Fundamentals of Electrical Drives

Course Description

General structure of an electrical drive system. Concepts, definitions, motion equations. Drive components, motors, power converters, transmissions, working mechanisms, power supplies, transformers. Classifications and characteristics of drives. Characteristics of DC, AC and universal motors. Characteristics of working mechanisms. Definitions of drives according to IEC standards. Electrical drives with DC, induction and synchronous motors. Drives in steady state. Basics of dynamics. Starting, braking and reversing. Rotational speed control and power saving with the application of controlled drives. Basics of drive protection. Drives in classical and nuclear power plants. Anti-explosive construction of drives. Standards.

General Competencies

The knowledge of properties and characteristics of electrical drives relevant for their application is acquired.

Learning Outcomes

  1. describe general structure of an electrical drive system
  2. define basic electromechanical terms
  3. discuss basic motor characteristic for electrical drive
  4. predict drive behaviour in typical applications
  5. prepare drives parameters acording demands
  6. select motor for electrical drive

Forms of Teaching


Two cycles; 6+5 lectures


Labs, exams


Two exercises.

Laboratory Work

Threee cycles in groups in department laboratory. One of them can be changed with praxis visit.

Internship visits

Electrical drives in industrial plant.

Grading Method

By decision of the Faculty Council, in the academic year 2019/2020. the midterm exams are cancelled and the points assigned to that component are transferred to the final exam, unless the teachers have reassigned the points and the grading components differently. See the news for each course for information on knowledge rating.
Continuous Assessment Exam
Type Threshold Percent of Grade Threshold Percent of Grade
Laboratory Exercises 60 % 20 % 60 % 20 %
Mid Term Exam: Written 20 % 25 % 0 %
Final Exam: Written 20 % 25 %
Final Exam: Oral 30 %
Exam: Written 40 % 30 %
Exam: Oral 50 %

Week by Week Schedule

  1. General structure of an electrical drive system. Concepts, definitions, motion equations. Classifications and characteristics of drives.
  2. Drives in steady state, characteristics of working mechanisms, electrical motor characteristics.
  3. Electrical drives with DC motors, basic characteristics.
  4. Electrical drives with DC motors, starting, breaking, rotational speed control. Traction applications.
  5. Electrical drives with induction motors, basic characteristics.
  6. Electrical drives with induction motors. Starting, breaking, reversing. Slip ring motor. Speed control. Industry application.
  7. Exercise
  8. Interexam
  9. Electrical drives with synchronous motors. Synchronous motors with classical excitation system and permanent magnet starting. Speed control.
  10. Electrical drive dynamic basics. Mechanical transients and power losses. Cutting losses.
  11. Electrical drive with DC, induction and synchronous motors dynamics.
  12. Electrical motor selection for defined electrical drive. Types of typical loads according to IEC 60034-1, basics of motor heating and cooling.
  13. Electrical drives protection, overload and grid disturbances influence, environmental influence. Drives in explosive environment. ATEX standards. Typical application of electrical drives.
  14. Exercise
  15. Final exam

Study Programmes

University undergraduate
Electrical Power Engineering (module)
Elective Courses (6. semester)


Jurković Berislav (1986.), Elektromotorni pogoni, Školska knjiga Zagreb
Gopal K.Dubey (2001.), Fundamental of Electrical Drives, Alpha Science Ltd, Pangabourne, UK
Ned Mohan (2001.), Electric Drives, an integrative Aproach, MNPERE, Minneapolis, USA
Muhamed H.Rashid (2011.), Power Electronics Handbook, Editor-In-Chief, Academic Press,New York

Associate Lecturers


Laboratory exercises


ID 91613
  Summer semester
L1 English Level
L1 e-Learning
26 Lectures
4 Exercises
15 Laboratory exercises
0 Project laboratory

Grading System

86 Excellent
71 Very Good
61 Good
50 Acceptable