MODULE DETAILS

Module 6:     Motor Control

Nominal duration: 4 weeks (48 hours total time commitment)

This time commitment includes the preparation reading, attendance at each webinar (1 hour plus 15-30 minutes for discussion), and the time necessary to complete the assignments and further study.

MODULE PURPOSE

This module deals with the theory of operation, as well as the control, of Alternating Current (AC) and Direct Current (DC) motors as used in the mining industry.

SUMMARY OF LEARNING OUTCOMES

1.    Examine and discuss the essentials of AC motors

2.    Examine and discuss the essentials of DC motors

3.    Examine and discuss the operation of Variable Speed Drives (VSDs)

4.    Examine and discuss other motor control methods and drive components



Learning Outcome 1

Examine and discuss the essentials of AC motors

Assessment Criteria

1.1

Examine 3-phase AC motor fundamentals

1.2

Discuss the construction and rating aspects of:

(a) squirrel cage motors

(b) wound rotor induction motors

1.3

Discuss the construction and rating aspects of 3-phase synchronous motors

1.4

Discuss the application of AC motors in mining

 


Learning Outcome 2

Examine and discuss the essentials of DC motors

Assessment Criteria

2.1

Examine DEC motor fundamentals

2.2

Discuss the construction and rating aspects of:

(a) brushed

(b) brushless DC motors

2.3

Discuss the application of DC motors in mining


Learning Outcome 3

Examine and discuss the operation of Variable Speed Drives (VSDs)

Assessment Criteria

3.1

Describe the basic concepts VSDs

3.2

Distinguish between mechanical, hydraulic and electrical VSDs

3.3

Examine the use of power electronic converters

3.4

Discuss the protection of VSD components

3.5

Outline the requirements of VSD control systems



Learning Outcome 4

Examine and discuss other motor control methods and drive components

Assessment Criteria

4.1

Discuss the use of motor gearboxes

4.2

Discuss motor brakes

4.3

Explain how motor control is achieved with:

(a) phase vector drives

(b) direct torque controllers

(c) SCR (thyristor) drives

(d) PWM (chopper) drives

(e) Ward-Leonard control

4.4

Discuss the concept of Motor Control Centers (MCCs)


Delivery mode

A combination of asynchronous and synchronous e-learning delivery comprising a judicious mix of interactive online web conferencing, simulation (virtual labs) software, remote online labs, online videos, PowerPoint slides, notes, reading and study materials (in PDF, HTML and Word format) accessed through the Moodle Learning Management System (LMS).

Software/Hardware Used

Software

  • VPLabs

  • update checked 02/09/2019 - N/A

Hardware

  • Remote Labs