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BL30A0400 Design of an Electrical Machine, 6 cr / 3.33 cu 
Code BL30A0400  Validity 01.08.2007 -
Name Design of an Electrical Machine  Abbreviation Design of an El 
Credits6 cr / 3.33 cu   
TypeBasic studies  
  Grading scaleStudy modules 0-5,P/F 
  Eligibility for post-graduate studiesYes
    Allowed to study several timesno
Organisation LUT School of Energy Systems 

Dmitry Egorov 
Juha Pyrhönen 

Description by Study Guide
Note  Location: Lappeenranta 
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. perform a basic design of a rotating electrical machine, 2. design the simplest winding arrangements and other components of the machine, 3. explain the torque production process in electrical machines, 4. calculate the main data (equivalent circuit parameters) of an electrical machine from machine geometric and winding designs, 5. List and apply the most important materials used in magnetic circuits and windings, 6. model the machine with an equivalent circuit, 7. compare machine designs with each other by using the per unit presentation of machines, 8. use phasor diagrams in the machine analysis, 9. discuss the problems of insulation systems and heat transfer.


Electromagnetic principles used in machine design, the magnetic circuit of an electric machine, the windings of an electric machine, impacts of the structure of the electric motor on the motor characteristics, calculation of the parameters of an equivalent circuit from the dimensions of the machine (resistances, inductances), effective-value phasor diagrams for different machine types, principles of electric machine design, insulation materials and systems heat transfer.

Teaching Methods 

Lectures 24 h, tutorials 24 h, design assignment of an electric machine 48 h and other independent studies 57 h, exam 3 h 1st period.
Total workload 156 h.

Suitability for doctoral studies (Yes/Leave empty)  Yes 
Examination in Examination schedule (Yes/No)  Yes 
Examination in Moodle (Yes/No)  No 
Examination in Exam (Yes/No)  No 
Assessment scale and assessment methods 

0-5, written examination 100 %. Satisfactorily completed assignment required.
Or: The course can be passed with the grade “Accepted” by satisfactory completion of the homework and the design assignment.

Course Materials 

Lecture materials in Moodle.
The course is based on suitable parts of Pyrhönen, Jokinen, Hrabovcova: Design of Rotating Electrical Machines


Students are recommended to have good knowledge in electromagnetism, completed BL30A0000 Electric Circuits, BL10A0100 Basics of Electric Engineering.

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

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