About Photovoltaic inverter anti-backflow device
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4 FAQs about [Photovoltaic inverter anti-backflow device]
How does an inverter achieve anti-backflow?
Upon detecting current flow towards the grid, the inverter will reduce its output power until the countercurrent is eliminated, thereby achieving anti-backflow. It is important to note that the CT and meter themselves do not have anti-backflow capabilities; they simply collect data to enable the inverter to adjust its output accordingly.
How to use anti-backflow function in ECU-C local network interface?
Anti-backflow function can be opened or closed in the ECU-C Local Network Interface like figure 3.In this interface you can also set power limit from 0 to a certain positive number. The power limit means that anti-backflow function works only when the backflow occurs and the backflow power is greater than the power limit.
Why is anti-backflow referred to as countercurrent?
Since this current flows in the opposite direction to the conventional one, it is referred to as “countercurrent.” Q: Why is anti-backflow needed? A: There are several reasons to prevent excess electricity generated by the PV system from flowing into the grid:
What happens if a partial inverter is installed?
Another opportunity for back feed to occur in such partial installs is if the inverter trips. In such a case, the voltage on the DC bus will collapse, but the SPOTs will continue to load the strings to which they are attached.