shamimsiddiqui

Hi, We are installing a 10 MWp Floating Solar PV plant in madhya Pradesh state of India. Request you to please provide your recommendation for values of Thermal Loss Factor - constant component Uc as well as wind velocity component Uv to be considered for Floating PV plant. Modules will be tilted 5 degrees and the pond is open from all sides, ambient temperature is approximately 45 deg C during summer and 5 deg C during winter. Kinldy let me know if you needd any other detail/data from my side. Thanks, Regards, Shamim Siddiqui

Best wishes for the day! As I could understand from various resources, we should calculate Module Temperature in reference to NOCT values as flowing: Tmodule = Tair + ((TNOCT – 20)/800)*Irradiation The formula is valid only for open rack system. Kindly suggest the authenticity of this calculation. Please provide references if applicable. Also, could you suggest the ways to calculate the same for closed rack / flush mount systems.

I would like to understand the string voltage calculation for minimum, maximum and arbitrary temperature values. As per my understanding following are the calculations: Vmin = {(Tmax – 25) X ∆Vmp* X Vmp + Vmp} X No. of Modules Tmax is Day Maximum Module Temperature *∆Pmp shall be taken if ∆Vmp is not provided by manufacturer Vmax = {(Tmin – 25) X ∆Voc X Voc + Voc} X No. of Modules Tmin is Day Minimum Module Temperature VNOCT = {(TNOCT – 25) X ∆Vmp* X Vmp + Vmp} X No. of Modules TNOCT is NOCT Temperature provided by manufacturer *∆Pmp shall be taken if ∆Vmp is not provided by manufacturer However, we have also found some references which suggest following for minimum string voltage: Vmin = {(Tmax – 25) X ∆Vmp* X Voc + Voc} X No. of Modules Tmax is Day Maximum Module Temperature *∆Pmp shall be taken if ∆Vmp is not provided by manufacturer There are certain projects whose feasibility is at stake due to this confusion. Kindly suggest.