the DC range is
between 350Vdc and 650/700Vdc for these inverters.
 High efficiency performance peaks, but only available in
a narrow voltage range and in some cases "marginal" with
respect to voltage variations inflicted on the PV generator
by the heating of the cells and changes in radiation.
Energy conversion to alternating current