Comment on Easy-to-use solar panels are coming, but utilities are trying to delay them
artyom@piefed.social 5 hours agoYou cannot buy a PV inverter in Germany (entire EU really) that doesn’t automatically shut off if it doesn’t detect a frequency to sync against from it’s AC side, unless it can run off-grid in which case it has to disble the grid connection within the same 20ms.
So you can’t buy a grid-connected inverter with off-grid capabilities? Because the inverter has no way to tell the difference between the grid being off, and being off-grid.
ExcessShiv@lemmy.dbzer0.com 4 hours ago
Oh you can buy off grid inverters (or inverters capable of “island mode”). But they are required to be able to automatically disconnect from grid, even if they are never going to be connected to a grid. You can’t buy solar inverters without this for the exact reason that you can connect them to grid.
artyom@piefed.social 4 hours ago
Again, it doesn’t matter what inverter you buy, they can’t tell the difference between off grid and grid off. So if it shuts off when it doesn’t detect voltage, then it won’t work off grid. Which makes it sound like you’re saying off-grid inverters are illegal.
ExcessShiv@lemmy.dbzer0.com 4 hours ago
They detect incoming frequency, not voltage. And yes, they absolutely detect the difference, I have one, it works exactly like this.
artyom@piefed.social 4 hours ago
How do you detect the frequency of voltage that doesn’t exist?