Month: April 2017

Alternator Operation

When we talk about electric motors, the electric energy generated in the alternator is based on the principle that every conductor when crossed by a magnetic field and since there is relative movement between this magnetic field and the conductor is provoked in him an electromotive force (Faraday’s Law)
If a coil rotates in a magnetic field the changes of flow of the north pole and the south pole happen in the rotation, creating in the coil an electromotive alternating sinusoidal force. The alternator, as depicted at first, to fulfill its role (producing electric energy) needs, among others, the following parts: inductor, induced, excitation and movement.
The inductor is excited by a direct current (DC) source that generates a polarized magnetic field in the inductor winding. This inductor gains in its axis a movement of rotation that makes it to act within the armature. With the rotational movement the magnetic field of the inductor suspends the windings of the armature allowing to generate an alternating electric current with characteristic three-phase, or single-phase, according to the construction of the alternator. The frequency is defined as a function of the number of pole pairs and the angular velocity.