Re:Microgrids Are Giving Power to the People
by hpb42 on Friday August 11, 2023 @12:39PM
(#37090692)
> A flywheel can provide frequency stabilisation, or it can provide energy storage, but it can't do both at the same time.
Ah, that's a good point to know. I thought flywheels could to both at the same time. Do they also help with keeping the load resistive? I guess their high inertial mass would add some inductance, which is how they stabilize the frequency?
Do you have some resources about this topic to share to a layman like me?
To provide frequency stabilisation is must be synchronised to the mains (eg run at a constant speed), while to provide storage it must be non-sychronised, eg slow down when loaded, and speed up when charging.
Of course you can use non-synchronous flywheels with synchronised inverters, but then you can do that with batteries, wind-generators, etc.