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/diy/ - Do It Yourself


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>> No.2810839 [View]
File: 27 KB, 987x468, sol.jpg [View same] [iqdb] [saucenao] [google]

Solar panels are producing power basically randomly when it's not perfectly sunny, pic related is a cloudy, rainy day on a 5kW array. You absolutely need to buffer this for almost every application somehow, and the buffer is the battery. The type of inverters you want are simply not designed to work without a battery. The only inverters that work without a battery are on-grid, which are always connected to the grid mains power, and basically use the grid as a buffer (subject to local regulations).
"Solar generators" like the ecoflow include everything in one box so it functions similar to a regular gas generator, that you just plug shit into the outlet and it werks. They don't actually generate anything unless you connect solar panels, it's just a marketing gimmick.
>[gas] generators do function as storage
The gas generator is constantly offering the potential to deliver full power, the motion energy of the spinning parts stores enough power to act as a buffer for 1-2 seconds when you turn on a big load (the magnetic field draws power from the kinetic energy of the spinny parts), and in those 1-2 seconds, the power output of the gas engine ramps up. Disadvantage is
>loud, have to keep it running the entire time you're using power
>smells bad
>uses gas, which costs money
>can't run indoors unless you run exhaust
>generally can be considered less reliable than a decent battery system
Advantage is that you are much less likely to ever run out of power, a solar/battery system can run out of juice if you use a lot of power or get bad weather. Larger off-grid solar systems sometimes use gas generators to charge the battery if weather is bad.

Gas generators don't usually need inverters since they already produce AC, as given by the windings of the generator. There exist "inverter gas generators" but that's more of a performance enhancement thing.

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