Muhammed Sarikaya

Dear Swonno, You missed selecting X1 and X2, which is why you are having trouble adjusting your image. When you import a ground image, it must include the scale. See my example: Be sure to have the same value for Y1 and Y2. Also, don't forget to set the distance between X1 and X2 to match the screenshot of your Google Maps. When you click, the size of your image will be adjusted. Additionally, you can modify the opacity, but don't click on apply. You must add a 2D image in PVsyst. Regards, Muhammed Sarikaya

Dear Zainol, You can modify the baseline slope. In the near shading window, click on 'Tools' and then on 'List and Management of Objects.' A new window will appear. In the 'Baseline Slope' column, set everything to 0. This way, you will have the same nominal azimuth and tilt that you defined initially. Regards,

Dear Swonno, Your first question is not clear. Can you explain what you are trying to do? Regarding your second question, by default, the ground object doesn't cause shading, but it is possible to activate it. You need to double-click on your terrain in the right panel and then check the "Enable shadow casting" box, as shown in the example below. Regards, Muhammed Sarikaya

Dear Vera, This information is a leftover from the first version of PVsyst. You won't find it in the technical datasheet. Please ignore it. Regards, Muhammed Sarikaya

Dear, I invite you to consulte this help page of PVsyst: https://www.pvsyst.com/help/shadings_factor_table.htm During the elaboration of the shading table, the points (sun positions) located behind the plane of the PV field appear in blue. The highest entry among the blue ones is extrapolated from the above entries. This is to avoid artifacts in the interpolation of the shading factors. Other entries for which the sun arrives behind the plane are marked as "Behind". Regards, Muhammed Sarikaya

Dear Muhammad, Can you give us an example and explain in detail what you want? Regads, Muhammed Sarikaya

Dear James, Polygonal tables are not suitable for bifacial systems. I suggest using a full table, but be aware that your shading calculation might be slightly higher than the actual value. Regards,

Dear Swonno, There is a technic to work with rooftop. First, activate the button "normal to face" With your mouse, position on the menu point of view and click righ, you will see that you can add the button "normal to face", see my screen shot: It helps you to position normal to the selected face. Very important to know, you have to activate the render "realistics" to acced to this button: Then, click on any surface you want and you noticed that when it selected the color is slightly different. I hope this trick will help you. Also, there is an other tools very helpful, it's "automatic altitude" You can select the PV panel and then select "automatic altitude" A new windows appear at the right in the "tools" panel and you can define the distance from the ground and then, you have to click on the button "Set auto. altitude" Regards, Muhammed Sarikaya

Dear James, I understand what you want to do. You need to create a polygonal PV plane. Then, right-click to delete one or more modules when you position the mouse over a PV module. Regards, Muhammed Sarikaya

Dear James, Can you explain your procedure for creating this table so I can understand what went wrong? Regards, Muhammed Sarikaya

Dear James, Could you please share a screenshot of your system? It's unclear why some modules are missing. Regards, Muhammed Sarikaya

Dear Irakli, First of all, don't modify OND file and PAN file. Your problem is divided in two categories: 1. How to size a PV system with MPPT definition 2. Limits and conditions for sizing a PV system When defining your project, be careful to deactivate the 'MPPT feature' checkbox if you don't plan to configure it. This doesn't mean the software won't calculate based on the maximum power of the PV array. The message 'The array Voc at -10°C is greater than the inverter's absolute maximum input voltage' indicates a major condition that must be respected when defining the PV system. You need to know that the PV array voltage changes with temperature, and if the voltage exceeds the inverter's maximum input voltage on a cold day, it could damage the inverters. You can read more on this help page: https://www.pvsyst.com/help/systemgrid_vocond.htm Regards,

Dear Swonno, You can click on these three buttons "X-Y" or "X-Z" or "Z-Y" to displayone side. As a reminder, near shading it not intended for complex drawings. Try to keep it simple, as the purpose is to simulate the shading of objects on your PV plant. Regards, Muhammed Sarikaya

Dear Irakli, In this case, don't use the topography in PVsyst if you plan to adjust all the supports to have the exact same tilt and azimuth. Regards, Muhammed Sarikaya

Dear Irakli, Indeed, these values cannot be edited. When working on a project with complex topography in PVsyst, the solar tables installed in the field will often have actual azimuth and tilt values that differ from the expected nominal values. This occurs because the software automatically adjusts each table to the local topography, resulting in natural variations in these angles. Can you confirm that you are working with a topography? Also, could you explain why you want to modify these values? Regards, Muhammed Sarikaya

Dear Irakli, It's possible to change these values. If you select all the tables, your modification will apply to all the selected tables. To modify the tilt, for example, just click in the box where you want to change the value, and it will be applied. Regards, Muhammed Sarikaya

Dear Claire, It seems your view is in 'perspective view'; maybe you should try clicking on the 'Orthogonal Projection' button, and you will see your table at the same height. Regards, Muhammed Sarikaya

Dear Nikoloz, Thank you very much for your suggestion. I will inform our development team about this feature. Regards, Muhammed Sarikaya

Dear Sarah, In the previous project description, it seems that the PV array consists of fixed-tilt PV tables initially oriented towards the east and west. Due to the topography, the orientation of all tables will change, which is why it results in eight orientations. What you mentioned about the horizontal N-S axis is used for tracking systems. Tracking, horizontal N-S axis: this is the usual configuration of horizontal axis tracking systems. Is this clear enough for you? Please don't hesitate to write to us." Regards, Muhammed Sarikaya

Dear Sarah, I invite you to watch this video to understand how you can import a 3D scene into PVsyst. I don't understand your second question. Could you elaborate and explain what you need clarification on? Regards, Muhammed Sarikaya

Dear Edwin, I can suggest you to read this post: The LID effect only arises with conventional p-type boron-doped wafers. Unconventional technologies using n-type doped wafers (as for example SunPower mono-facial cells) are not affected. LID is a loss of performances arising in the very first hours of exposition to the sun, with Crystalline modules. It may namely affect the real performance with respect to the final factory flash tests data delivered by some PV module providers. This loss is permanent over the entire lifespan of the PV module. Regards, Muhammed Sarikaya

Dear Irakli, When running in DEMO mode (after the license has expired), you can operate the program and explore all options. You can open existing project files (especially the DEMO projects), view parameter definitions and results, but you cannot save any files. You will only have access to a restricted set of components in the database. If you created a project during the trial license period, you can save your project and continue using it after you purchase the license. Regards, Muhammed Sarikaya

Dear Claire, Is it possible for you to send us your project as a zip file to support@pvsyst.com? I need to investigate and understand what the problem is? Regards, Muhammed Sarikaya

Dear Claire, In 'orientation,' the method you use to define the position of the PV module will impact the 'global incident in coll. plane.' You probably defined the orientation with a 0° tilt, which is why you are seeing a 0% percentage. Could you please check the orientation and let us know? Regards, Muhammed Sarikaya

Dear Alberto Cerrone, Are you using multiple sub-arrays? I encourage you to read this help page: https://www.pvsyst.com/help/multi-mppt_more-examples.htm Regards, Muhammed Sarikaya