ECE 252 Introduction to Electrical Engineering

Module 19. DC and AC Machines


Course Objectives/Outcomes: Students who complete this course will be able to:

Module Objectives/Outcomes: Students who complete this module will be able to:

  1. Identify motor parts (rotor, stator, armature, field) on DC and AC motors.
  2. Select an appropriate motor for a given application.
  3. Explain how back EMF affects motor speed and torque.
  4. Consider motor losses (windage, friction, hysteresis, copper, eddy currents) in motor calculations.
  5. Calculate the synchronous speed of a motor based on number of motor poles and/or loaded motor speed.
  6. Sketch and label torque-speed curves for common motor types.
  7. Calculate power, voltage, current, efficiency, and torque from motor nameplate data.
  8. Specify the differences between single-phase and three-phase induction motors.

Assignment:

Select an option:

Reading

* Lesson 19 DC and AC Machines

Streaming Videos

* Video L19-1 Introduction to Motors. [Module Objective 1]



* Video L19-2 Motor Tables. [Module Objective 2]



* Video L19-3 Losses In Motors. [Module Objective 4]



* Video L19-4 Torque and Power. [Module Objective 6]



* Video L19-5 Torque-Speed Curves. [Module Objective 6]



* Video L19-6 Back EMF. [Module Objective 3]



* Video L19-7 Series Motor Characteristics. [Module Objectives 1, 2, and 6]



* Video L19-8 Induction Motors. [Module Objectives 1, 2, and 6]



* Video L19-9 Selecting an Induction Motor. [Module Objectives 1, 2, and 6]



* Video L19-10 Synchronous Motors. [Module Objectives 1, 2, and 6]



* Video L19-11 Single-phase Induction Motors. [Module Objectives 1, 2, 6 and 8] 



* Video L19-12 Stepper Motors. [Module Objectives 1 and 2]



* Video L19-13 Brushless DC Motor. [Module Objectives 1 and 2] 



* Video L19-14 Variable Reluctance Motor. [Module Objectives 1 and 2]



* Video L19-15 Motor Nameplate Data. [Module Objectives 5 and 7]



* Video L19-16 Review. [Module Objectives 1-8]



Videos for Download

* Video L19-1 Introduction to Motors. [Module Objective 1]
* Video L19-2 Motor Tables. [Module Objective 2]
* Video L19-3 Losses In Motors. [Module Objective 4]
* Video L19-4 Torque and Power. [Module Objective 6]
* Video L19-5 Torque-Speed Curves. [Module Objective 6]
* Video L19-6 Back EMF. [Module Objective 3]
* Video L19-7 Series Motor Characteristics. [Module Objectives 1, 2, and 6]
* Video L19-8 Induction Motors. [Module Objectives 1, 2, and 6]
* Video L19-9 Selecting an Induction Motor. [Module Objectives 1, 2, and 6]
* Video L19-10 Synchronous Motors. [Module Objectives 1, 2, and 6]
* Video L19-11 Single-phase Induction Motors. [Module Objectives 1, 2, 6 and 8]
* Video L19-12 Stepper Motors. [Module Objectives 1 and 2]
* Video L19-13 Brushless DC Motor. [Module Objectives 1 and 2]
* Video L19-14 Variable Reluctance Motor. [Module Objectives 1 and 2]
* Video L19-15 Motor Nameplate Data. [Module Objectives 5 and 7]
* Video L19-16 Review. [Module Objectives 1-8]

Bonus Material

* Motors (Power Point)

Tutorial

* Tutorial 19 DC and AC Machines. [Module Objectives 1-8]

Homework

* Homework 19. DC and AC Machines. [Module Objectives 1-8]

Practice Quiz

* Practice Quiz 19. [Module Objectives 1-8]
* Practice Quiz 19 Solution. [Module Objectives 1-8]