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Syllabus for

Academic year
ENM070 - Power electronic devices and applications
Syllabus adopted 2013-02-14 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

Course module   Credit distribution   Examination dates
Sp1 Sp2 Sp3 Sp4 Summer course No Sp
0107 Examination 7,5 c Grading: TH   7,5 c   26 May 2014 pm M,  14 Jan 2014 pm M,  29 Aug 2014 pm M

In programs



Tekniklektor  Stefan Lundberg
Professor  Torbjörn Thiringer


EEK180   Power electronics-2

Course evaluation:


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

Power electronic converters


The aim of this course is to enhance the knowledge of the students regarding the design and application of power electronic converters. Examples are: design of driver circuits of various quality and for various applications, design of snubber circuits for improved EMI and loss operation, thermal calculations and considerations. In addition a goal is to explain the concept of soft-switching converters such as resonant and zero voltage current as well as zero voltage switching converters. Moreover an objective is to provide the students with knowledge of power electronic equipment connected to the grid such as HVDC (both classical and modern VSC-based), FACTS equipment, power factor correctors, UPS and power conditioners. Finally an aim is to give the students a deeper understanding in the properties and control of power electronic semiconductors.

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

Describe turn-on and turn-off transients of a MOSFET using equivalent circuit models.

Design drive circuits for MOSFET s and IGBT transistors, both unipolar and bipolar ones.

Theoretically describe the function of a control circuit for a dc/dc-converter. Practically put a control circuit into operation and determining the components for it, in order to obtain: voltage regulation, current mode control, over-current protection as well as gate pulses for a MOSFET transistor.

Describe how turn-on, turn-off and overvoltage snubber circuits are designed and how they operate.

Calculate component values for turn-on, turn-off and overvoltage snubbers based on circuit requirements.

Analyse oscillations over switching components on a real circuit and design circuits that reduce these as well as to implement these improvements on a real circuit.

Calculate the current and voltage wave-forms in load-resonant converters (SLR), and in zero-voltage and zero-current resonant-switch converters, with the knowledge of initial current and voltage values.

Describe how an HVDC converter system works and from which components such an installation is constructed. Describe how FACTS equipment such as SVC, TSCR and the TCR is designed and be able to determine the resulting impedance as well as the additional reactive power flow caused/created by the component.

Describe important aspects regarding power quality/EMI/EMC such as requirements, propagation, generation, effect and mitigation.

Perform simplified calculations on how inductively and capacitively coupled disturbances propagate from source to victim.

Describe superficially how a diode, thyristor, GTO, BJT (Bipolar Junction Transistor) and a MOSFET is designed and how it operates.

Describe physics of semiconductors in PN junction (charge distribution, breakdown voltage and depletion region).

Describe and calculate drift and diffusion currents in MOSFET, IGBT and diode. Design MOSFET, IGBT and diode with respect to desired breakdown voltage.


Lectures and tutorials:
Gate drivers: for bipolar transistors, MOSFETS, thyristors and GTO s, unipolar and bipolar driving, control circuits.
Snubber circuits: turn-on, turn-off and over-voltage snubbers. Lossless and RCD snubbers. Snubber design for various applications.
Soft-switching converters: Series and parallel resonant converters, zero-switching current and voltage converters (ZVS, ZCS)
Control of dc/dc-converters: Usage of a control IC, current and voltage protection, voltage and current control, design of converter bandwidth
Power electronic apparatus connected to the grid: Power factor corrector circuits, power conditioners & UPS.
HVDC: classical thyristor-based and novel VoltageSourceConverter-based HVDC.
FACTS: the construction of SVC, TCSC as well as the impact on the grid of series and shunt compensation of reactive power.
Harmonics: origin, impact and filtering of harmonics: EMI considerations.
Construction and behaviour of semiconductor devices: Diodes, Thyrsitors, GTO s, MOSFETs, BJT s, IGBT s and MOSFET s
Design of magnetic components: Practical construction of an inductor as well as a transformer
Energy storage systems with electrical interface: SMES, batteries, supercapacitors, application to traction applications
Grid interconnection of renewable energy systems: Power electronic interface for solar cells and wind energy converters.

Project (compulsory):
One compulsory laboratory project work including experimental work on the design of a power electronic converter is included in the course. Measured, calculated and simulated results of the project work are to be reported in a written report and parts should be presented at a seminar in the end of the course.


The course comprises of ca 18 lectures (2 x 45 min), 11 tutorials (2 x 45 min), one practical laboratory project work (28 h).


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


Written examination. Grades: Fail, 3, 4 or 5. Approved project work including a written report and oral presentation.

Page manager Published: Mon 28 Nov 2016.