.png)
.png)
.png)
How to Design a lowest cos Solar power System ？
We often receive many inquiries from customers about how to configure the solar system. A reasonable configuration can save us money and reduce waste. so today we will discuss with you how to choose the right solar system.
How to Design a Solar power System：
First, we need to confirm how much electricity our home uses every day， what household appliances are in the house, and how long the backup time of the equipment will be.
For example：
1000W solar off-grid system solution
The customer's electricity demand( one day):
|
Equipment |
Power（W） |
Quantity |
Working time(h) |
KWH./ 1day |
|
Lamps |
20 |
2 |
5 |
0.1 |
|
Fan |
100 |
1 |
5 |
0.5 |
|
TV |
50 |
1 |
4 |
0.2 |
|
The total load power is 800W(0.8KWH.) |
||||
Solar panel calculation method : electricity usage/solar lighting time 5 hours/0.8
800W/4/0.8=250W
Solar controller calculation method:solar panel power /system DC voltage
250W/12V=20.8A
Battery calculation method:electricity usage/system DC voltage/0.8
800W/12V/0.8=85AH
According to the type and power of the load, choose:
1.12V30A controller
2.1000W inverter
3.1PCS 250W mono solar panel
4.1PCS 12V150AH lead-acid battery.
For easy to install and carry,made into an All in one cabinet(inverter +solar controller + battery)
5000W solar off-grid system solution
The customer's electricity demand( one day):
|
Equipment |
Power（W) |
Quantity |
Working time(h) |
KWH./ 1day |
|
Lamps |
50 |
4 |
6 |
1.2 |
|
Refrigerator |
100 |
1 |
24 |
1 |
|
TV |
150 |
1 |
4 |
0.6 |
|
Microwave |
1500 |
1 |
1 |
1.5 |
|
Air conditioner |
1500 |
2 |
4 |
6 |
|
The total load power is 10500W(10.5KWH.) |
||||
Solar panel calculation method : electricity usage/solar lighting time 5 hours/0.8
10500W/4/0.8=3281W
Solar controller calculation method:solar panel power /system DC voltage
3281W/48V=68.3A
Battery calculation method:electricity usage/system DC voltage/0.8
10500W/48V（4PCS12V Battery）/0.8=273AH
According to the type and power of the load,choose:
1.48V80A controller
2.5000W inverter
3.9PCS 380W mono solar panel
4.8PCS 12V150AH lead-acid battery.
Because the starting current of the air conditioner is relatively large, the inverter needs to be large
Connection:
Hybrid inverter with MPPT solar controller
