4 ms·
When the frequency of the generator is not tied to a mechanical property of it (like the spin of a turbine) - e.g. when the source is solar panels and the AC is
by Florin_Andrei 6y ago
When the frequency of the generator is not tied to a mechanical property of it (like the spin of a turbine) - e.g. when the source is solar panels and the AC is produced via an inverter circuit, what are the remaining frequency-related issues?
I imagine with solar the generator can pretty much pick any frequency it wants, it should not be influenced by load, it could simply stay in sync with the grid no matter what, is that right?
- bob1029 6y agoThe problem with inverters is that they have no inertia to impart on the grid. When you have a gigantic spinning turbine, the amount of power it takes to change its speed is immense. This has huge implications for grid stability when we are talking about renewables. The resolution for this is something called a synchronverter: https://en.wikipedia.org/wiki/Synchronverter https://en.wikipedia.org/wiki/Synchronverter
- beckingz 6y agoMost cheaper solar panel inverters are synced to the grid and require the external 60hz wave to output power, resulting in solar panels that will not provide energy without being connected to the grid.
- pjc50 6y agoFrequency is really the "adaptation parameter" of the grid, rather than voltage. For fast frequency response, the requirement is to "push" the frequency faster by outputting more energy. Imagine being in a team of people pushing a car along a road at a steady speed (frequency). One of your colleagues trips over and stops pushing. You then can't maintain the speed without putting in more effort.