How does a gas generator make electricity?

Question by www.dimitrios-art.com: How does a gas generator make electricity?
Okay, I know there is a generator /electro motor in there, but it’s not a permanent magnet motor, then if there is no existing magnetic field, and there is no battery on a generator, how does it make the coils energized? The rotor and stator are both windings, or, is there a slight small magnet in the rotor to give that first bit of current to make more current as the generator gets to full speed?

Best answer:

Answer by JH
It may ether small magnets or some power from the power output used to fire the engine.

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2 thoughts on “How does a gas generator make electricity?

  1. If you are sure the generator in question does not have a permanent magnet rotor, then there will be some residual magnetism that, as you said, starts the process going.

  2. You very astutely answered your own question. Generators self-excite with the residual magnetism in the rotor. In some cases, especially if the generator has been rebuilt, they may loose the residual magnetism and will fail to self-excite and generate. In this case, you must flash the field, which is accomplished by connecting a battery momentarily across the field coil to magnetize the field core.

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