I have a gigantic Spice model. A 25 millisecond sim takes about a half hour to run.
This is the equivalent FADEC regulator that I drive, a small part of my overall simulation. It's a terrible load. Motorcycles often have a similar reg, and some cars have permanent-magnet alternators and do this too.
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We spun up some jet-engine-type alternators to see how they behave. They are poorly specified; even the basics are considered to be top-secret by the makers.
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