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EcoFlow’s $200 PowerStream is so clever, you might buy a $4,000 solar generator (www.theverge.com)

submitted 5 months ago by [email protected] to c/[email protected]

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Title reads like at ad, but this is a new way to reach energy independence. I actually have a small EcoFlow device and it’s pretty good for the price.

I hope this tech can be made available in the US soon.

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[–] [email protected] 1 points 5 months ago* (last edited 5 months ago) (1 children)

I think I get that, thanks. So an Island grid is less stable and could cause itself damage if two microinverters say are trying to sync up to each other vs a beefy, stable main grid?

So how does a backup battery system work when islanded? Typically also at 52Hz?

Or can it go into a 60Hz beefy mode?

It would be nice to get all the little island solar inverters working when the grid goes down!

[–] [email protected] 1 points 5 months ago (1 children)

I'm guessing the commenter above is in the EU and operating at 50Hz normally, so running at 60Hz wouldn't be a great idea. A backup battery and such operate in the same way when islanding.

[–] [email protected] 1 points 5 months ago* (last edited 5 months ago) (1 children)

Yep. And in my case, the backup battery is connected to another DC input on the inverter and the inverter pretty much manages everything. As I understand the documentation, there is no other way to use solar AND a battery at the same time as a power source for islanding. Switching over manually with a short disruption in-between is always possible of course, as is charging an AC coupled battery from an islanding solar inverter.

@[email protected]

[–] [email protected] 1 points 5 months ago

IIRC some inverters are able to sync up with alternative power sources, but the documentation is extremely limited and seems to be reserved mostly for large-scale systems. I know my Solaredge system has slowly been implementing using both at the same time, but the documentation is pretty unclear as to how this works. I know at the very least it'll allow you to use a 2-wire start to kick a standalone generator on when the batteries are low, but don't know much else about how it's currently set up