Anna_Sweden Posted September 16, 2016 Share Posted September 16, 2016 I am writing a guide about shadings on PV-systems, hence I am really interested in the “Module layout” with the possibility to view I/V-curves.I have created a string with six 200 W modules, 60 cells, 3 bypass-diodes, connected in series to an inverter with one MPPT. I have also created a really near shading which, most of the day, is almost covering the lowest row in three of the modules. This should result in two MPPs: one with the three shaded modules included and one without them when the bypass-diodes are taking over. This is not the case. Instead I get various results during the day, even though the shadow is almost completely constant, for example:11.45: full production, 1 MPP.12.00: 2 MPPs - one with a really low current and one with approximatly half the full voltage. 12.15: full production, 1 MPP.I think the result at 12 is the correct one, the others are not. Why is this the case? Can I do anything about it?Anna Link to comment Share on other sites More sharing options...
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