course-details-portlet

TET4120

Electrical Drives

Credits 7.5
Level Second degree level
Course start Spring 2011
Duration 1 semester
Language of instruction English
Examination arrangement Written examination

About

About the course

Course content

In spite of the fact that the increased investment cost of a variable speed drive is in many cases very quickly balanced by large energy savings compared to a fixed speed drive, approximately 97% of all new motors are sold without a frequency converter. This course explains the energy savings potential and covers the most commonly used type of electrical motor drives. Part I gives an overview of different type of electrical motor drives, type of load functions including the impact of using mechanical gears/transmissions. In part II some simplified models of the most commonly used power electronic converter topologies are presented. Control and modulation methods are included as well. Part III in the course is devoted to DC drives. Mathematical modelling is performed, analysis of steady state characteristics and as well as dimensioning of current- and speed controllers. In part IV a general model of AC machines are presented, and induction machine drives are treated. This includes introduction of space vectors, transformations and transformed mathematical models. In particular, the control principle- Rotor Flux Oriented Control – is covered in details. In part V, synchronous machine drives are presented.

Learning outcome

The course is aiming to give a thorough understanding of converter topologies and control principles used in modern electrical motor drives.

Learning methods and activities

Lectures, compulsory exercises and project. The students will be divided into project groups to perform a project, in which design, analysis and simulation of a drive shall be done for a given application. Two laboratory exercises are compulsory. The course is given in English. If there is a re-sit examination, the examination form may change from written to oral.

Compulsory assignments

  • Project in groups
  • Exercizes
  • Laboratory exercize in groups

Course materials

Text books, lecture notes, manuals for simulation program.

Credit reductions

Course code Reduction From
SIE1025 7.5 sp
This course has academic overlap with the course in the table above. If you take overlapping courses, you will receive a credit reduction in the course where you have the lowest grade. If the grades are the same, the reduction will be applied to the course completed most recently.

Subject areas

  • Electrical Power Engineering
  • Technological subjects

Contact information

Department with academic responsibility

Department of Electric Energy

Examination

Examination

Examination arrangement: Written examination
Grade: Letters

Ordinary examination - Spring 2011

Skriftlig
Weighting 100/100 Date 2011-05-30 Time 09:00 Duration 4 timer Place and room Not specified yet.

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