A synchronous motor with negligible armature resistance operates at a nominal frequency of 25 degrees. If the frequency of the supply voltage of the motor is increased by 15% while keeping other parameters constant, what will be the new load angle?

A synchronous motor with negligible armature resistance operates at a nominal frequency of 25 degrees. If the frequency of the supply voltage of the motor is increased by 15% while keeping other parameters constant, what will be the new load angle?

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter54: Variable-frequency Mechanical Drives

Section: Chapter Questions

Problem 4SQ

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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

A synchronous motor with negligible armature
resistance operates at a nominal frequency of
25 degrees. If the frequency of the supply
voltage of the motor is increased by 15% while
keeping other parameters constant, what will
be the new load angle?

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