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karaokemasta22

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  1. Hello, I have read that you can transfer your PVsyst license and key to another computer but cannot go back to that original computer in the future. I am assuming that there is a way that the software can detect the MAC address. Is it possible to move it to a completely different computer? For example, I move the license from computer 1 to computer 2, and then half a year later, I want to move that license onto computer 3 (which has never used PVsyst before). Is this possible to do? Thank you
  2. Hello, I wanted to clarify something regarding the Module efficiency loss in the system simulation. I have read and understood that PVsyst uses a method where they take a quarter of the sum of the inferior and superior tolerance level for the Pmpp. For example, if the tolerance range was -3% to 3% then the default module efficiency loss turns out to be (3%+3%)/4=1.5%. 1.5% will be a loss. And for a tolerance range of (0%+10%)/4=2.5%. This will be a 2.5% gain. What happens if you have a range like -3% to 10%? One of the modules I have to use has such a range and when I click the default button for the module efficiency loss, it comes up to be -0.3%. This is a 0.3% in gain. Could you please explain how this value came about? Does it have something to do with statistical analysis with the normal distribution curve? Thank you
  3. Hello, I have been having this trouble with PVsyst where when I open a .SHD file from another project or someone sends me a file, the near shading settings change, especially when defining the arrays. I am not sure why this does this. I have to sometimes readjust all the sheds.
  4. I have simulated several plants with multiple azimuths and I have also read and seen that the mixed orientation mismatch loss is basically 0%. This is a little difficult to believe especially since there are certain strings that will produce a different IV curve than the ones that are facing the sun at a different angle. The IV curves are averaged, but why is there barely any mixed orientation mismatch loss? This topic is also relevant when we consider choosing string inverters over central inverters. Would it make no difference which inverter type we choose?
  5. Hello I am not sure if this is possible, but is there a way to export your near shading design from PVsyst to import it into the 3D design software Helios 3D? I know that you can import .h2p file to PVsyst, but can the opposite be done? Thank you!
  6. Hello thank you for your reply. So the inverter that I am trying to use does not have multiple MPPT capabilities, which is why I think it is impossible to implement in PVsyst. Is this correct?
  7. I would like to know if there is a way to implement different module types in 1 plant. My project is to expand on an already built plant but currently that module model is no longer available. I have to use a larger powered module since that is what is available in the market. So there are 40 new strings that contain modules of size 265W instead of 255W. I know that the power output of the new modules will be reduced because the voltage levels will be maintained when I connect these strings in parallel to a DCB. For example, there is 1 inverter with 5 DCBs. 1 DCB has a total of 32 inputs and 12 of these are made up of the 255W modules while the other 20 strings are made up of the 265W modules. I have already made sure that I am not violating any of the inverter voltage and current limitations. In PVsyst, can I make the system so that I can combine lower power modules with higher power modules in the same inverter? Thank you!
  8. Hello, I had some questions about the data collected in hourly format and the corresponding lines on the far shading diagram, with the horizon file imported from Meteonorm and using unlimited sheds. So it looks like Image 1. And Image 2 shows the data collected hourly for December 22. Image 3 shows what each parameter stands for. I would like to ask how we read those 20% and 40% shadow loss lines. And how can I get that loss percentage using the hourly data? Are those the right variables to read? Also, if I am reading this correctly, between 10h and 13h, we should not have any shadow loss since the December 22 line is above the Shading limit line (short-dot line). Is this correct? If so, why does the hourly data show some loss? I have gone through a lot of online research and honestly cannot find a simple/clear explanation so I would really appreciate an explanation on this forum. Image 1: Image 2: Image 3: Thank you for the replies
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