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Electrical Technology, Vol2: Machines and Measurements, 1/e by S. P. Bali

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40

Induction Motors (Three Phase)

OBJECTIVES

In this chapter you will learn about:

  • Rotating magnetic fields
  • Direction of rotation
  • Slip and its effect
  • Construction of a three-phase induction motor
  • WRIM and SCIM
  • Losses and efficiency
  • Maximum power
  • Induction motor characteristics
  • Starting techniques for induction motors
  • Induction motor parameters
  • Simple problems on the above topics
  • Induction motor with squirrel cage motor
equation
40.1  INTRODUCTION

The three-phase induction motor has a simple yet exceedingly robust construction which is comparatively cheap to manufacture. It also has good operating characteristics that make it a suitable drive for ...

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