Keysight RP7970 Serie Manuel D'utilisation page 162

4 Using the Regenerative Power System
This model is described in the paper: Britton, Lunscher, and Tanju, "A 9 KW High-Performance Solar
Array Simulator", Proceedings of the European Space Power Conference, August 1993 (ESA WPP-054,
August 1993)
Terrestrial Curve Shape
The following equations describe the solar array simulator terrestrial model using the parameters Io
and Caq, which are defined as functions of the four input parameters Voc, Vmp, Isc, and Imp.
The above equations are derived from equations C.9, C.10, and C.5 in European Standard EN50530
(April 2010), "Overall efficiency of grid connected photovoltaic inverters".
These equations also are mathematically equivalent to equations 8, 9, and 7 in the Sandia Inverter
Performance Test Protocol, "Performance Test Protocol for Evaluating Inverters Used in Grid-
Connected Photovoltaic Systems". To establish this equivalence, the following variable substitutions
must be made:
EN 50530 Sandia
I 0 I sc *C 1
C aq C 2
162 Keysight RP7970 & RP7980 Series Operating and Service Guide