3 ms·
This (unfortunately, commonly-held) misbelief is solidly in Not Even Wrong territory. Parallel AC sources with inductive impedance are naturally synchronized t
by brandmeyer 10y ago
This (unfortunately, commonly-held) misbelief is solidly in Not Even Wrong territory. Parallel AC sources with inductive impedance are naturally synchronized to each other. A phase error between them produces a torque error that is naturally self-correcting.
- Animats 10y agoIn a power grid, the AC generators are basically synchronized and in phase. But there's some tweaking on phase to control which way power is shipped. Inductors and capacitors are switched in and out to induce small phase shifts and drive power in the desired direction. If you want to know more about this, there's online training called "PJM 101", from the power grid operator for the northeastern US. HVDC systems are connected to AC systems using rectifiers and inverters. An interconnect point is a switching power supply. A very large switching power supply. The output DC isn't perfectly clean DC and the output AC isn't a clean sinusoid; converters have to approximate and try to filter. Wikipedia has a nice explanation, with good pictures.[1] [1] https://en.wikipedia.org/wiki/HVDC_converter https://en.wikipedia.org/wiki/HVDC_converter