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BL30A1020 Electrical Drives, Compact, 4 cr 
Code BL30A1020  Validity 01.08.2017 -
Name Electrical Drives, Compact  Abbreviation Electrical Driv 
Credits4 cr   
TypeBasic studies  
  Grading scaleStudy modules 0-5,P/F 
  Eligibility for post-graduate studiesno
    Allowed to study several timesno
Organisation LUT School of Energy Systems 

Juha Pyrhönen 

Description by Study Guide
Note  Location: Lappeenranta

The course has common lectures exercises and homework with the first part of the course BL30A1001 Electrical Drives.
The student may participate either in “Electrical Drives, Compact” or “Electrical Drives”, not in both of them.

Year  M.Sc. (Tech.) 1 
Teaching Language  English 
Teacher(s) in Charge 

Professor, D.Sc. (Tech.) Juha Pyrhönen


Upon completion of the course the student will be able to: 1. understand the role of electrical drives, 2. understand different torque producing principles in different machines, 3. model and simulate a DC motor drive, 4. describe the principles of scalar, vector and direct torque control of rotating field machines, 5. define the most important power electronic converters, 6. discuss the principles of PWM, space vector modulation and DTC. 7. model the behaviour of permanent magnet synchronous machine by using vector equivalent circuits and vector diagrams.


Theory of electric motor drives, operation and vector equivalent circuits. Torque production in different machines. Power electronic converters suitable for motor and generator drives. Scalar control, vector control, direct flux linkage control and direct torque control (DTC). Permanent magnet synchronous machine drives.

Teaching Methods 

Common lectures 24 h, tutorials 24 h, 2nd period. Independent study including homework 56 h.
Total workload 104 h.

Examination in Examination schedule (Yes/No)  No 
Examination in Moodle (Yes/No)  No 
Examination in Exam (Yes/No)  No 
Assessment scale and assessment methods 

Pass/fail. The course can be passed with via good enough independent homework.

Course Materials 

Lecture material in Moodle

The course is based on chapters 1-7 and 9 of the book: Pyrhönen, Hrabovcova, Semken, “Electrical Machine Drives Control: An Introduction”, published by John Wiley et Sons 2016


The students are recommended to have completed the courses BL30A0000 Electric Circuits, BL10A0100 Basics of Electric Engineering, BL30A0500 Introduction to Electrical Drives and BL30A0800 Electromagnetic Components and to have attended the course BL30A0400 Design of an Electrical Machine./Edited 8.10.2018/ml

Places for exchange-students? (Yes, number/No)  max 15 
Places for Open University Students?(Yes, number/No)  max 5 

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