Electrical Machines and Applications

A tantárgy neve magyarul / Name of the subject in Hungarian: Villamos gépek és alkalmazások

Last updated: 2021. március 17.

Budapest University of Technology and Economics
Faculty of Electrical Engineering and Informatics


BSc Electrical Engineering

Sustainable Power Engineering Specialisation


Course ID Semester Assessment Credit Tantárgyfélév
VIVEAC01 5 2/1/0/v 4  
3. Course coordinator and department Dr. Veszprémi Károly,
4. Instructors

Dr.Károly Veszprémi Professor, Department of Electric Power Engineering


5. Required knowledge Elektrotechnics, power engineering
6. Pre-requisites
Kötelező:
((Szakirany("AVINsmartgrid", _) VAGY
Szakirany("AVINvillgephajt", _) VAGY
Szakirany("AVINvillszigr", _) VAGY
Szakirany("AVIvillen", _))VAGY
Szakirany("VIABV-SUSTEN", _) )




ÉS NEM ( TárgyEredmény( "BMEVIVEA334" , "jegy" , _ ) >= 2
VAGY
TárgyEredmény("BMEVIVEA334", "FELVETEL", AktualisFelev()) > 0)

A fenti forma a Neptun sajátja, ezen technikai okokból nem változtattunk.

A kötelező előtanulmányi rend az adott szak honlapján és képzési programjában található.

7. Objectives, learning outcomes and obtained knowledge

To teach those knowledge in the field of electrical machines and drives, which are necessary in the Electrical Energetics specialisation. Presents the practical calculation methods, the operation of the electrical machines systems. Describes the usual, modern and prospective applications. 

8. Synopsis

Transformers

Single-phase and 3-phase transformers. Steady-state and transient operation. Unbalanced load of the 3-phase transformers. Special transformers.

Windings of the rotation machines, torque development

Concentrated and distributed winding (slots). The induced voltage, the developed air-gap filed, the stray field. Force and torque development and calculation.

Induction machines

Equivalent circuit and torque development. Deep-slot and double-slot rotors. Effect of the spatial harmonics. Starting and speed modification methods. Asymmetric operation, stator and rotor asymmetry. Single-phase and auxiliary-phase machines.

Synchronous machines

Cylindrical rotor case: Equivalent circuit and torque development. Motor and generator operation. Stability. Effect of the salient-pole. Reluctance machines. Permanent-magnet machines. Synchronous and induction linear machines.

DC machines

Armature windings. The role of the auxiliary and compensating windings. Separate, parallel and mixed excitation, characteristics. Starting and speed modification.

Modern calculation methods

Finite element method (FEM). Poisson equation. Lagrange interpolation polynom. Dirichlet and Neumann conditions. Simple 2D promlem. Presentation of the QuickField, Flux2D and Motorpro, MotorCad software.

Applications of electrical machines

Household electrical machines. Electrical machines in consumer electronics. Electrical machines in vehicles. Magnetically levitated trains. Superconducting generators and motors. Servo motors.

Kinetics of electrical drives

Reduction of torques and masses to common shaft. Motion equation of the electrical drives. Stability criterion of drives. Definition of time constants.

Design of electrical drive

Protection levels. Operation condition of electrical motors. Thermal conditions. Selection of electrical motors.

Applications of electrical drives

Speed modification and braking methods of DC urban electrical vehicles. Voltage source inverter-fed induction machine driven trolley-bus. Semiconductor-based DC drive driven trains. Inverter-fed trains. Wind generators.

The practices:

·         Calculation of electromagnetic forces

·         Single-phase transformers

·         Parallel operation of transformers

·         Connections of transformers

·         3-phase transformers

·         AC windings

·         Calculation of the induced voltage

·         Steady-state operation of induction machines

·         Starting of induction machines

·         Steady-state operation of synchronous machines

9. Method of instruction 2 lectures, 1 practice per week
10. Assessment

During the semester: passing one midterm test

In the exam period: written exam with possible oral exam improvement

11. Recaps Midterm test can be rewritten once during the semester and once during the repeat period.
12. Consultations At time and date agreed by the lecturers. 
13. References, textbooks and resources

Lecture notes from the webpage of the department.

14. Required learning hours and assignment

Contact hours

42

Preparation for contact hours

14

Preparation for the midterm

15

Learning at home

 

Preparation for the practices

 10

Homework assignments

0

Preparation for the exam

39

Total workload

120

15. Syllabus prepared by

Dr.Károly Veszprémi Professor, Department of Electric Power Engineering

Dr.István Vajda Professor,  Department of Electric Power Engineering