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Institutionernas kurser för doktorander


Kursplan för

ENM055 - Electric drives 1
Kursplanen fastställd 2010-02-22 av programansvarig (eller motsvarande)
Ägare: MPEPO
7,5 Poäng
Betygskala: TH - Fem, Fyra, Tre, Underkänt
Utbildningsnivå: Avancerad nivå
Huvudområde: Elektroteknik
Institution: 47 - ENERGI OCH MILJÖ

Undervisningsspråk: Engelska

Modul   Poängfördelning   Tentamensdatum
Lp1 Lp2 Lp3 Lp4 Sommarkurs
0107 Tentamen 7,5 hp Betygskala: TH   7,5 hp   18 Okt 2010 em V,  13 Jan 2011 fm M,  16 Aug 2011 fm M

I program

TIELL ELEKTROINGENJÖR - elkraftsteknik, Årskurs 3 (obligatorisk)
MPEPO ELECTRIC POWER ENGINEERING, MSC PROGR - Core courses, Årskurs 1 (valbar)


Docent  Sonja Lundmark


EEK205   High performance electric drives EEK610   Electric drives-1




För kurser inom Chalmers utbildningsprogram gäller samma behörighetskrav som till de(t) program kursen ingår i.

Kursspecifika förkunskaper



The overall aim of the course is to provide an understanding of the design of electric drive systems in general and an ability to choose the relevant drive system for a given application. The course will provide a deep understanding of electric machines: theory, applications, steady-state, and (for the dc brush machine) dynamic performance with speed and current control including relevant theory. The student is encouraged to consider environmental aspects, such as energy-efficient drive systems, and recycling of copper.

Lärandemål (efter fullgjord kurs ska studenten kunna)

*describe the steps required for the design and implementation of an electric drive system. The student should also be able to exemplify some of the trade-offs that are available to the developer or to a drive system purchaser. *describe the assessments of the treated electric machines (mentioned below), the way of operation, the steady state models, and general performance such as torque-speed curves. *recognize the appearance of the different machine types and know what the main parts look like. * find the parameters in the models by performing relevant experiments and understand and follow safety instructions for the drive system lab used in the course. * describe the dynamic performance of the dc brush machine with the coupled electric and mechanic equations. * use the relevant models and perform simulations with Matlab/Simulink on direct start, current and speed control of the dc brush machine, connected to the supply via a thyristor converter (assumed ideal). * compare simulations and experimental findings and document and present the work in a written report. * choose the relevant (environmental friendly) drive system for a given application with given specifications.


The course menu is as follows: 1. Introduction to Electric Drives 2. Review of Control Engineering 3. Direct-current machines: theory, applications, steady-state and dynamic performance 4. Alternating-current machines: theory, applications and steady-state performance 5. Motor/Drive selection The treated machine types are: dc brush-, synchronous-, induction, brushless dc-, and switched reluctance machines. Lectures and tutorials are given in conjunction with practical laboratory work and computer simulations. There are two practical laborations and one computer lab. Before coming to the lab, home assignments must be done and the safety instructions must be read and understood. This will be tested before the laboration can start. Poor preparation will mean that you fail to attend. The laborations deal with: 1. Dc-motor: The laboratory experiment aims at determining parameters of a DC motor. 2. Dc motor control: In this assignment you shall perform a direct start and implement a digital PI-regulator to control the speed of the DC machine in a Labview program. 3. Dc-motor control: Simulations in Simulink and MATLAB regarding start of the DC machine, current and speed regulation etc. In the laboratory report, some of the results of the practical work and the simulations will be compared and/or discussed.


The course comprises of about 17 lectures (2 x 45 min), 11 tutorials (2 x 45 min), two practical laboratory exercises (2 x 4 h) and a (4 x 2 h) computer lab. There is also a (not obligatory) trial exam (4 x 45 min).


* Electric Motors and Drives (2006), by A Hughes published by Newnes, Elsevier. (Available at Cremona) * Control of Variable-Speed Drives (2002), by L Harnefors (Available at DC) * Hand-out material at lectures and tutorials Students are encouraged and expected to consult other books in the general area of Electric Drives.


Written examination (70%). Approved laboratory exercises including a laboratory report (30%). Trial exam (10%). Grades: Fail, 3, 4 or 5. Students must achieve at least 50% in the laboratory mark to pass the course. Students must also achieve at least 40% in the written examination to pass the course.

Sidansvarig Publicerad: må 13 jul 2020.