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Basic Electrical and Electronics Engineering
book

Basic Electrical and Electronics Engineering

by S. K. Bhattacharya
August 2011
Beginner content levelBeginner
724 pages
20h 32m
English
Pearson India
Content preview from Basic Electrical and Electronics Engineering

8

Three-phase Induction Motors

TOPICS DISCUSSED
  • Basic principle of a three-phase induction motor

  • Constructional details

  • Rotating magnetic field

  • Synchronous speed

  • Slip speed

  • Rotor-equivalent circuit

  • Rotor current

  • Rotor frequency

  • Power-flow diagram

  • Torque

  • Torque-slip characteristics

  • Effect of change of rotor circuit resistance on torque-slip characteristics

  • Starting torque

  • Condition for maximum torque

  • Starting

  • Speed control

  • Losses

  • Efficiency

  • Applications

8.1 Introduction

Three-phase induction motors are used in many industrial applications such as a drive motor. These motors are very rugged, and hence there is virtually no maintenance required. Only three-phase supply is required for the stator. No supply is to be provided to the rotor. ...

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Publisher Resources

ISBN: 9788131754566