This module introduces the student to the fundamentals of alternating current motors and AC variable speed control systems. In addition to the basic introduction motor, the module also covers servo-, universal and synchronous motors. The principles of variable frequency drives and their control circuits are presented emphasizing practical applications and troubleshooting techniques. Theoretical areas of study include single-phase and shaded-pole induction motors.
Upon completion of this module the student will be able to:
- List the three classifications of single-phase motors.
- Explain the basic operating principle of the induction motor.
- Define synchronous speed and slip.
- Describe the difference between starting torque and breakdown torque.
- Name the three types of induction motors.
- List three advantages of universal motors over induction motors.
- Define speed regulation.
- Describe the difference between pulse-width modulation, pulse-amplitude modulation and pulse width control.
- Explain the difference between a cycloconverter and an inverter.