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

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42

Specialized Motors

OBJECTIVES

In this chapter you will learn about:

  • The reluctance principle
  • Reluctance-start induction motors
  • Hysteresis motors
  • Reluctance torque and hysteresis torque
  • Stepper motors for precise positioning of mechanical systems
  • Types of stepper motors and their applications
  • Step angle per input pulse
  • Permanent magnet stepper motors
  • Variable-reluctance stepper motors
  • Hybrid stepper motors
  • Linear induction motors
  • Unrolling conventional squirrel-cage induction motor to produce a linear induction motor
  • Universal motors
  • Simple problems on the above
image

Permanent magnet stepper motor

42.1  INTRODUCTION

A.c. and D.c. machines ...

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