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jakudo asked

Choose correct MPPT

Hi,


I have 8x 260Wp panels. Can you please advice the best mppt regulator?

I guess that the best would be 2x SmartSolar 100/20

https://mppt.victronenergy.com/#djE7Y3VzdG9tLDIsMiw1NCwtMTAsNzAsNDgsOC42NiwwLjA1NCw5LjAyLDI2MCwzMC4wMiwtMC4yOSwzNy43OCwxMCw2

it has PV power ration 90% and it would be cheaper than 1x 250/60 with 60% PV power ration

https://mppt.victronenergy.com/#djE7Y3VzdG9tLDQsMiw1NCwtMTAsNzAsNDgsOC42NiwwLjA1NCw5LjAyLDI2MCwzMC4wMiwtMC4yOSwzNy43OCwxMCw2

What do you thing? Any advice what is better?


Thanks,

Jakub

MPPT Controllers
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Alexandra avatar image Alexandra ♦ commented ·
@jakudo

We would also need to know your system voltage. 12/24/48?


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jakudo avatar image jakudo Alexandra ♦ commented ·
It should be 48V as far as I know. 3x Pylontech US3000C
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Herve RV Nizard avatar image Herve RV Nizard commented ·
you cannot put 2 panels or series of panels on parrallel in a 100/20 as you will probably exceed the other (the hard one) 20a max input.


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christianf avatar image
christianf answered ·

Strongly recommending to use the XLS for your calculation, which gives much more details than the web calculator. Can be found here: https://www.victronenergy.de/upload/software/VE-MPPT-Calc-4_0.xlsm

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jakudo avatar image jakudo commented ·
So I've tried that excel sheet, however, since I'm a noob in photovoltaics, it didn't give me more information than the web calculator because I don't know how to interpret the details...
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