Array Sizing in PV Components Posted November 24, 2015 · Edited December 1, 2015 by tolga Hello, I have a trouble about sizin array. There is a difference in operating conditions between calculated by PVsyst and me.For example, I calculate operating conditions; Voc(-10) = Voc,stc * (1 + (Toc-Tstc)*b); b is Temperature Coefficients of V, for selected panel b is -0.31 %/C so;Voc(-10) = 37.7 * (1 + (-10-25)*-0.31%) = 41.79 V likewise Vmpp (60C) = 27.10 V.Calculated operating conditions; Voc(-10C) = 835.8 VVmpp(60C) = 542 VThere is a dramatic difference, especially for higher temperatures. I can't figure out what is reason.System Design by PVsyst
Array Sizing
in PV Components
Posted · Edited by tolga
Hello,
I have a trouble about sizin array. There is a difference in operating conditions between calculated by PVsyst and me.
For example, I calculate operating conditions;
Voc(-10) = Voc,stc * (1 + (Toc-Tstc)*b);
b is Temperature Coefficients of V, for selected panel b is -0.31 %/C so;
Voc(-10) = 37.7 * (1 + (-10-25)*-0.31%) = 41.79 V
likewise Vmpp (60C) = 27.10 V.
Calculated operating conditions;
Voc(-10C) = 835.8 V
Vmpp(60C) = 542 V
There is a dramatic difference, especially for higher temperatures. I can't figure out what is reason.
System Design by PVsyst