Electric Drives

Course Description

Historical development, overview and classification of electric drives. Drives with DC, induction, synchronous, reluctance and stepper motors. Servo drives. Startup and braking techniques. Drive systems. Special purpose drives. Industrial communication. Drive safety functions. Examples of complex drive systems. Selection of drive components. Electromagnetic compatibility. Drive malfunctions.

General Competencies

Knowledge on electric drive components and their interaction within the drive in general. Ability to utilize engineering methods for designing electric drives. Capability to select components for specific industrial drives.

Learning Outcomes

  1. differentiate types of electric drives
  2. define servo drive
  3. compare the techniques of starting and braking operation
  4. analyze drive system
  5. compare industrial communications
  6. analyze safety functions of drives
  7. analyze the electromagnetic compatibility of drives
  8. differentiate types of drive failures

Forms of Teaching

Lectures

Lectures take place in two cycles. The first cylce lasts for 7 weeks with two-hour lectures and the second cylce lasts for 6 weeks with two-hour lectures.

Exams

Written mid-term exam, final oral exam

Exercises

Solving of numerical examples related to the lecture topics.

Seminars

On an example of a concrete electric drive from industrial practice it is required to calculate mechanical requirements of the working mechanism for the given dynamics of the drive, select the adequate drive and driving motor together with the switching and protection equipment, size the braking assembly (chopper and resistor).

Grading Method

Continuous Assessment Exam
Type Threshold Percent of Grade Threshold Percent of Grade
Seminar/Project 0 % 40 % 0 % 40 %
Mid Term Exam: Written 0 % 30 % 0 %
Final Exam: Oral 30 %
Exam: Written 0 % 40 %
Exam: Oral 20 %

Week by Week Schedule

  1. Historical development, overview and classification of electric drives. DC drives.
  2. Induction machine AC drives
  3. Electric drives with synchronous and brushless DC motors
  4. Selection of motor for an electric drive according to duty cycle
  5. Servo drives
  6. Drive systems
  7. Example of a drive - selection of components
  8. Mid-term exam
  9. Examples of complex drive systems
  10. Special purpose electric drives
  11. Industrial communication in electric drives
  12. Electric drive safety functions
  13. Electromagnetic compatibility in electric drives
  14. Failures and elimination of failures in drives
  15. Final exam

Study Programmes

University graduate
Electrical Engineering Systems and Technologies (profile)
Specialization Course (2. semester)

Literature

Ion Boldea, Syed A. Nasar (2006.), Electric Drives, Prentice Hall
Vedam Subrahmanyam (2009.), Electric drives: concepts and applications, McGraw-Hill
Austin Hughes (2006.), Electric Motors and Drives Fundamentals, Types and Applications, Elsevier
Berislav Jurković (1990.), Elektromotorni pogoni, Školska knjiga Zagreb

Associate Lecturers

Exercises

General

ID 91616
  Summer semester
4 ECTS
L1 English Level
L1 e-Learning
30 Lectures
15 Exercises
0 Laboratory exercises
0 Project laboratory

Grading System

88 Excellent
77 Very Good
62 Good
50 Acceptable