Jump to content

Muhammed Sarikaya

Moderators
  • Posts

    201
  • Joined

  • Last visited

Posts posted by Muhammed Sarikaya

  1. Dear Johan,

    From your error message, we can see that the 3D scene is larger than the declared system.

    I noticed that you are changing the number of trackers in batch mode, while also modifying the number of strings in parallel.

    There is a workaround to make this work:

    In PVsyst, go to Settings → Edit advanced parameters.
    image.png.a0fb7c4c4dc7cede84664ad33e22dbd7.png

    In the search box, type “area”, then adjust the parameter as highlighted below.

    image.png.042f2088a8a9fd99b3ed6aca633275a6.png

    Regards,

  2. Dear Zahra,

    If you know the exact global wiring resistance of your system and want a precise result, you can fill in the field "Global wiring resistance". Usually, the value for "Loss fraction at STC" is used when the exact global wiring resistance is unknown and you are just estimating it based on the STC value.

    For module losses:

    LID losses: Not applicable for PV modules based on n-dop wafers. You need to know the technology used in your PV module. Otherwise, we don’t have precise information regarding LID losses, since manufacturers don’t usually share this type of data. You can decide to add 1% or 2% depending on your confidence in the PV module. See our help page: https://www.pvsyst.com/help/project-design/array-and-system-losses/lid-loss.html

    Module Quality: Please read our help page: https://www.pvsyst.com/help/project-design/array-and-system-losses/module-quality-losses.html

    Module Mismatch Losses: Please also see our help page: https://www.pvsyst.com/help/project-design/array-and-system-losses/array-mismatch-losses/index.html
    Usually, this is also an approximation, based on your assessment of the PV module quality and the variability between them.

    Regards,

  3. Dear Zahra,

    For a stand-alone project, which is generally small and simple, we don’t represent the inverter, because the main focus is to understand how the PV modules, along with the batteries, will meet the users’ electricity needs.

    This is why it’s not possible to define an inverter with specific parameters for each MPPT in such a project.

    For your first question:
    No, this is not possible in PVsyst. The software does not allow you to input pre-calculated PV production as an input. In a stand-alone system, you must define the PV fields, and PVsyst will calculate the production based on those components.

    For your second question:
    Could you tell me which parameter you would like to modify?


    Regards,

  4. Dear Oscar

     

    First of all, in the "unlimited shed" orientation, the sensitive width is the total width of the modules aligned on your PV table.

    For example, if your PV module is positioned in landscape in your 3D scene, the smaller side is 1.134 meters. Since you want two rows placed one above the other in each table (still in landscape), you need to multiply the smaller length by 2:
    1.134 × 2 = 2.268 meters.

    In my example below, I used 2 meters as the sensitive width.

    image.png.c46786647139234447264e43f18d1660.png

    You can always verify in the 3D scene whether the sensitive width value is correct. But if you already know the dimensions of your PV module, its orientation (landscape or portrait), and the number of rows per table, you can calculate the sensitive width.

    You can also click on the "Help" button in the "Show Optimization" window — it will open a help page with a full explanation (see below).

    image.png.f96bb997c5a169d966a9c1414196598f.png

    If you need more information or something isn’t clear, don’t hesitate to reach out to us.

     

    Regards,

     

  5. Dear NFI,

    I don't understand what you mean by "one way to configure the string with inverters."

    I invite you to watch this tutorial, which explains well how to configure it:

     

     

    Regarding near shading, it can indeed be difficult to place the modules. I suggest trying the zone tools as well.

    Also, if you encounter an error message, please send it to us at support@pvsyst.com along with a screenshot, so we can help you solve the problem.

    Regards,

  6. Dear Shivam

     

    The map size is limited, but if you want to import an image, you can do the following:

    Take a screenshot of a satellite image.

    Then import it via File > Import > Import a ground image.

    Finally, you need to scale the image to match the actual scale.

     

    To crop an imported image:

    Double-click on the image.

    You will see "Ground Image" with a Crop option (highlighted at the bottom right).

    Click on it to crop and resize the image.

    image.thumb.png.3df845524be076254ef1264579727693.png

    Regards,

  7. Dear Greg,

     

    If you don’t want to import energy from the grid, it’s considered a stand-alone project. I suggest running your simulation as a stand-alone system.

    In a grid-connected project, the grid supplies energy when the system can’t meet the user’s demand.

    See my screenshot below:

    image.png.a9c8bc69edfa2ffa3afbeda28e28a8f4.png

     

    Regards,

  8. Dear Carlos,

    I don’t recommend importing a detailed 3D forest file into PVsyst. The more detailed the 3D scene is, the longer it takes to calculate the shading impact on the PV tables.

    For the horizon line, you can already import the mountain line in PVsyst using the horizon feature.

    In the 3D scene, if there is a forest at the edge of your terrain, I suggest drawing a wall to represent the last row of trees.

    Regards,

  9. Dear Alex,

    Is it possible for you to send us your project at support@pvsyst.com so we can test it and compare the results between V7 and V8?

    In your email, could you also explain the procedure you followed that led to these differences?

    Regards,

  10. Dear Nikoloz,

    It seems that the inverter you want to use is a central inverter with only one MPPT. This means all strings connected to it must be identical.

    So, you don’t need to worry about the MPPT definition. In PVsyst, just select the configuration “PNom sharing within the inverter” (see below).

    image.thumb.png.29cc5d3ceab75fd6e7fefccf03807621.png

    Then, you only need to specify the number of inverters.

    Regards,

    image.png

  11. Dear Ishan,

    First of all, the Unlimited Tracker represents an idealized PV table layout, with all rows having exactly the same length. Most likely, your 3D scene doesn't follow this idealized representation.
    Could you please send us your project by email at support@pvsyst.com, so I can check it and explain why you're seeing these differences?

    Regards,

  12. Dear,

     

    I can’t help you with AutoCAD or how to convert the topography to a CSV file. Maybe just make sure to check the X, Y, Z coordinates in the CSV.

    With version 8, we can import topography from the internet — it might also be useful for you.

    Here’s how to do it:

    In Near Shading, click File > Import > Download a satellite ground image and/or ground data

    image.png.f495b6755f4aa1e2410cf4b110de4782.png

    Then, don’t forget to check “Also import topography data”

    Regards,

  13. Dear Cleyson,

    I created the PAN file based on the datasheet and didn’t get any error messages, see below:

    image.png.f8aec1a5309ae5b239680f3df0ba93ae.png


    image.png.5c7a9c6ba6b1621635304f73d62f9100.png

    Click on the "Model parameters" tab and select the default value for series resistance, as shown below:

    image.png.d8a36d842d7a0d8c971b43eec56d1f8a.png

    Try using exactly the same settings and let me know if anything changes for you.

     

    Regards,

  14. Dear,

     

    We update the database using the requests of the manufacturers, and publish it with each new issue of PVsyst.

    We can't of course follow all the new products of all manufacturers in the world.

    Therefore, please ask your provider/manufacturer to take contact with us for updating the database.

     

    Nevertheless you can easily create your own components by yourself. The easiest way is to choose a similar existing device in the database, modify its parameters according to the manufacturer's datasheets, and save it under a new name, therefore creating a new file in your database.

    You have a tutorial for that on youtube:  

     

    Regards,

×
×
  • Create New...