Buck Your Solar with a Mex Gizmo?
Mex has a thread about equalizing with this sort of gizmo http://www.amazon.com/DROK-Constant-Current-Converter-Regulated/dp/B00E8D7XYG There are many of these on ebay with different specs, so t...
Forum Discussion
Just a few thoughts (or lack there of).
It will be interesting to see what happens when you drive a buck converter with a constant current source (gizmo between panel and controller). I think that the panel voltage and converter output current will go into wild oscillations at the point that the load (battery) is asking for more power than the panel can provide.
“I can use some resistance between the panel and the gizmo to reduce its input voltage to less than 32v.”
When the gizmo is not asking for any current there will not be any voltage drop across the resistance and the full open circuit panel voltage will be at the gizmo input!
Some have suggested using a power supply to drive a solar controller. This woud be interesting also, driving a controller that is made for a current source input with a voltage source input. If it is a MPPT controller will it try to find the maximum power point. That is will it lower the input resistance trying to find the maximum power until it burns itself out? Just wondering.
It will be interesting to see what happens when you drive a buck converter with a constant current source (gizmo between panel and controller). I think that the panel voltage and converter output current will go into wild oscillations at the point that the load (battery) is asking for more power than the panel can provide.
“I can use some resistance between the panel and the gizmo to reduce its input voltage to less than 32v.”
When the gizmo is not asking for any current there will not be any voltage drop across the resistance and the full open circuit panel voltage will be at the gizmo input!
Some have suggested using a power supply to drive a solar controller. This woud be interesting also, driving a controller that is made for a current source input with a voltage source input. If it is a MPPT controller will it try to find the maximum power point. That is will it lower the input resistance trying to find the maximum power until it burns itself out? Just wondering.
