The solar AC power generation system is composed of solar panels, charge controllers, inverters and batteries; the solar DC power generation system does not include the inverter. In order to make the solar power generation system provide enough power for the load, it is necessary to select the components reasonably according to the power of the electrical appliances.
Let's take 100W output power and use it for 6 hours a day as an example to introduce the calculation method:
1. First, calculate the watt-hours consumed per day (including the loss of the inverter): if the conversion efficiency of the inverter is 90%, then when the output power is 100W, the actual required output power should be 100W/90 %=111W; if it is used for 5 hours a day, the power consumption is 111W*5 hours=555Wh.
2. Calculation of solar panels: Calculated on the basis of 6 hours of effective daily sunshine time, and considering the charging efficiency and loss during charging, the output power of solar panels should be 555Wh/6h/70%=130W. Among them, 70% is the actual power used by the solar panel during the charging process.
