Car alternator is a 3 phase generator.

In the car alternator is a 3 phase generator and rectified instead of using dc generator.
Why ac alternator is better than dc generator in any car?

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S.Ghosh

  • May 2nd, 2012
 

An alternator is more reliable than a dc generator as it doesn't have commutators and brushes. 3 phase alternator gives a much smoother output than a single phase one when rectified. Now-a-days alternators have totally replaced dynamos (dc generators) in automobiles.

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No! 3 phase has no rectifier or voltage regulator a car alternator does. DC the voltage and current are suppose to be 180 degrees out of phase from one another or so most people think. Current can go either direction and no affect voltage or the voltages polarity (+/-). In fact since there is no constant load over time current has to change direction in order to keep a constant voltage.

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