- Summary of Laplace and Zeta transform, linear systems, three-phase systems, digital systems.
- Theory of Clarke- and Park transformations in n-phase systems.
- Electrical machine models, dynamics and operational regions without feedback.
- General principles of field-oriented control and flux weakening.
- Sensors for current -, speed and position feedback, inverter and their non-linearities.
- Estimate of magnetic flux linkage for control purpose.
- Tuning of controllers.
- Model-based sensorless algorithms.
- Sensorless algorithms with high-frequency voltage injection.
- Sensitivity analysis applied on vector control.
- Reference values for loss minimisation or improvement of performance.
- Direct torque control and predictive control applied to drive systems.
EJ2230 Control in Electrical Energy Conversion 6.0 credits
Aim of the course is to give the students ability to design and analyse control systems for electrical energy conversion. The course focuses primarily on control of voltage-source converters, both in electrical machine drives and connected to the grid.
Information per course offering
Information for Spring 2025 Start 14 Jan 2025 programme students
- Course location
KTH Campus
- Duration
- 14 Jan 2025 - 16 Mar 2025
- Periods
- P3 (6.0 hp)
- Pace of study
50%
- Application code
60302
- Form of study
Normal Daytime
- Language of instruction
English
- Course memo
- Course memo is not published
- Number of places
Places are not limited
- Target group
Open for all master programmes as long as it can be included in your programme.
- Planned modular schedule
- [object Object]
- Schedule
- Schedule is not published
Contact
Course syllabus as PDF
Please note: all information from the Course syllabus is available on this page in an accessible format.
Course syllabus EJ2230 (Spring 2024–)Headings with content from the Course syllabus EJ2230 (Spring 2024–) are denoted with an asterisk ( )
Content and learning outcomes
Course contents
Intended learning outcomes
After passing the course, the student should be able to:
- design and apply models for the electric energy conversion process, especially models for electrical machines and loads,
- apply the different time scales for the key variables in the electric energy conversion process,
- formulate closed-loop control systems with appropriate control methods and parameters that minimise electricity losses for different electrical machines,
- analyse stability and sensitivity of various control methods,
- apply the different principles of estimation of variables that cannot be measured directly and the importance of estimation with regard to the performance of the system
in order to be able to design and analyse control systems for electric energy conversion,
Literature and preparations
Specific prerequisites
- Knowledge in electric machines and drive systems, 6 higher education credits, equivalent completed course EJ2201.
- Knowledge in power electronics, 6 higher education credits, equivalent completed course EJ2301.
Recommended prerequisites
No information inserted
Equipment
No information inserted
Literature
No information inserted
Examination and completion
If the course is discontinued, students may request to be examined during the following two academic years.
Grading scale
A, B, C, D, E, FX, F
Examination
- PROA - Project assignment, 3.0 credits, grading scale: A, B, C, D, E, FX, F
- PROB - Project assignment, 3.0 credits, grading scale: A, B, C, D, E, FX, F
Based on recommendation from KTH’s coordinator for disabilities, the examiner will decide how to adapt an examination for students with documented disability.
The examiner may apply another examination format when re-examining individual students.
Opportunity to complete the requirements via supplementary examination
No information inserted
Opportunity to raise an approved grade via renewed examination
No information inserted
Examiner
Ethical approach
- All members of a group are responsible for the group's work.
- In any assessment, every student shall honestly disclose any help received and sources used.
- In an oral assessment, every student shall be able to present and answer questions about the entire assignment and solution.
Further information
Course room in Canvas
Registered students find further information about the implementation of the course in the course room in Canvas. A link to the course room can be found under the tab Studies in the Personal menu at the start of the course.
Offered by
Main field of study
Electrical Engineering
Education cycle
Second cycle
Add-on studies
No information inserted
Transitional regulations
The earlier examining items were PRO1 (2 higher education credits) and TEN1 (4 higher education credits).
Students who passed TEN1 but not PRO1 can contact the examiner to obtain a new project task that replaced PRO1. Students who did not pass any of the above should make the re-examination.
Supplementary information
In this course, the EECS code of honor applies, see: http://www.kth.se/en/eecs/utbildning/hederskodex.