A single-phase alternator produces at no-load an electromotive force E-230 V of frequency f= 50 Hz. The rotor rotates at a speed n=1000 r.p.m. The synchronous impedance of the stator winding is Z-1.5 Q and its resistance is negligible. 1) Calculate the number of poles of the alternator. 2) Calculate the reactance (X.) of the stator winding. 3) Calculate the flux per pole (0) knowing that the number of stator conductors is 120 and Kapp's coefficient is 2.1

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Synchronous Generator

In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.

Salient Pole Rotor

Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.