Electrical Machines


Recommended prerequisite for participation in the module

The module is based on knowledge achieved in the modules Linear algebra, Calculus, Applied engineering mathematics and AC circuit theory or similar

Content, progress and pedagogy of the module

Learning objectives


  • Have basic knowledge about electromagnetic phenomenon, operation and construction of transformers and electrical machines
  • Know about flux, flux linkage, phase inductance, mutual inductance and their characteristics
  • Have basic knowledge about electromechanical energy conversion
  • Have knowledge about three-phase windings and rotating magnetic fields
  • Have knowledge about electrical machine material and their characteristics as well as practical application issues, and electrical machine standards
  • Have knowledge about transformers, DC, AC and synchronous machines, and the determination of their parameters by tests and construction of steady-state equivalent circuit models under various operating conditions


  • Be able to perform calculations using equivalent circuit models for transformers and electrical machines
  • Be able to make necessary simplifications of the transformer equivalent circuit diagram in different applications
  • Can draw phasor diagrams for the transformer and electrical machines
  • Be able to calculate the power, torque, speed, current, power factor and efficiency of transformers and electrical machines
  • Be able to perform experimental tests to determine the desired parameters for transformers and electrical machines


  • Be able to use equivalent circuit diagrams for transformers, synchronous machines, induction machines and analyse their performances under different operating conditions
  • Be able to perform laboratory measurements to determine the desired parameters for equivalent circuit diagrams and models
  • Be able to handle development specific situations related to the steady-state design, analysis and application of transformers and electrical machines

Type of instruction

Lectures, exercises and laboratory experiments. Teaching is in English and/or Danish depending on the participation of international students, or if the supervisor is of foreign origin.

Extent and expected workload

Since it is a 5 ECTS course, the work load is expected to be 150 hours for the student.



Name of examElectrical Machines
Type of exam
Written exam
4-hour written examination.
Assessment7-point grading scale
Type of gradingInternal examination
Criteria of assessmentThe criteria of assessment are stated in the Examination Policies and Procedures

Facts about the module

Danish titleElektriske maskiner
Module codeN-EN-B5-5
Module typeCourse
Duration1 semester
Language of instructionDanish and English
Empty-place SchemeYes
Location of the lectureCampus Aalborg, Campus Esbjerg
Responsible for the module


Study BoardStudy Board of Energy
DepartmentDepartment of Energy
FacultyThe Faculty of Engineering and Science