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Hello, I advise you to start with the videos "My first Project" Regards,

Dear Kittitut, When receiving PAN files from manufacturers, these usually define some parameters – not mentioned on the datasheets – which considerably boost the performance of their modules in the simulation. These PAN files may often be directly provided by “independent” laboratories (claimed as “certified”). PVsyst tries to detect these anomalies, and gives you this information. In these cases you are advised to use default parameters proposed by PVsyst, which are usually more realistic. There are mainly 2 classes of such uncertain parameters: The IAM profile. We are convinced that the IAM of most PV modules should follow the Fresnel’s physical laws, either for normal glass or for AR coatings. We received measurements from very serious laboratories which are very close to Fresnel. And we had still this confirmation recently after an informal discussion with a responsible of a well-known laboratory in the USA. See our FAQ https://forum.pvsyst.com/topic/1190-how-to-determine-the-iam-profile/#comment-3181 The low-light efficiency as measured by some laboratories is often biased by the fact that the filters used for the measurements at 200 and 400 W/m2 deliver slightly higher irradiance than nominal. I have analyzed many measurement reports from these labs, and observed that the Isc/G ratio is not stable, as it should be. When correcting this the low-light efficiency usually stays between -3% and -2%, rarely higher. See our FAQ https://forum.pvsyst.com/topic/1030-how-are-specified-the-pan-files-in-the-pvsyst-database/#comment-2731 When using these boosted PAN files in your simulations, you have the risk of getting over-estimated simulation results with respect to the real system.. Regards,

This will describe how to use PVsyst on an Azure Virtual Machine, which is different from Azure Virtual Desktop. Azure Virtual Dekstop is not suitable for PVsyst as it is running on a specific Windows version which is actually a Server version. To be able to use PVsyst on Azure VM you need to make sure that you attach a secondary hard drive to the VM because the OS harddisk ID will always change when rebooting the machine. So basically you can create a basic HDD (not even an SSD) of 32GB (minimum available size now) and attach it to the VM prior to activating PVsyst. If you already activated PVsyst on the machine, you need to contact our support in order to reset your license : https://www.pvsyst.com/contact/

To modifiy this parameter, you must go to the file in question then : "Additional Data" then "Secondary parameters" :

We do not update "automatically" because each component of our database is controlled

We update the database using the requests of the manufacturers, and publish it with each new release of PVsyst. We can't of course follow all the new products of all manufacturers in the world. We don't want to include data without the acknowledgement of the manufacturer. 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: https://www.youtube.com/c/PVsystTutos, page Component database

No you can keep this box checked but instead of modifying the number of inverters you will have to modify the number of MPPT input in this case

To do this, you must create different sub-arrays. When you have a different number of strings on the MPPT inputs, you should create one sub-array for each configuration (for example one sub-array for the MPPTs with a single string, and another one for the MPPTs with two strings). Then, in ‘power sharing’, you tell PVsyst which sub-arrays belong to the same inverter and how the power of the inputs is balanced. I have attached a PDF document to this e-mail with short examples on how to proceed. You can also find more information in the help under: ‘Project design > Grid-connected system definition > Multi-MPPT inverters’ ‘Project design > Grid-connected system definition > Multi-MPPT inverters: power sharing’

Indeed in this case, as you need to maintain the DC/AC ratio of 1.20 you must manually modify the number of inverters in order to find the desired ratio

If you want to maintain the power of the PV field and the ratio of 1.20 then you must act on the number of inverters and the power of the inverters

Dear Paul Adrian, I think I didn't quite understand your question. I don't know if you want to maintain the same DC/AC ratio of 1.20 or maintain the PV power ?

Thank You for Joining Our Webinars! 🌟 We were thrilled to see so many of you participate in our two webinars on PVsyst 8 and PVsystCLI, and we sincerely thank you for your engagement and enthusiasm. Your questions were insightful and made the discussions even more enriching. 📄 To continue the conversation and address your queries, we’ve compiled all the questions asked during the webinars, along with our answers, into a handy PDF document. It’s now available for you to browse and download. Webinar_Q&A.pdf

Dear Rigal Tailor, This is caused by a definition error in the PAN file. If you want us to unblock the situation, you can send me the PAN file to support@pvsyst.com

Bonjour Oumar, Dans la base de donnée, vous pouvez cliquer sur "Choix Favoris" et ainsi faire votre liste de composants "favoris"

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