Maximum power tracking is a closed loop system. DCDC is a switching power supply. Output voltage and current are adjustable. Output power is equal to voltage times current. and voltage are adjusted, the voltage will also change accordingly. Look at the changes in the output power, for example, once the current is adjusted down, the output power becomes larger, it will think the setting is correct, then adjust it again. until it finds the maximum point. It is dynamic
The relationship between the maximum output voltage of the power point and the open circuit voltage of solar cells under different lighting conditions
The maximum power photovoltaic panels can reach 300W/unit, generally the conventional power is 230W, some modules have 72 cells and some modules have 60 cells.
The output current dA solar panel is linked to the nominal voltage. The rated output current of a 12V/100W solar panel is: 100W÷12V＝8.33A; The rated output current of a 24V/100W solar panel is: 100W ÷ 24V＝4.17A.
The maximum charging current of a 12V 100W solar panel is about 9 A. The longest effective lighting time in Lhasa per day is about 5.5 hours. In other regions it is calculated at 4 hours, which means it can charge more. that 4h*9A=36Ah, even if it is 40Ah.
Detailed information:
Crystalline silicon solar cells have relatively low equipment costs, but consumption and costs ofcells are high, but the photoelectric conversion efficiency is also high, which makes them suitable for generating electricity under outdoor sunlight; have relatively low equipment costs. It is higher, but the battery consumption and cost are very low, but the photoelectric conversion efficiency is more than half of that of crystalline silicon cells, but the low light effect is very good and can also generate. electricity under ordinary light, like solar cells in calculators.
Reference source: Baidu Encyclopedia - Solar panel
If the light source is solar radiation and the solar radiation remains unchanged, the photovoltaic solar cell The voltage conversion output and Current is determined by the load. For example: if the power of the light source is 1,000 W/M2 (solar radiation per meter becaused is 1 kilowatt), the output power of a monocrystalline silicon solar wafer with a total area of 1 square meter is 1 kilowatt. 170 W, and the relationship between voltage and current is P = IV,