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Alternator: Voltage generation

 

The elementary 3-phase salient 2-pole synchronous generator has a stator equipped with 3 coils displaced 120° from each other; although shown as concentrated, they actually are distributed.When the rotor is excited with dc and rotated, the resultant field will also rotate so that sinusoidal voltages are generated in the 3 stator phases, displaced 120° in time and having a frequency directly related to rotor speed.

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© M. Riaz