Design of Electrical Machines

Course description

The concept of the electromagnetic design of electrical machines and determination of their basic parameters. Design of electrical machine magnetic circuits and electric circuit. Theory and application of finite element methods in engineering design of electrical machines. Application of commercial software packages in the design of electric machines. Calculations of equivalent circuit parameters and output characteristics of the induction machine, synchronous machine, electric machine with permanent magnets, reluctance machine and the latest types of electrical machines from their geometric data. The calculations of iron and copper losses and determining the efficiency of designed electric machines. Introduction to optimization procedures in the design of electric machines.

Course is carried out on study programme

Elektrotehnika 2. stopnja

Objectives and competences

The aim of the course is to acquire theoretical knowledge required for the design of electrical machines. Getting to know and to use specialized software packages for the design of electrical machines. To prepare the students for the synthesis and analysis of geometric models of electric machines and their use to analyze stationary and transient electromagnetic and electromechanical states.

Learning and teaching methods

Lectures, laboratory exercises, demonstrations, work with computer tools, coursework and project work.

Intended learning outcomes

After successful completion of the course, students should be able to:

  • describe the basic connections of electromagnetic quantities in electrical machines
  • understand the phenomena in the iron core, coils and permanent magnets in electrical machines,
  • calculate the physical quantities of the magnetic, electric and thermal fields in the electric machine,
  • calculate magnetic, electrostatic and thermal fields with modern computer tools based on the finite element method,
  • evaluate geometrical dimensional connections for the proper operation of electrical machines,
  • design electric machines with permanent magnets and asynchronous machines.

Reference nosilca

  1. VUKOTIĆ, Mario, MILJAVEC, Damijan. Design of a permanent-magnet flux-modulated machine with a high torque density and high power factor. IET electric power applications, ISSN 1751-8660, 2016, vol. 10, iss. 1, str. 36-44.
  2. VIDMAR, Gregor, MILJAVEC, Damijan. A universal high-frequency three-phase electric-motor model suitable for the delta and star winding connections. IEEE transactions on power electronics, ISSN 0885-8993, Aug. 2015, vol. 30, no. 8, str. 4365-4376.
  3. VIDMAR, Gregor, MILJAVEC, Damijan, AGREŽ, Dušan. Measurement and evaluation of EDM bearing currents by the normalized Joule integral. Measurement science & technology, ISSN 0957-0233, 2014, vol. 25, no. 7, str. 1-10.
  4. GOTOVAC, Gorazd, LAMPIČ, Gorazd, MILJAVEC, Damijan. Analytical model of permeance variation losses in permanent magnets of the multipole synchronous machine. IEEE transactions on magnetics, ISSN 0018-9464, Feb. 2013, vol. 49, no. 2, str. 921-928.
  5.  JEREB, Peter, MILJAVEC, Damijan. Vezna teorija električnih strojev. 1. izd. Ljubljana: Fakulteta za elektrotehniko, 2009.

Study materials

  1. Machines, ISBN-13: 978-1118581575 ISBN-10: 1118581571 Edition: 2nd December 31, 2013
  2. Bianchi Nicola: Electrical machine analysis using finite elements, Boca Raton : Talor & Francis, cop. 2005.
  3. Željeznov, Miljutin: Osnove teorije elektromagnetnega polja, Ljubljana, FE, 1981.
  4. Anton R. Sinigoj: ELMG, Ljubljana, FE, 1996.
  5. A Monti, F Ponci, M Riva: Electrical machine theory through finite element analysis, 2007.
  6. J. R. Hendershot, T.J.E. Miller: Design of brushless permanent magnet motors, Clarendon press 1994.
  7. Jereb Peter, Damijan Miljavec: Vezna teorija električnih strojev, Založba FE in FRI 2008
  8. Drago Dolinar, Štumberger Gorazd: Modeliranje in vodenje elektromehanskih sistemov,FERI, Maribor, 2002
  9. Drago Dolinar, Peter Jereb: Splošna teorija električnih strojev, FERI, Maribor,1995. Maribor,1995Zagradišnik Ivan, Slemnik Bojan: Električni rotacijski stroji, Maribor, 2001.
  10. Damijan Miljavec, Peter Jereb: Električni stroji – temeljna znanja, Ljubljana, 2016.Juha Pyrhonen, Tapani Jokinen, Valeria Hrabovcova: Design of Rotating Electrical

Bodi na tekočem

Univerza v Ljubljani, Fakulteta za elektrotehniko, Tržaška cesta 25, 1000 Ljubljana

E:  dekanat@fe.uni-lj.si T:  01 4768 411