The solar AC power generation system is composed of a solar panel, a charging controller, an inverter, and a battery; a solar DC power generation system does not include an inverter. In order for the solar power generation system to provide sufficient power for the load, it is necessary to reasonably select each component according to the power of the consumer. The following uses the output power of 100W for 6 hours per day as an example to introduce the calculation method:
1. First calculate the number of watt-hours consumed per day (including the loss of the inverter): If the inverter conversion efficiency is 90%, when the output power is 100W, the actual output power should be 100W / 90 % = 111W; if it is used for 5 hours per day, the power consumption is 111W * 5 hours = 555Wh.
2. Calculate the solar panel: Calculate according to the effective daily sunshine time for 6 hours, and consider the charging efficiency and the loss during the charging process. The output power of the solar panel should be 555Wh / 6h / 70% = 130W. 70% of this is the actual power used by the solar panel during the charging process.
