Subject description
Linear systems and their descriptions: step response, Laplace transform and transfer function, frequency response (Bode, Nyquist, Nichols plots).
Block diagrams, open-loop, closed-loop systems and corresponding transfer functions.
Stability, steady state error, dynamic error.
Features of elements of control systems in power electronics and electrical drives.
PID controllers and their realization with analogue and digital electronics.
Optimization of controllers' parameters.
Cascade control systems, process control systems.
Features of digital control.
Influence of nonlinearities, limit cycles, integrator wind-up.
Basics of simulations and use of appropriate tools in control system design.
Examples of control systems in power electronics and electrical drives.
The subject is taught in programs
Objectives and competences
The student will master fundamental topics in the field of control engineering, with emphasis on linear systems. He will meet simpler methods to design control systems and learn how to use these methods with state-of-the-art software tools. The student will develop a critical approach to operate, optimize and upgrade the control systems. With some additional knowledge, the student will be able to design simpler control systems in the field of power engineering.
Teaching and learning methods
Lectures (45 hours) and laboratory work (15 hours).
Expected study results
Knowledge and understanding:
The student will understand the basic concepts in the field of control engineering and know simpler methods to describe the electrical and mechanical systems.
Application:
The student will efficiently operate implemented control systems in the field of power electronics and if necessary, he/she will be able to upgrade and optimize them.
Reflection:
The student will be aware of static and dynamic features of the elements of control systems. He/she will know how to evaluate the impact of these features on the effectiveness of control.
Transferable skills:
The skills acquired in this course will provide a basis for understanding and study of control in other courses covering power engineering, electrical drives and electrical technological processes. In addition to control systems in technology, the student will evaluate the operation of feedback systems in the nature and society.
Basic sources and literature
- David Nedeljković: Regulacije v močnostni elektrotehniki, predvideni izid 2016.
- Gene F. Franklin, J. David Powell, Abbas Emami-Naeini: Feedback control of dynamic systems, Addison-Wesley, 2010.
- Dogan Ibrahim: Microcontroller based applied digital control: J. Wiley & Sons, 2006.
- Werner Leonhard: Control of Electrical Drives, Springer; 2001.
- Vanja Ambrožič, Peter Zajec: Električni servo pogoni, Slovensko združenje elektroenergetikov CIGRÉ-CIRED, 2016.
- Rafael Cajhen: Regulacije, Univerza v Ljubljani, Fakulteta za elektrotehniko in računalništvo, 1990.
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University of Ljubljana, Faculty of Electrical Engineering Tržaška cesta 25, 1000 Ljubljana