r/solarenergy • u/komlosia • 22h ago
PVsyst electrical shading partitions for N-S single-axis trackers with half-cut modules, one 23-module string per table?
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Hi all, I’m setting up the electrical shading partitions in PVsyst (v8) for a single-axis tracker project and want to sanity check my approach.
Setup:
- N-S horizontal single-axis trackers with backtracking
- Half-cut modules in portrait, [1P / 2P] per tracker
- String inverters
- Each tracker table is exactly one 23-module string
What I understand from the PVsyst docs:
- For regular arrays, modules on the same MPPT input should see the same partial shading, so I shouldn’t split along the tube.
- For half-cut modules in portrait, the docs say to use partitions at half the module height (the “xT” case, 2x partitions across the table).
What I currently have in the 3D field editor:
- Nb. rectangles in length (Y): 1
- Nb. rectangles in width (X): 2
My questions:
- For a table that is a single 23-module string, is 1 partition along the tube and 2 across the table (one per half of the half-cut module) the right call?
- Should I split along the tube at all, or only if shading varies along the row (hilly terrain, end shading from obstacles)?