Moataz Yassin Posted March 2 Share Posted March 2 We are facing a problem regarding the number of modules in series in a project in the gulf area. all the manual calculations indicates that we can use from 29 to 30 modules in series of power of 570Wp and Voc 51.07 after considering the lowest temperature on site and the irradiance at this temperature the voltage became suitable to use 29 or 30 modules but the PVSYST indicates maximum of 28 so what considerations does the software uses as we extracted the Tarray and the Irradiance and the string operating voltage and all are within the limits so do anyone has a reason why PVSYST use less modules ? Link to comment Share on other sites More sharing options...
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