How to make an suitable off-grid solar system solution?
step 1.collecting basic datas based on simple questions.
What kind of home appliance and quantity do you want to load?
How much power of each appliance?
How many hours do you want to run each appliance by solar power everyday?
How many backup days you want to run by solar system?
Step 2. work out total power consumption.
The more exact&complete datas you collect,the more suitable solar system solution it will be.
Step 3. Calculating out battery solution
Battery=14980wh*1.3(power loss in process)/12v=1622ah
Battery solution according to calculation: 200Ah battery 8pcs
Step 4. Calculating out solar panel solution
Solar panel=(14980wh*1.3*1.3)/8h(sun shine time)=3164w
Solar panel solution according to calculation: 200w solar panel/16pcs
Step 5. Calculating out solar Inverter size
Inverter: Choose according to total power.Total power is 1160w,suggest using 1500w inverter to leave some
space,reduce the inverter pressure.
Considering solar inverer voltage 24V for 1500W in priority.
Step 6. Calculating out conteroller size
Controller: voltage 24v is fixed according to solar Inverter.
Controller Ampere=3200w solar panel/24V=133.3A
Controller reference solution: 24V150A
Max connecting solar panel:3600w
step 7: choose proper solar&battery connection cable, solar panel bracket and protection switch.
step 8. consider about solar panel&solar battery connection
1.Battery voltage should connect into 24V,2pcs 12V battery connect in series.
2.Solar panel voltage should connect into 36V,2pcs 18V solar panel connect in series.
Basic theory tips
1.controller,battery,inverter voltage is the same voltage.
2.Best charging connection way is solar panel voltage is higher 1.5 time than battery.
3.Different connection way could change the solar panel and battery voltage.
4.Max connection solar panel watts power=controller ampere*controller voltage
5.Normally the inverter power should be beyond the total appliance power,
it will reduce the inverter pressure and pro-long inverter life.
6.Solar panel decide charging time for battery,battery decide how many hours could
If you want to make a suitable and professional solar system solution,welcome contact ESOLAR Inc.