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EJ2400 Electric Traction 6.0 credits

Elektrisk traktion

The course gives an introduction to electric railway traction including traction mechanics, rail systems, electrical drives, and power supplies.

  • Educational level

    Second cycle

  • Academic level (A-D)

    C

  • Subject area

    Electrical Engineering

  • Grade scale

    A, B, C, D, E, FX, F

Course offerings

Spring 14 for programme students

  • Periods

    Spring 14 P4 (6.0 credits)

  • Application code

    60608

  • Start date

    24/03/2014

  • End date

    2014 week: 23

  • Language of instruction

    English

  • Campus

    KTH Campus

  • Number of lectures

    28 (preliminary)

  • Number of exercises

  • Tutoring time

    Daytime

  • Form of study

    Normal

  • Number of places *

    Max. 10

    *) If there are more applicants than number of places selection will be made.

  • Course responsible

    Stefan Östlund <stefano@kth.se>

  • Teacher

    Stefan Östlund <stefano@kth.se>

  • Target group

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

    Degree Progr. in Vehicle Engineering (CFATE, T)

    Master (Two Years), Vehicle Engineering , Track, Railway year 1 - obligatory (TFORM FORB)

    open for all programs

  • Part of programme

Spring 14 for single courses students - To application

  • Periods

    Spring 14 P4 (6.0 credits)

  • Application code

    20012

  • Start date

    24/03/2014

  • End date

    2014 week: 23

  • Language of instruction

    English

  • Campus

    KTH Campus

  • Number of lectures

    28 (preliminary)

  • Number of exercises

  • Tutoring time

    Daytime

  • Form of study

    Normal

  • Number of places *

    1 - 7

    *) 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

    Stefan Östlund <stefano@kth.se>

  • Teacher

    Stefan Östlund <stefano@kth.se>

  • Application

    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.

Spring 13 for programme students

  • Periods

    Spring 13 P4 (6.0 credits)

  • Application code

    60478

  • Start date

    2013 week: 12

  • End date

    2013 week: 22

  • Language of instruction

    English

  • Campus

    KTH Campus

  • Number of lectures

  • Number of exercises

  • Tutoring time

    Daytime

  • Form of study

    Normal

  • Number of places

    No limitation

  • Schedule

    Schedule (new window)

  • Course responsible

    Stefan Östlund <stefano@kth.se>

  • Teacher

    Stefan Östlund <stefano@kth.se>

  • Target group

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

    Degree Progr. in Vehicle Engineering (CFATE, T)

    Master (Two Years), Vehicle Engineering , Track, Railway year 1 - compulsory (TFORM FORB)

    open for all programs

  • Part of programme

Spring 13 for single courses students

  • Periods

    Spring 13 P4 (6.0 credits)

  • Application code

    20029

  • Start date

    18/03/2013

  • End date

    2013 week: 22

  • Language of instruction

    English

  • Campus

    KTH Campus

  • Number of lectures

    56 (preliminary)

  • Number of exercises

  • Tutoring time

    Daytime

  • Form of study

    Normal

  • Number of places *

    Max. 10

    *) If there are more applicants than number of places selection will be made.

  • Schedule

    Schedule (new window)

  • Course responsible

    Stefan Östlund <stefano@kth.se>

  • Teacher

    Stefan Östlund <stefano@kth.se>

  • Target group

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

    Degree Progr. in Vehicle Engineering (CFATE, T)

    Master (Two Years), Vehicle Engineering , Track, Railway year 1 - obligatory (TFORM FORB)

    open for all programs

Learning outcomes

After the examination the student should be able to:

  • describe fundamental system issues in electric railway traction including running resistance, tractive effort, adhesion, power and energy consumption.
  • calculate tractive effort, power, acceleration and velocity of rail vehicles
  • describe different components of an electric traction vehicle and their for traction purposes important characteristics
  • make estimations of voltages, currents and power of electrical drives for rail vehicles with induction motors or dc motors.
  • be familiar with other types of electric drives for rail vehicles,
  • describe the design of ac and dc power supplies for electric traction
  • calculate the power capacity for different railway power supply systems
  • Describe the background to electromagnetic interferences (EMI) in electric railway traction and define important concepts and parameters.

Course main content

Historical survey. General principles of electric traction and traction systems. Tractive and braking effort. Power requirements and energy consumption. Traction vehicles; electric drives, transformers and converters, control and mechanical transmission. Power supply systems; AC and DC supplies, power capacity, overhead catenary systems, overvoltages, line interferences and electromagnetic compability, EMC.

Disposition

24 h Lecture + 3 Assignments

Eligibility

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

Prerequisites

One of the following courses are recommended; EJ2200 Electrical Machines and Drives, EJ1200 Electric Power Systems or EJ2300 Power Electronics.

Literature

Östlund, S., Elektrisk Traktion KTH 2005

Examination

  • INL1 - Assignment, 0.5 credits, grade scale: P, F
  • INL2 - Assignment, 0.5 credits, grade scale: P, F
  • INL3 - Assignment, 0.5 credits, grade scale: P, F
  • TENA - Examination, 4.5 credits, grade scale: A, B, C, D, E, FX, F

Requirements for final grade

Written exam and one project assignment

Offered by

EES/Electrical energy conversion

Contact

Stefan Östlund

Examiner

Stefan Östlund <stefano@kth.se>

Supplementary information

Replaces 2C1119

Version

Course plan valid from: Autumn 10.
Examination information valid from: Spring 13.