Power Electronics

Module number: EI 8031

Duration: 1 Semester

Recurrence: Winter semester

Language: English

Number of ECTS: 5


Professor in charge: Ralph Kennel

Amount of work

Class attendance: 60

Private study: 90

Total: 150

Course work and exam formalities

Written exam at the end of the module, 90 min


Principles of electronic power converters and their application, electronic devices and components in power electronics, cooling of power semiconductores, diode rectifiers, line-commutated converters, DC-DC-converters and power supply units (mains adaptors), voltage source inverters, current source inverters, frequency converters, matrix converters, mulit-level converters, gate drivers, control of electrical machines, space vector concept, pulse with modulation methods

Learning outcome

At the end of the module, students are capable of:

- evaluating the electromagnetic compatibility and the principles of converter circuits in their respective application

- analyzing non-controlled and controlled rectifiers and mains adaptors

- rmembering the advantages and disadvantages of power semiconductors

- analyzing and designing basic rectifier circuits conform to the specified application

- understanding and evaluating the basic behavior of voltage source inverters

- understanding different rectifier concepts

- knowing and evaluating the interaction between rectifiers/inverters and their surrounding systems

- understanding pulse with modulation methods

- knowing space vector concept in electrical machine control


Basic knowledge of:

- linear algebra, ordinary differential equations

- complex calculus for alternating current systems

- Laplace-/Fourier-transformation

- electrics and electronics

- electric drives (non-obligatory)

- fundamentals in (linear) control theory (non-obligatory)


- Presentation

- Black-/whiteboard

- Overhead projector

- Manuscript

- Simulation examples

- Tutorials


- Schröder, D.: "Elektrische Antriebe 4 - Leistungselektronische Schaltungen", Springer-Verlag, Berlin Heidelberg, 1998

- Jäger, R. & Stein, E.: "Leistungselektronik - Grundlagen und Anwendungen", 5. Auflage, Vde-Verlag, 2000

- Heumann, K. :"Grundlagen der Leistungselektronik", Teubner Verlag, 6. Auflage, 1996

- Bose, B. K.: "Modern power electronics and ac devices", Prentice Hall International, 2001

- Vas, P., "Vector control of AC machines", New York: Oxford University Press, 1990

- Valentine, R.: "Motor control electronics handbook", New York: McGraw-Hill, 1998

Teaching and studying methods

Additionally to the individual learning methods of the students a more detailed knowledge development is assured by several tutorials, where problems are discussed and individually solved.

As teaching method during lectures and tutorials classroom teaching is preferred. During tutorials also problems and exercises are provided (discussion, evaluation and analysis of e.g. simulation examples, solution statements,...). The practical course allows to practice the content of the lecture and tutorials by e.g. simulations.