Course detail

Production of Electrical Machines 1

FEKT-MKC-SS1Acad. year: 2020/2021

Magnetic field of m-phase winding, winding factors for fundamental and other harmonics of magnetic field, three-phase windings, parasitic torques and additional losses caused by harmonic components of the magnetic field, electromagnetic design of an induction motor and synchronous motor with permanent magnets, bearings of electric machines.

Language of instruction

Czech

Number of ECTS credits

5

Mode of study

Not applicable.

Learning outcomes of the course unit

Graduate of the course is able to
- describe the magnetic field in the air-gap generated by the coil and m-phase winding,
- calculate the winding factors for the first and other harmonics of magnetic field,
- design the single and double-layer windings, distributed and concentrated windings,
- describe the principle of parasitic torques and torque pulsation,
- describe the additional losses caused by harmonic components of the magnetic field,
- perform the electromagnetic design of an induction motor,
- perform the electromagnetic design of synchronous motor with permanent magnets,
- describe the bearings of electric machines, including magnetic bearings,
- prepare 2D FEM model of the induction motor and permanent magnet synchronous motor.

Prerequisites

Student should be able to
- differentiate functions of one and more variables,
- integrate functions of one variable,
- compute a freguency spectrum of continuos periodic signal,
- explain electromagnetic basic principles, solve DC, AC electric circuits with lumped parameters and magnetic circuits,
- describe the construction of induction motor, synchronous motor and DC motor,
- describe motors principle according to their electrical diagram,
- describe, modify and apply the basic design approach of magnetic circuit and winding to the permanent magnet DC motor and BLDC motor,
- calculate the parameters of the permanent magnet DC motor, BLDC motor (steady-state operation),
- draw and describe the waveform of magnetic flux density in the air-gap of permanent magnet DC motor, BLDC motor; sketch the slotting effect and the armature reaction effect,
- prepare 2D FEM model of the permanent magnet DC motor, BLDC motor under steady-state operation.

Co-requisites

Not applicable.

Planned learning activities and teaching methods

Techning methods include lectures, exercises and computer exercises. Course is taking advantage of e-learning (Moodle) system.

Assesment methods and criteria linked to learning outcomes

Requirements for completion of a course are specified by a regulation issued by the lecturer responsible for the course and updated for every.

Course curriculum

1. Magnetic field of coil and m-phase winding
2. Induced voltage, winding factors for fundamental and other harmonics of magnetic field
3. Single-layer and double-layer concentrated windings
4. Stator and rotor slotting, slot harmonics
5. Origin and possibilities of suppression of parasitic torques and torque pulsation
6. Additional losses caused by harmonic components of the magnetic field
7. Electromagnetic design of an induction motor
8. Manufacturing of induction motor
9. Electromagnetic design of synchronous motor with permanent magnets
10. Bearings of electric machines, magnetic bearings

Work placements

Not applicable.

Aims

Deepening the knowledge of design of electric machines with a focus on winding analysis and electromagnetic calculations.

Specification of controlled education, way of implementation and compensation for absences

Specification of controlled education, way of implementation of the guarantor's regulation updated for every subject.

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

HELLER, B., HAMATA, V.: Přídavná pole, síly a ztráty v asynchronním stroji. 1. vyd. Praha: Československá akademie věd, 1961, 202 s. (CS)
BRÁZDA, M., STAŇA, R.: Výpočet asynchronního motoru. Brno: Výzkumný a vývojový ústav elektrických strojů točivých, 1973, 222 s. (CS)
PETROV, G.,N.: Elektrické stroje 2. Academia, Praha 1982 (CS)

Recommended reading

CIGÁNEK,J.: Stavba elektrických strojů, SNTL 1958 (CS)
KOPYLOV,I.,P. a kol.: Stavba elektrických strojů. SNTL, Praha 1988, 688 stran, typové číslo L25-C3-IV-41f/58667, první vydání (CS)
Pyrhonen J., Jokinen T., Hrabovcova V.: Design of Rotating Electrical Machines. Wiley; 2nd edition, 2013. ISBN: 978-1118581575 (EN)
BOLDEA, I., NASAR, S.,A.: The Induction Machine Handbook. Boca Raton: CRC Press LLC, 2002. 949 p. ISBN 0-8493-0004-5 (EN)

Classification of course in study plans

  • Programme MKC-SVE Master's, 1. year of study, summer semester, compulsory

Type of course unit

 

Lecture

26 hours, optionally

Teacher / Lecturer

Fundamentals seminar

13 hours, optionally

Teacher / Lecturer

Exercise in computer lab

13 hours, optionally

Teacher / Lecturer