The electricity emitted by photovoltaic solar panels is direct current, which must be converted into alternating current by an inverter. Alternating current is the exact opposite of direct current and must be rectified to become direct current. According to this characteristic, the problem can be satisfactorily solved by transforming the alternating current (to the same power generation voltage as that of solar energy), rectifying and filtering it through a rectifier, and transforming it into electricity identical to that of solar energy. solar energy. Of course, there is one problem that needs to be noted here. The solar power line and the DC power output from the AC rectifier cannot be directly connected in parallel. They must be equipped with an anti-reflux device (i.e. anti-reflux device). device, a rectifier diode corresponding to the working current). This anti diode-reflux can be connected in series on either side of the two power supplies. The two sets of power supplies can be connected in parallel for a long time. Regardless of power failure, they can be automatically switched. Please reward if it is helpful.
What will happen when the solar panel is connected to the power supply?
Are you referring to the IV characteristics of the solar cell: plus the light intensity is higher, the higher the yield. voltage, current and power. Here, omit the 2000 words (it's a long story here, because it involves light intensity, environment and many other factors, so I won't go into detail. If necessary, look at the table of curve IV) The lower limit can be considered zero, because it is very small. The upper limit is applicable to large-scale components to prevent power from beingtoo high and damage components if only one battery is connected. , reflux will occur. If you're experimenting with a single chip, just add a diode, because unidirectional conductivity is basically achievable, but if you have the structure, don't be stupid, buddy
Generally, cell modules Solar panels currently produced are equipped with protection diodes (located in the junction box) to prevent backflow and reverse connection. If reverse current occurs without any protection, the solar cells will be permanently damaged. This will not be visible on the screen. outdoors, the real measurement is power dropping or no output. The degree of damage also depends on the magnitude of the reverse current and the impact on the performance of the solar cells.