I would like to turn off the MPPT function on a charge controller.
How can I do this?
I thank you in advance for any assistance you may provide.
Kind regards,
asked
Can the MPPT function of a charge controller be turned off?
No that is not possible, that's how the MPPT charge controller works.
Why do you want to disable it?
Hi Matthias,
I would like to disable the MPPT function in the charge controller because it is in conflict with the MPPT function on optimizers that I am using with each solar panel.
The maximum voltage from a single solar panel is below the activation voltage for a single charge controller. In this case the activation voltage for the charge controller would be the battery voltage plus 5VDC or 53VDC, and the maximum voltage from a single solar panel is less than 40VDC.
Due to shading issues I require individual MPPT for each solar panel, and the smaller charge controllers from Victron are not an option since they do not have VE.CAN which I need as well.
I have been in touch with both the optimizer company (Tigo) and with Victron; however, there is apparently no interest on the part of Victron to make the optimizers compatible with Victron charge controllers.
Therefore, the only option (if I will use Victron products in this installation) is to disable the MPPT function in the solar charge controllers.
If you have an alternative path, I would be interested in knowing about it.
Kind regards,
You could use panels with a higher cell count.
Watch out, early sunpower modules required positive earthing.
First I have to say that I normally don't like AC PV-Inverters in an offgird system. But If you use a Multi/Quattro maybe an AC coupled SolarEdge solution would be an option for you.
