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EJ2311 Modulation of Power Electronic Converters 6.0 credits

Effektelektronisk modulation

Modulation of power converters plays a decisive role in modern power electronics where low losses as well as dynamical requirements, harmonics and electromagnetic interference (EMI) are of great importance. The course covers synthesis and analysis of modulation methods for Voltage Source Converters (VSC).

Educational level Second cycle Academic level (A-D) D
Subject area Electrical Engineering
 Grade scale P, F

Course offerings

Autumn 12 for programme students

Periods Autumn 12 P2 (6.0 credits) Application code 50742
Start date 2012 week: 43 End date 2013 week: 1
Language of instruction English Campus KTH Campus
Number of lectures 16 (preliminary) Number of exercises
Tutoring time Daytime Form of study Normal
Number of places No limitation
Course responsible Oskar Wallmark <owa@kth.se>
Staffan Norrga <norrga@kth.se>
Target group

Degree Progr. in Electrical Engineering (CELTE, E)   
Master (Two Years), Electric Power Engineering (TELPM)

open for all programs
Part of programme

Autumn 12 for programme students

Periods Autumn 12 P2 (6.0 credits) Application code 51636
Start date 2012 week: 43 End date 2013 week: 1
Language of instruction English Campus KTH Campus
Number of lectures 16 (preliminary) Number of exercises
Tutoring time Daytime Form of study Normal
Number of places No limitation
Course responsible Staffan Norrga <norrga@kth.se>
Teacher Hans-Peter Nee <hansi@kth.se>
Target group

Open only for industry student

Autumn 13 for programme students

Periods Autumn 13 P2 (6.0 credits) Application code 50914
Start date 2013 week: 45 End date 2014 week: 3
Language of instruction English Campus KTH Campus
Number of lectures 16 (preliminary) Number of exercises
Tutoring time Daytime Form of study Normal
Number of places No limitation
Course responsible Staffan Norrga <norrga@kth.se>
Target group

Degree Progr. in Electrical Engineering (CELTE, E)   
Master (Two Years), Electric Power Engineering (TELPM)

open for all programs from year 3
Part of programme

Autumn 13 for single courses students - To application

Periods Autumn 13 P2 (6.0 credits) Application code 10031
Start date 04/11/2013 End date 2014 week: 3
Language of instruction English Campus KTH Campus
Number of lectures 16 (preliminary) Number of exercises
Tutoring time Daytime Form of study Normal
Number of places * 3 - 4
*) The Course date may be cancelled if number of admitted are less than minimum of places. If there are more applicants than number of places selection will be made.
Course responsible Staffan Norrga <norrga@kth.se>
Target group

Degree Progr. in Electrical Engineering (CELTE, E)   
Master (Two Years), Electric Power Engineering (TELPM)

open for all programs from year 3
Apply for this course at antagning.se through this application link.
Please note that you need to log in at antagning.se to finalize your application.

Learning outcomes

After the examination the student should be able to

  • Define fundamental concepts in pulse-width modulation
  • Describe differences between different principles of modulation  regarding properties such as harmonics and dynamic conditions
  • Know different carrier based modulation methods and their synthesis.
  • Use different methods for analysis of carrier based modulation methods
  • Calculate pulse-patterns for harmonic elimination
  • Estimate stray losses in electrical machines due to harmonics.

Course main content

Circuit modelling, fundamental mathematics, Harmonics in single-phase and three-phase systems. Survey of modulation principles. Relation between modulation and the development of power-semiconductors. Carrier-based methods, SPWM and space vector modulation. Influence of sampling. Fixed pulse-patterns, harmonic elimination. Tolerance band modulation. Harmonics in power systems and electric railway traction, norms and standards. Influence of harmonics on electrical machines. Survey of harmonic filters.

Disposition

Lectures 16 h
Computer excercises 8 h
Laboratory work 4 h

The course is given in English.

Eligibility

Completed Bachelor's degree (180 higher education credits), or equivalent academic qualifications. Documented proficiency in English corresponding to English B/English 6.

Prerequisites

EJ2200 Electrical machines and drives and EJ2300 Power Electronics.

Literature

D. G. Holmes, T. Lipo., “Pulse Width Modulation for Power Converters”. Wiley Interscience.

Examination

  • LAB1 - Laboratory Work, 1.0 credits, grade scale: P, F
  • PRO1 - Project, 1.5 credits, grade scale: P, F
  • PRO2 - Project, 1.5 credits, grade scale: P, F
  • TEN1 - Examination, 2.0 credits, grade scale: P, F

Requirements for final grade

Projects and laboratory reports, written examination

Offered by

EES/Electrical energy conversion

Contact

Staffan Norrga

Examiner

Staffan Norrga <norrga@kth.se>

Version

Course plan valid from: Autumn 10.
Examination information valid from: Autumn 09.