227-0518-10L  Design and Control of Electric Machines

SemesterSpring Semester 2021
LecturersD. Bortis
Periodicityyearly recurring course
Language of instructionEnglish


227-0518-10 GDesign and Control of Electric Machines4 hrs
Thu08:15-12:00HG E 21 »
D. Bortis

Catalogue data

AbstractThis course covers modeling and control concepts of modern drive systems and provides a deeper understanding of the dynamic operation of electric machines. Different aspects arising in the design of electric drive systems are investigated. The exercises are used to consolidate the concepts discussed.
ObjectiveThe objective of this course is to convey knowledge on control strategies of different types of electric machines and on design principles of variable speed drive systems. A dynamic modeling of the electromechanical system is investigated, enabling the proper design of cascaded speed, torque/current controllers. Further objectives are the identification of machine parameters and a short insight into basic inverter circuits applied in advanced motor drive systems. Exercises are used to consolidate the presented theoretical concepts.
Content1. Introduction to variable speed motor drive systems consisting of:
- Electromechanical system
- Power electronic system
- Control system
- Measurement system

2. Control structures and strategies of DC Machine/Synchronous machine/Asynchronous machine/Brushless DC machine.
- Cascaded control
- U/f Control
- Slip Control
- Field-oriented control

3. Dynamic Operation of electric machines
- Dynamic modeling of electromechanical system
- Controller types and design
- Current/torque control
- Speed control (Voltage control / Flux weakening)

4. Power electronic inverter circuits in variable speed drive systems
- Voltage and current source inverter systems
- Basic operation and pulse width modulation

5. Identification of machine parameters

6. Design principles of variable speed motor drives systems
Lecture notesLecture notes and associated exercises including correct answers
Prerequisites / NoticePrerequisites: Fundamentals of Electric Machines

Performance assessment

Performance assessment information (valid until the course unit is held again)
Performance assessment as a semester course
ECTS credits6 credits
ExaminersD. Bortis
Typesession examination
Language of examinationEnglish
RepetitionThe performance assessment is offered every session. Repetition possible without re-enrolling for the course unit.
Mode of examinationwritten 180 minutes
Written aidsNon-programmable calculator. A summary of the lecture notes is provided to the students at the written exam. Own summaries, exercises and their solutions are not allowed.
This information can be updated until the beginning of the semester; information on the examination timetable is binding.

Learning materials

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Offered in

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