AKSolar Posted September 12, 2013 Share Posted September 12, 2013 I am trying to model a system with 12,969 modules among 6 inverters. About 20% of the modules are 305W and the others are 300W. As you can see this does not break down evenly onto a single inverter, so one inverter will need to have 2 different module ratings. This does not seem to be possible with the multiple sub-systems feature. How could I model this scenario? Link to comment Share on other sites More sharing options...
André Mermoud Posted September 15, 2013 Share Posted September 15, 2013 This could be treated using the Mismatch loss. I intend to provide a tool for conputing the mismatch on a given array using real modules, which will be suited for such a study, in a rather near future. However if you put all the modules of the same power in a given string, the mismatch in voltage between strings is usually very low. You can evaluate this by using the tool "Electrical behaviour of PV arrays", where you can define 2 strings with different modules, and analyse the Pmpp of the resulting I/V curve. With such a difference (5W/300W = 1.7%), the difference when considering 1 "mean" module of 302.5Wp and 2 strings of 300 and 305 Wp will probably be hardly detectable. Link to comment Share on other sites More sharing options...
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