EXAMPLE 23.1 The phase sequence of the Y-connected generator in the following figure is ABC. LL 30 EAB V. an EAN 120 V L0° 4Ω Balanced load 4N V bn IN V en 120 V L0, eeeee 120 V L0, 3 0 + NV + ECN EBN ECA Igh B Евс Ice %3D [Ans: 0,= -120° and 0,= %3D a) Find the phase angles 0, and 0,. 120°] b) Find the magnitude of the line voltages. [Ans: 208 V] Find the line currents. [Ans: I= 24 AL - 53.13° = 24 AL -173.13° c) Aa = 24 AL66.87° Cc 2 %3D d) Verify that, since the load is balanced, I= 0.

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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.