Electrical servo drives in mechatronics

Course description

The overview of methods and procedures for control of modern servo drives with AC machines: induction, synchronous (with surface-mounted and buried magnets) and reluctance machines. Controlled drives in mechatronics (speed control in current supplied electrical machines; field oriented control – FOC; direct torque control – DTC). Problems concerning robustness of the control considering incorrectly identified and/or fluctuating parameters of the drive. Position and/or speed sensorless methods in AC drives. Sensorless control. The application of observers and MRAS in servo drives. Application of modern microprocessors in dynamically demanding electrical controlled systems: tasks, problems, configurations, software.

Electrical drives with linear motors and their significance in industrial applications.

Electrical drive systems in automotive vehicles (primary and auxiliary drives). Electrical traction systems – supply and drive principles, high speed applications, magnetic levitation systems, trends.

Double fed induction machine in wind energy conversion systems and pump power plants.

Design principles of energy efficient electric motors, control of electrical drives in energy saving regime.

On-line condition monitoring and diagnostics of electrical drives, early detection of electrical and mechanical faults of AC motors and power converters, application of artificial intelligence methods in integrated approach to control and supervision of modern servo drives.

Course is carried out on study programme

Objectives and competences

Students will be acquainted with the latest approaches and tools for open- and closed-loop control, monitoring of electrical servo drives and future trends in this research topic.

Learning and teaching methods

Lectures and individual student work with a mentor during preparation of the seminar work on a focused research topic.

Intended learning outcomes

Students will be able to asses the parameters of the entire drive system (control part, power converter and motor) and evaluate the priorities in choosing the appropriate configuration complying with the commission. The acquired knowledge will enable further investigation and application of new solutions in wide area of mechatronics.

Reference nosilca

Fišer R, Lavrič H, Bugeza M, Makuc D (2013) Computations of magnetic field anomalies in synchronous generator due to rotor excitaton coil faults. IEEE transactions on magnetics Vol. 49 No. 5: 2303-2306

Gašparin L, Fišer R (2013) Sensitivity of cogging torque to permanent magnet imperfections in mass-produced PM synchronous motors. Przeglęad Elektrotechniczny 89/2b: 80-83

Drobnič K, Nemec M, Fišer R, Ambrožič V (2012) Simplified detection of broken rotor bars in induction motors controlled in field reference frame. Control engineering practice Vol. 20 No. 8: 761-769

Nemec M, Drobnič K, Nedeljković D, Fišer R, Ambrožič V (2010) Detection of broken bars in induction motor through the analysis of supply voltage modulation. IEEE transactions on industrial electronics Vol. 57 No. 8: 2879-2888

Gašparin L, Černigoj A, Markič S, Fišer R (2009) Additional cogging torque components in permanent-magnet motors due to manufacturing imperfections. IEEE transactions on magnetics Vol. 45  No. 3: 1210-1213

Study materials

1. P. Krause, O. Wasynczuk, S. Sudhoff, S. Pekarek, Analysis of Electric Machinery and Drive Systems, IEEE Press, Wiley, 2013.

2. F. Shaahin, Electric Machines and Drives – Principles, Control, Modeling and Simulation, CRC Press, Taylor&Francis, 2013.

3. B.M. Wilamowski, J.D. Irwin, Power Electronics and Motor Drives, CRC Press, 2011.

4. F. Giri, AC Electric Motors Control – Advanced Design Techniques and Applications, Wiley, 2013.

5. C. Tze-Fun, S. Keli, Applied Intelligent Control of Induction Motor Drives, IEEE Press, Wiley, 2011.

6. R. Krishnan, Permanent Magnet Synchronous and Brushless DC Motor Drives, CRC Press, Taylor&Francis, 2010.

7. B. Drury, The Control Techniques Drives and Controls Handbook, IET Press, 2009.

8. H. Razik, Handbook of Asynchronous Machines with Variable Speed, Wiley ISTE, 2011.

9. E.F. Fuchs, M.A.S. Masoum, Power Conversion of Renewable Energy Systems, Springer, 2011.

10. G. Abad, J. Lopez, Doubly Fed Induction Machine – Modeling and Control for Wind Energy Generation, Wiley, 2011.

11. H.A. Toliyat, S. Nandi, S. Choi, H. Mesgin-Kelk, Electric Machines – Modeling, Condition Monitoring, and Fault Diagnosis, CRC Press, 2013.

12. Tavner P., Ran L., Penman J., Sedding H., Condition Monitoring of Rotating Electrical Machines, IET Press, 2008.

Bodi na tekočem

Univerza v Ljubljani, Fakulteta za elektrotehniko, Tržaška cesta 25, 1000 Ljubljana

E:  dekanat@fe.uni-lj.si T:  01 4768 411