Choice of solar panels

[chiffon64]

first of all, hello to all. being brand new on the forum and especially not knowing how it all works (and yes ....... I was born in the last century !!!!!!!) I need some clarification about a solar system that I I am going up to a little shepherd's cottage. my goal and power 6 7 led lamps each under 220 volts and this for about 4 hours of operation per day (so 168 Wh per day). I have a 120 slow charge battery ah a 30 12 V / 24 V MPPT LCD Controller and a 12v / 220v 300w converter. until all worked knowing that my battery was recharged at home via a conventional charger. my worries and the following: my solar panels do not charge my battery although the voltage of the panels at the input of the regulator is 65 volts.le problem could it come from the fact that the tension is too high and that the regulator is put safe ? I hope I was quite clear. Thank you in advance.

[Gaston]

How did you connect the panels
According to the voltage (68V), it looks like you have 3 or 4 panels 12V serial.
If your battery is a 12V battery (which seems to be the case, considering the converter used), the panels must be connected in parallel at the entrance of the regulator.
You can try by connecting one panel to start.

[chiffon64]

Thank you Gaston for your answer. Actually my battery is an 12v and for the panels (2 total), they are well connected in parallel. These are 2 panels of 105w each for a Voc of 93,1volt and a Vmp of 71,5 volt. (For me, it's a bit of Chinese) so I wonder how I marked it in my first message if the regulator does not is not safe because the voltage is too high. So I connected the battery on the regulator on the terminals provided for the panels and there the regulator tells me that it works. So I think that 2 solutions are available to me. Or I change my panels or I change the regulator. But for that I would need some advice .......... thank you.

[izentrop]

a slow discharge battery from 120 ah a 30 A 12 V / 24 V MPPT LCD Controller and a 12v / 220v 300w converter.

Hello,
Does the MPPT regulator accept the maximum panel voltage (93.1 V)?
This model supports 100 V max input, and would be suitable https://www.victronenergy.fr/upload/doc ... -50-FR.pdf

Choosing led 12 V would avoid the purchase of the converter 12V / 230 V that should only be powered when the lighting work, because it consumes even empty.

[Gaston]

Thank you Gaston for your answer. Actually my battery is an 12v and for the panels (2 total), they are well connected in parallel. These are 2 panels of 105w each for a Voc of 93,1volt and a Vmp of 71,5 volt (for me, it's a bit of Chinese).

I'm afraid your panels / regulator / battery set is not consistent

Voc is the open circuit voltage ("no load") and Vmp the voltage at the maximum power point.
In general, for an 12V battery, panels with a Voc of the order of 20V are chosen, unless a specific regulator is used (as proposed by Izentrop)

It would be necessary to know more about your regulator (Brand, model, ...?)

[chiffon64]

According to the description (in English of course !!!!!) I understand that the regulator did not accept more than 48v input from which the fact that the regulator remains silent when I plug the panels ?? ??? A regulator accepting an input voltage of 100v and 30a would it be more suitable?

[chiffon64]

Here is the regulator

Regulator

[Gaston]

It looks a lot like this model sold on EBay which is intended for 12 or 24V panels (thus Voc around 40V) or thereof which specifies: Solar panels voltage: ≤48V

It seems likely that he will be safe at 65V.

The change of regulator seems easier and cheaper than changing panels ...

PS
Izentrop is doubly right: the converter 12V / 230V consumes (a little) and more LED 220V contain a power supply that converts 220V 12V ...
This power supply is also usually the first source of LED failure ...
So all power 12V continuous is much better (keep the converter for equipment more difficult to find in 12V).

[chiffon64]

Well, here. Now "more than". In any case, thank you for your CLEAR AND PRECISE answers. Thanks again !!!!!!!