A 3phase 600 kVA alternator has a rated terminal voltage of 3300V (line value). The stator winding is star connected and has a resistance of 0.37 phms per phase and a synchronous reactance of 4.3 ohms per phase Calculate the voltage regulation for full load at (i) unity (ii) 0.8 lagging.

A 3phase 600 kVA alternator has a rated terminal voltage of 3300V (line value). The stator winding is star connected and has a resistance of 0.37 phms per phase and a synchronous reactance of 4.3 ohms per phase Calculate the voltage regulation for full load at (i) unity (ii) 0.8 lagging.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.8MCQ

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Concept explainers

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.

Question

A 3phase 600 kVA alternator has a rated terminal voltage of 3300V (Iine
value). The stator winding is star connected and has a resistance of 0.37
phms per phase and a synchronous reactance of 4.3 ohms per phase
Calculate the voltage regulation for full load at (i) unity (ii) 0.8 lagging.

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