Check irradiance mode before using dni decomp in allen method (i.e. is

code failing due to no dni provided)
NREL · Feb 2, 2024 · f118088 · f118088
1 parent b6fa37d
commit f118088
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/ssc/cmod_pvsamv1.cpp b/ssc/cmod_pvsamv1.cpp
@@ -1974,6 +1974,10 @@ void cm_pvsamv1::exec()
                         if (!isnan(Irradiance->p_weatherFileDNI[idx])) {
                             PVSystem->p_DNIIndex[nn][idx] = (ssc_number_t)(Irradiance->p_weatherFileDNI[idx] / dni_cs);
                         }
+                        else if (isnan(Irradiance->p_weatherFileDNI[idx]) && (radmode == irrad::DN_DF || radmode == irrad::DN_GH))
+                        {
+                            PVSystem->p_DNIIndex[nn][idx] = 0; //Simulation should exit when looking for DNI but no DNI found
+                        }
                         else {
                             PVSystem->p_DNIIndex[nn][idx] = (ssc_number_t)(Irradiance->p_IrradianceCalculated[2][idx] / dni_cs);
                         }