Determine the synchronising power and torque per mechanical degree of rotor displacement of a two-pole, 50 MVA, 11 kV, star-connected alternator, if the synchronous impedance is (4,181 + j39,78)%. The alternator operates at full load at a power factor of 0,8 lagging.

Determine the synchronising power and torque per mechanical degree of rotor displacement of a two-pole, 50 MVA, 11 kV, star-connected alternator, if the synchronous impedance is (4,181 + j39,78)%. The alternator operates at full load at a power factor of 0,8 lagging.

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter39: Synchronous Motor Operation

Section: Chapter Questions

Problem 14SQ: Induction motors and welding transformers require magnetizing current, which causes a. lagging power...

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Concept explainers

Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.

Question

Determine the synchronising power and torque per mechanical degree of rotor displacement

of a two-pole, 50 MVA, 11 kV, star-connected alternator, if the synchronous impedance

is (4,181 + j39,78)%. The alternator operates at full load at a power factor of 0,8

lagging.

Branch of science that deals with the stationary and moving bodies under the influence of forces.

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Step 1: Given

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Step 3: Solution

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Step 4: Finding Generated EMF per phase

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Step 5: Finding Synchronising Power

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Step 6: Synchronising Torque

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