Please follow below steps:
Click on the ββ icon in the Design Studio page and select Export for PVSyst.
Two files (Ground and Subarrays) of .3ds format will be downloaded.
Open PVSyst and complete the Main Parameters.
Click on Near Shadings and select Construction / Perspective.
Click on File and select Import, then click on Import a 3D scene (3ds, DAE, PVC).
Locate the file and import both downloaded files (one at a time).