multi-directional array

I have a customer that wants to put up 4 modules, one facing east, two facing south and one facing west. Rather than buying four MPPT controllers I was considering putting a schottkey blocking diode on each directional array and using a single controller.
Wondering if anyone sees any complications with this or has used this approach. Thanks
Wondering if anyone sees any complications with this or has used this approach. Thanks
Comments
The part you are right on is a mppt can get fooled by an east and west array. Clouds can cause it to pick the wrong mppt V. In your case with small arrays it is not going to be a problem. The issue is real for a 3KW east and a 3 kw west array, especially for clouds.
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Not sure how an MPPT controller will deal with this but it probably won't be too far off.
Thanks for helping me think this through guys.
The ones I use by Schneider are marketed as shade tolerant. They correct in less than a second for max power point voltage.
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I know several folks using multiple arrays (virtual tracking) and they are fine.
Each string MUST be identical - panels & VOC, or the controller can get confused easily
Bruce - from another board, has lots of land, time and machinery, and has built many arrays
with harvest documentation about how they work with virtual tracking.
starting with post 25 in this long thread, it gets into the meat
https://www.solarpaneltalk.com/forum/solar-panels-for-home/solar-panels-for-your-home/13861-sun-hours?p=163376#post163376
(Of course the reason the Bruce gets some many hours of "producing sunlight" in one day is due the way he has set up his panels. One group is facing East, another South and a third West. So for most of the day at least one group is producing.
It is a very impressive system. Great job Bruce. )
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