Rotating Machines

Name: Rotating Machines
Rating: 4.5 (76 reviews)

AC & DC Motors and Generators

Created byGraham Van Brunt P. Eng., B.Sc.

Last updated 2/2021

English

English [Auto],

What you'll learn

The Theory of Electrical Rotating Motors and Generators.

Course content

1 section • 8 lectures • 7h 29m total length

Introduction to Rotation Machines6:28
Explore rotating machines, including DC and AC motors and generators, with emphasis on synchronous and induction machines, single- and three-phase motors, torque, power, and parallel power systems.
01 - Review of Machinery Principles42:54
Explore the fundamentals of rotating machines, covering motors and generators, torque and power, angular speed, and magnetic fields, flux density, and hysteresis in ferromagnetic cores.
02 - DC Machines1:10:34
Explore how the right hand rule and cross product govern forces in linear and rotating dc machines, and how commutation with brushes yields steady dc output.
03 - AC Machinery Fundamentals1:48:43
Explore the fundamentals of ac machines, distinguishing synchronous and induction machines, and explain how rotating magnetic fields, rotor types, and slip drive starting torque and speed in ac motors.
04 - 3 Phase Induction Motor1:07:09
Explore how a three-phase induction motor creates a rotating magnetic field in the stator, induces rotor currents, and converts electrical energy to mechanical energy, with speed tied to frequency.
05 - Synchronous Generator/Motors (part 1)1:13:49
Describe how synchronous generators convert mechanical power to three-phase ac, including rotor types, excitation, and armature reaction, and show how field control regulates terminal voltage.
06 - Synchronous Generator/Motors (part 2)47:59
Learn how synchronous generators are paralleled to share load on an infinite bus, maintain phase sequence and frequency, and adjust via governors and exciters for stability.
07 - Synchronous Generator/Motors Prob-Sol.key32:01
This chapter solves problems on synchronous generators, calculating speed and field current to maintain 480-volt terminals under no-load and loaded lagging or leading power factor, and evaluating efficiency.

Requirements

An understanding of electricity and mathematical equations.

Description

This course will focus on the fundamentals of rotating electrical equipment. This will include AC and DC motors and generators. Starting with the basic theories required and finishing up with some example problems. Starting with a simple liner DC machine the course takes you through rotating DC motors and generators, Induction motors and finishing with synchronous motors and generators. You will find several examples of sample problems with the final chapter dedicated to just that.

Upon completion of this course, the student will have a working knowledge of DC motors and generators including the commutation elements. This includes three-phase and single-phase induction motors and how synchronous generators work alone and connected to large systems such as the North American Grid.

The requirements going into this course are a basic understanding of electrical circuits such as Ohm’s law & Kirchhoff’s law and working knowledge of mathematics including equations. However, every effort has been made to keep the calculations as simple as possible complete with detailed explanations related to all calculations. The student will find the videos crisp, clean and very detailed with all text typed not handwritten and illustrations crafted in Keynote or PowerPoint illustrations that use animation to carry the ideas across.

This course is intended both for the novice as well as a review for those who have previously studied the subject matter.

Who this course is for:

Electrical Engineers, Technologists and Electrical Maintainers and Operators