Not bad starts . . . I am pondering some similar things for trough solar concentrators.
Venetian-blind trackers make more sense for a trough solar collector than they do for a photovoltaic panel.
A trough needs to track, and can do it by just rotating the mirror and leaving the pipe in one place.
A trough that is partially shadowed will just drop its output in proportion. A photovoltaic panel will have some cells shaded and not others. This will drastically reduce output voltage (unless it has the cells wired strictly series up the long direction and parallel in the short direction - which I have NEVER seen).
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