Hybrid Power Project in the woods (with pre)

[chatelot16]

400 Ah x 24V = 9600 Wh

consuming 1200 Wh / days it's a theoretical autonomy of
9600 / 1200 = 8 days

1200 Wh / j / 24h = 0,05kW = 50W of average power

190W x 6 = 1140 W

with the sunless days and days we can count on the 1 / 10
so 114W

just double the consumed 50W: it's not glorious

the 8 days of theoretical autonomy is not glorious either because when the battery is empty after lack of sunshine, the first day does not charge it thoroughly

50W average power is low, you really have to save the maximum to get there

[Forhorse]

4 lead batteries open 6V 400Ah
2000W converter

For me it already blocks at this level.
To maximize the life and capacity of a battery, it should not be charged / discharged at more than C / 10
So here you have 400 / 10 40A maximum exploitable current.
either roughly a little more than theoretical 950W.
So 1000VA maximum converter or batteries 800Ah
but this couple batteries / converter does not go together.

[chatelot16]

we can have a converter 2000w on a battery that can give 900W continuously, but you just have to know that these 2000W are a peak power to never use too long

we can apreciate these 2000W for a grinder or another large power tool, but do not abuse ... otherwise battery quickly dead

the problem is the empty consumption of an 2000W converter?

when the goal is an average consumption of 50w, if an 2000W converter has an empty consumption of 20W it is wasting too much by itself

the vacuum consumption of the converter is highly variable depending on the model, there are some who consume a little empty vacuum

it is still more reasonable to let a smaller converter run continuously, and to turn on the big only when it is needed

[chatelot16]

Our current fleet opZs 24v 532Ah at C20, cost us 2000 € delivered.
We unload daily max 18% park is SOC = 82% which allows to expect a life of the park of 15 / 20 years to 25 ° c with a daily follow-up , good MPPT charge controllers regulated in T ° to 4 steps, and especially a battery monitor INDISPENSABLE, monthly equalizations ....

which battery monitor do you use?

[swallowtail]

Hello everyone,
I would take the prob on the other end!

autonomy = DIY = tools (drill, invertor station, grinder, chainsaw, log splitter, compressor, etc.)
So 2000W to 2500W instantaneous to have available for short periods (a few minutes) => 2000w continuous converter required or 4000wc.

Battery Park
consumption = minimum daily production = 1200Wh / day in 24V is 50Ah / d
and discharge level max50% + autonomy 3 days
=> 50 / 0,5 x 3 = 300Ah + converter losses 10% = 330Ah in C20 or as standard (350Ah C20)
power available battery = current Discharge or instantaneous max load C / 10 = 35A x 24V = 840W instantaneous available on batteries

PV PARK:

rest 1160W instantaneous that will be brought directly by the panels is 190Wc - 20% losses = 150Wc and 1160W / 150Wc = 6 to 8 panels:
* 8 PV: Maximum charging current 8x150w / 24v = 50A is C / 7
(max acceptable C / 5)

* 6 PV: Max charging current 6x150w / 24v = 37,5A is C / 9,5 (perfect C / 10)

MMPT Charge Controller: 1160Wc / 24Vmp = 46A + 20% Security

With a daily conso of 1200Wh / j which gives a discharge of 50Ah / 24h is about 25 to 40Ah the night which represents a cycle of discharge of about 10 to 15% of the park beats and gives in these conditions a duration of life of the batt opzs of 15 years to 25 ° c !!!
So :
12 elements 2V Opzs 350Ah C20 1900 €
6 to 8 Panels 24V 190W 1100 €
1 continuous sine wave inverter / charger 2000W (4000wc) 1500 €
(1 MPPT 45 loader to 60A 250 to 600 €)
1 monitor batting 150 €

total <5000 €

conclusion, I proceeded like this with my installation, and it works at the top, ie:
in winter we put out our conso,
in summer, we could afford an evil "air conditioning":, the batt loaded at 13h, the rest is a bonus, so free electric activities all afternoon !!!!!!
here is basically a dimensioning. :

[tonisebantes]

Hello,

and thank you all !!!

I think I have almost everything I need to size optimally my installation ..... thanks to you!

It remains for me to compare and ask for a quote.

Have a good day !