API field
Per-voltage efficiency curves
Efficiency curves measured at several DC voltages
Unit V / fractions / efficiencies
What it is
Efficiency curves measured at two or three DC input voltages: the list of test voltages, and for each voltage a list of loads and a list of efficiencies. The inverter's efficiency at any operating point is read between the curves.
Typical values and how to get it
From the OND file, which usually carries three curves. If not given: no per-voltage curves: the part-load curve alone, with no voltage effect.
References
- Driesse, Jain & Harrison 2008, Beyond the curves: modeling the electrical efficiency of photovoltaic inverters, IEEE 33rd Photovoltaic Specialists Conference
API
inverter.voltage_curves