question

sonntagskind3 avatar image
sonntagskind3 asked

Which MPPT SmartSolar should I use?

HI there, I am new here and I just wanted to make sure I buy the correct MPPT SmartSolar.
I used the calculator but I am not sure if I used the correct number since it is a bit confusing for me.
I would like to buy 3 PV Modules as folowing and connect them "Parallel".

Thank you very much in advance.

1x

Maximale Leistung (ppm): 200W ± 5%
Zellmaterial: Monokristallines Silizium + ETFE
Maximale Conversion-Rate (EFF): 23 % – 25 %
Leerlaufspannung (Vor): 38,4V土5%
Maximale Ausgangsspannung (Vm): 32V土5%
Kurzschlussstrom (lse): 6,87A土5%
Maximaler Ausgangsstrom (lm): 6,25A 土5%


2X

Maximale Leistung (ppm): 100W ± 5%
Zellmaterial: Monokristallines Silizium + ETFE
Maximale Conversion-Rate (EFF): 23 % – 25 %
Leerlaufspannung (Vor): 30,6 V ± 5 %
Maximale Ausgangsspannung (Vm): 25,5 V ± 5 %
Kurzschlussstrom (lse): 4,58 A 土 5 %
Maximaler Ausgangsstrom (lm): 4,17 A bei 5 %

MPPT SmartSolarSolar Panel
2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

3 Answers
Duivert NL avatar image
Duivert NL answered ·

hi if youre going to use different panels, you will not get full potential out of them... or you would need to use 2 mppt's

2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

sonntagskind3 avatar image
sonntagskind3 answered ·

hi there, I could use blocking diodes so the current would go over. Would that change anything?

4 comments
2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

kevgermany avatar image kevgermany ♦♦ commented ·
No. Your proposed setup has panels with very different values for max power voltage and current.

Guess there's a reason for the proposed setup. If it's not space, maybe look at 3 of the larger panels.


0 Likes 0 ·
sonntagskind3 avatar image sonntagskind3 kevgermany ♦♦ commented ·

yes the space is my problem. The panals are supposed to be installed on a caravan and I wanted to use as much space as possible.

0 Likes 0 ·
Show more comments
regman54 avatar image
regman54 answered ·

@Sonntagskind3 If 300 watts of solar will meet your needs have you considered using two 150 watt panels wired in series?

2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

Related Resources

MPPT product page

VictronConnect manual

PWM or MPPT

MPPT calculator

MPPT codes

Additional resources still need to be added for this topic