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Syllabus for

Academic year
ENM060 - Power electronic converters
Syllabus adopted 2012-02-23 by Head of Programme (or corresponding)
Owner: MPEPO
7,5 Credits
Grading: TH - Five, Four, Three, Not passed
Education cycle: Second-cycle
Major subject: Electrical Engineering

Teaching language: English
Open for exchange students
Block schedule: A
Maximum participants: 100

Course module   Credit distribution   Examination dates
Sp1 Sp2 Sp3 Sp4 Summer course No Sp
0107 Examination 7,5 c Grading: TH   7,5 c   16 Dec 2013 pm V,  23 Apr 2014 pm V,  26 Aug 2014 pm V

In programs

TIELL ELECTRICAL ENGINEERING - Electrical Engineering, Year 3 (compulsory)
TIELL ELECTRICAL ENGINEERING - Common branch of study, Year 3 (compulsory elective)


Tekniklektor  Stefan Lundberg
Professor  Torbjörn Thiringer


EEK175   Power electronics-1

Course evaluation:

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For single subject courses within Chalmers programmes the same eligibility requirements apply, as to the programme(s) that the course is part of.

Course specific prerequisites



The aim of this course is to make the students familiar with the basic design and operation of power electronic converters. Analysis of ideal wave-shapes, transformation ratios and basic efficiency calculations are among the items that the students will be able to perform after having participated in the course. The students will perform simulation experiments using the software Cadence PSpice and they will be given the opportunity to practice experimental work on DC/DC-converters. The course lays the foundation for the continuation course: Power electronic devices and applications. In addition, the items treated in the course will also be useful for engineers working with electric drives and power system technology.

Learning outcomes (after completion of the course the student should be able to)

Perform analytical calculations of ideal DC/DC converters such as the buck converter, boost converter, buck-boost converter, flyback converter and the forward converter. The converter topologies are thoroughly analyzed in both continuous and discontinuous conduction mode where current and voltage wave-shapes are analyzed. In addition to this, other topologies such as the push-pull converter, half bridge and full bridge converters shall be recognized and exemplified.
Explain and describe how Pulse Width Modulation (PWM) works.
Describe the basic operating principle of AC/DC inverters. Different modulation strategies (e.g. PWM and square wave operating) to control the switches are implemented and the resulting waveforms are evaluated and compared.
Perform calculations on single- and three-phase diode rectifiers operating in discontinuous operation mode with a voltage-stiff DC-link.
Perform calculations on both single- and three-phase diode and thyristor converters operating in continuous operation. Combine the concept of line impedance with the converter circuit and evaluate the influence..
Indentify of simple power electronic converter diagrams. Interpret and realize the schematics into a physical circuit and perform basic wave-shape and efficiency measurements.
Utilize the software PSpice to simulate basic power electronic circuits as the ones presented above.
Be able to determine the Fourier components and THD for basic current and voltage wave-shapes mathematically, as well as determining the same quantities for arbitrary wave-forms using PSpice.
Determine the losses in both passive and semiconductor components. The resulting temperature in the semiconductors is analyzed and an appropriate heat-sink is evaluated.
Recognize the need for a controller circuit within the power electronic converter and describe the purpose as well as the means to control the desired quantity.
From an engineering point of view, be able to identity suitable components (both active and passive) so that the demands are satisfied for the analyzed converter with respect to e.g. size and losses.


Lectures and tutorials:
Review of electric and mathematics prerequisites voltage current relations for passive components, mean and RMS-value, Fourier analysis.
Basic semiconductor functions: diodes, thyristors, MOSFETs, GTOs and transistors.
Coreless DC/DC converters: Buck converter, boost converter, buck-boost converter, half bridge and full bridge converters.
DC/DC-converters with isolation transformers: flyback, forward, half bridge, push-pull and full bridge converters.
Design of magnetic components such as inductors and transformers by magnetic equivalent circuits and reluctances.
Control of a power electronic converter; introduction of the concept of state-space averaging and understanding the need for the controller circuit.
DC/AC-generation: single-phase and three-phase AC-generation, square-wave and PWM-modulated converters.
Diode rectifiers: single & three-phase diode rectifiers with continuous and discontinuous current.
Thyristor converters: single & three-phase, rectifier and inverter operation
Losses and heat sinks: Loss calculations, thermal calculations and cooling requirements.

Laboratory experiments (compulsory):
Buck converter (step-down converter)
Flyback converter (step-up/step-down converter with transformer)

PSpice exercises (compulsory):
Seven PSpice exercises dealing with various subjects in the course.


The course comprises of ca 16 lectures (2 x 45 min), 14 tutorials (2 x 45 min), two laboratory exercises (4 h), 7 P-spice computer assignments (2h).


Mohan, Undeland, Robbins, Power Electronics, Converters, applications and design, Wiley 2003, 3rd ed.


Written examination. Grades: Fail, 3, 4 or 5. Approved laboratory and P-spice exercises.

Page manager Published: Mon 28 Nov 2016.