Motors & Control Circuits

This module will focus on the principles of DC motors and the various types used in industry. The student will learn the fundamentals of speed control including dynamic and regenerative braking. It also introduces the student to electronic speed control of DC motors. In addition, the fundamentals of alternating current motors and AC variable speed control systems are presented. The principles of variable frequency drives and their control circuits are discussed in detail.

Learning Outcomes:

  • Explain the purpose of a commutator in DC motors.

  • Differentiate between a stator and an armature.
  • Define torque and counter emf.
  • Name three typical dynamo configurations.
  • Explain the basic operating principle of servomotors.
  • Explain how Pulse Width Modulation is used in speed control.
  • Define the terms dynamic and regenerative braking.
  • Describe the operating principles of an AC induction motor.
  • List three advantages of universal motors over induction motors.
  • Differentiate between a cycloconverter and an inverter.
  • Explain the basic operation of a variable frequency drive.