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Electrical Machines and Electric Drives SA401-15

ECTS 6 | P 45 | A 15 | L 15 | K 0 | ISVU 149367 | Academic year: 2020./2021.

Course groups

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Course lecturers



Present the basic laws and phenomena the operation of electrical motors is based upon. Understand the construction, mode and principle of electrical machines. Display the electromechanical drive control and regulation techniques. Introduce students to basic concepts related to the conversion of mechanical energy into electrical and vice versa. Explain the mode and types of electrical machines. Introduce students with the basics of block presentation. Explain the analysis of the electromechanical drive. Understand basic numerical calculations with DC, asynchronous and synchronous machines. Demonstrate the connection of control and measuring devices when testing electrical machines. Enable students to measure electrical and mechanical value.

Conditions for enrollment

The necessary requirements to enrol in the second year of the studies.

Course description

Fundamentals of mechanical energy conversion into electrical energy and vice versa. Magnetic circuit of electric machines. Machine models for DC voltages and DC current. Machine models for AC voltages and AC current. Magnetomotive force of alternating current and polyphase excitation. Rotating magnetic field. Developed torque and induced voltage. Synchronous machine. Basic properties and types. Physical processes and equivalent circuit. Output curve of a synchronous motor. Induction machine. Basic properties and types. Physical processes. Equivalent circuit and speed-torque curve. Single-phase induction motor. DC machine. Basic properties. Physical processes. Types and characteristics. Small electric machines. Designs, parameters and usage. Electric drive. Basic principles, structure and system. Drive states, characteristics of operating machines and motors, static stability. Electromechanics of drives. Static characteristics, motor operation, separately and shunt-connected excited DC, synchronous and asynchronous motors. Converters for DC motors. Converters for AC motors. Speed control of AC and DC motors. Regulated electric motor drives. Automation of electric drives. Servo drives. Motor selection. Drive protection. Maintaining electric motor drives. Laboratory exercises: introduction into the work in the electric machines and drives laboratory. Synchronous generator. Basic data, winding terminal markings, winding resistance. No-load test. Short-circuit test. Induction motor. Basic data, winding terminal markings, winding resistance. No-load test. Short-circuit test. DC machine. Basic data, winding terminal markings, winding resistance. Output curves of separately-excited DC generator and motor.

Knowledge and skills acquired

Knowledge of theoretical fundamentals, performances and modes of operation for electrical machines and electric drives.

Teaching methods

Lectures (3 hours per week), problem solving (1 hour per week), laboratory practice (1 hours per week) Lecturing by means of PowerPoint presentations, problem solving and laboratory practice with active participation of students by continuous assessment of the acquired knowledge.

Student requirements

Defined by the Student evaluation criteria of the Faculty of Electrical Engineering, Computer Science and Information Technology Osijek and paragraph 1.9

Monitoring of students

Defined by the Student evaluation criteria of the Faculty of Electrical Engineering, Computer Science and Information Technology Osijek and paragraph 1.9

Student assessment

Seminar during the course and oral examination for students that satisfy by evaluation (seminar, problem solving and laboratory practice scoring), written and oral examination for other students.

Obligatory literature

1. 1 Mandić, I; Komljenović, V; . Pužar, M. Sinkroni i asinkroni električni strojevi Zagreb: Tehničko veleučilište u Zagrebu, ISNB: 975-953-7048-26-6, 2012.

2. 2 Krause, Paul C; Wasynczuk, Oleg; Sudhoff, Scott D. Analysis of Electric Machinery and Drive Systems Wiley-IEEE Press, 2013., ISBN 978-1-118-02429-4

3. 3 R. Wolf Osnove električnih strojeva Školska knjiga, Zagreb, 1985.

4. 4 B. Jurković Elektromotorni pogoni Školska knjiga, Zagreb, 1990.

5. 5 Kaltjob, P.O.J. Mechatronic Systems and Process Automation: Model-Driven Approach and Practical Design Guidelines, 1st Edition CRC Press, Taylor & Francis group, London, 2018.

6. 6 De Doncker, R., Pulle, D.W.J., Veltman, A. Advanced Electrical Drives, Analysis, Modeling, Control Springer, London, 2011.

7. 7 Werner, Leonhard Control of electrical drives Springer-Verlag, Berlin, 2001

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Recommended additional literature

1. 1 Miller, T.J.E. Electronic Control of Switched Reluctance Machines Newnes, Boston, 2001.

2. 2 Moreton, P. Industrial Brushless Servomotors Newnes, Boston, 2005.

3. 3 N. Mohan,T. Undeland, W. Robins Power Electronics: Converters, Applications and Design Wiley, New York, 2008.

4. 4 M.E. El-Hawary Principles of Electric Machines with Power Electronic Applications Wiley-Interscience, New York, 2002.

5. 5 Ambrožič, V, Zajec, P. Električni servo pogoni Graphis Zagreb, 2019.

6. 6 Fouad, G. AC Electric Motors Control: Advanced Design Techniques and Applications Wiley, London, 2013.

Examination methods

Students' evaluation during the course and oral examination for students that satisfy by scoring, written and oral examination for other students.

Course assessment

Conducting university questionnaires on teachers (student-teacher relationship, transparency of assessment criteria, motivation for teaching, teaching clarity, etc.). Conducting Faculty surveys on courses (upon passing the exam, student self-assessment of the adopted learning outcomes and student workload in relation to the number of ECTS credits allocated to activities and courses as a whole).

Overview of course assesment

Learning outcomes
Upon successful completion of the course, students will be able to:

1. describe the construction and operation principle of asynchronous, synchronous and DC machines

2. propose the operating state of the selected electrical machine that meets the specified operating mode of the electric drive

3. recommend power and control characteristics of electronic power inverters that meet certain drive

4. recommend the control mode for the selected application of an electrical machine

5. calculate and interpret selected numerical examples in the field of electrical machines and drive

6. interpret the collected measurement data and results on electrical machines and drives in unloaded and voltage conditions

7. organise prescribed basic measurements of electrical, mechanical and thermal data on an electrical machine

Aktivnosti studenta: Vidi tablicu aktivnosti