A 12-pole, three-phase, star connected alternator has 180 slots and 12 conductors per slot.(i) Define yand g and calculate their values.(ii) Calculate the necessary flux per pole to generate 3300 V at 50 Hz on open circuit. Take Ks-1..(iii) Calculate the o/c line voltage if the machine is connected to a 60 Hz supply with the same excitation.Write all the formulae that you use in your solution.Note: Read the lecture notes before attempting this question.

Given Pole P=12 Number of slots= 180 f=50 Hz conductors per slot =12 3 phase, star connected…

A 12-pole, three-phase, star connected alternator has 180 slots and 12 conductors per slot. (i) Define yand g and calculate their values. (ii) Calculate the necessary flux per pole to generate 3300 V at 50 Hz on open circuit. Take Ks=1.. (ii) Calculate the o/c line voltage if the machine is connected to a 60 Hz supply with the same excitation Write all the formulae that you use in your solution. Note: Read the lecture notes before attempting this question.

A 12-pole, three-phase, star connected alternator has 180 slots and 12 conductors per slot. (i) Define yand g and calculate their values. (ii) Calculate the necessary flux per pole to generate 3300 V at 50 Hz on open circuit. Take Ks=1.. (ii) Calculate the o/c line voltage if the machine is connected to a 60 Hz supply with the same excitation Write all the formulae that you use in your solution. Note: Read the lecture notes before attempting this question.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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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 12-pole, three-phase, star connected alternator has 180 slots and 12 conductors per slot.
(i) Define yand g and calculate their values.
(ii) Calculate the necessary flux per pole to generate 3300 V at 50 Hz on open circuit. Take Ks-1..
(iii) Calculate the o/c line voltage if the machine is connected to a 60 Hz supply with the same excitation.
Write all the formulae that you use in your solution.
Note: Read the lecture notes before attempting this question.

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