[RE-wrenches] Number of Controllers

[Jay Peltz]

Hi Colin. 

No limits beyond battery C rate limits. 

I've got 3 CC and 4 dump loads (3 AC and 1 DC). 

Biggest issue is getting them synced to the same voltage. 

Set points don't need to match. 

Jay

Peltz power. 





Sent from my iPhone

On May 23, 2012, at 6:47 PM, Colin Vogt <vogt at cinci.rr.com> wrote:

> Wrenches,
> What considerations are there for the number of charge controllers that can be in a stand-alone system with a single battery bank?  If one uses MPPT controllers, then  one would want (I think) a different controller for different module orientations.  That is, if one had a couple modules at one azimuth/tilt angle you would have a controller for that, and another controller for a module at a different azimuth/tilt angle.  Also, I can see having a controller to turn on yard lights (Morningstar makes one, although it is not an MPPT type and is of limited capacity).  Could also one have a controller for diversion loads?  And also a controller for a wind generator?  So I can see where a stand-alone system might have 4 or maybe even more controllers, all tied into the same battery bank.  Are there any considerations for a system like this?  For instance, do the setpoints for all controllers need to match?
> Colin Vogt
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