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

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    Electrotechnics

    A tantárgy neve magyarul / Name of the subject in Hungarian: Elektrotechnika

    Last updated: 2021. március 17.

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


    		BSc Electrical Engineering
    Course ID Semester Assessment Credit Tantárgyfélév
    VIVEAB00 3 3/0/1/f 5  
    3. Course coordinator and department Dr. Veszprémi Károly,
    4. Instructors

    Dr. István Kiss assoc. prof., Department of Electric Power Engineering 

    Dr. László Farkas,  assoc. prof., Department of Electric Power Engineering 

    Dr. László Számel, assoc. prof., Department of Electric Power Engineering 

    5. Required knowledge Physics, Signals and systems
    6. Pre-requisites
    Kötelező:
    ((TárgyEredmény( "BMEVIHVA109" , "jegy" , _ ) >= 2
    VAGY
    TárgyEredmény( "BMEVIHVAA00" , "jegy" , _ ) >= 2)

    ÉS NEM ( TárgyEredmény( "BMEVIVEA201", "jegy" , _ ) >= 2
    VAGY TárgyEredmény("BMEVIVEA201", "FELVETEL", AktualisFelev()) > 0) )


    ÉS (Training.Code=("5N-A7") VAGY Training.Code=("5N-A7H") VAGY Training.Code=("5NAA7"))

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

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

    Ajánlott:

    Physics 1-2, Signals and systems 1-2

    7. Objectives, learning outcomes and obtained knowledge To teach those knowledge in Electrotechnics, which is necessary for every electrical engineering student. It provides foundation to subject Electrical Energetics and the Electrical energetics specialisation.
    8. Synopsis

    Basic things about Electritechnics:

    History. Electricity as energy carrier. AC, DC Current systems. Multiphase systems.

    Practical circuit calculation methods

    Definition of the active, reactive power in single phase and 3-phase systems. Calculations with instantaneous values and phasors. Positive directions. Definition of the power sign. Y-D conversion. Nominal values. Per-unit system.

    Practical calculation methods of energy converters

    Calculation methods of magnetic circuits. Symmetrical components method. Three-phase vectors.

    Transformers

    Magnetic materials. Hysteresis and eddy-current losses. Induced voltage. Excitation balance law. Equivalent circuit and its parameters. Phasor diagram. No-load and short-circuit. Definition of the DROP. 3-phase transformers, connections, phase-shift, parallel connection.

    Magnetic field of the electromechanical energy converters

    Magnetic fields of the electrical machines: stationary, pulsating and rotating field. Generation of the rotating field. Torque development. Frequency condition.

    Operation principles of the basic electromechanical energy converters

    3-phase synchronous machine. Condition of the steady-state torque. Synchronous speed. Cylindrical synchronous machine. Equivalent circuit. Pole-voltage, armature voltage, synchronous reactance.

    3-hase induction machine. Condition of the steady-state torque. Slip-ring and squirrel-cage rotor. The slip. Equivalent circuit.

    The DC machine. The commutation.

    Power electronics, electrical drives

    Basic converter connections. Electrical drives: starting, braking, speed modification.

    Electrotechnical environment protection

    Electromagnetic compatibility (EMC). Low and high frequency effects. Electrostatic discharge. Electromagnetic impulses.

    Electrical safety regulations

    Basics, methods, limits, measurements.

    Electrical energy storage

    Chemical, electrical, magnetic, mechanical energy storage. Fuel-cells.

    Electrotechnical applications, trends

    Requirements of sustainable development. Application of alternative energy sources. Alternative electrical vehicles. New materials and technologies. Superconductivity.

    Laboratory practices:

    ·         Investigation of high-voltage discharges.

    ·         Electric shock protection.

    ·         The transformer.

    ·         Electrical rotating machines.

    ·         Non-conventional energy converters.

    9. Method of instruction 4 lectures per week,  5 laboratory excercises
    10. Assessment

    Two midsemester tests. 5 laboratory exercises.

    The semester mark is formed from the results.

    11. Recaps

    One laboratory exercise can be repeated.

    One-one repeated test for both midterm tests during the semester. One test can have one more repeated on the repetition week.

     

    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

    70

    Preparation for contact hours

    20

    Preparation for the midterm

    30

    Learning at home

     

    Preparation for the measurements

    30

    Homework assignments

    0

    Preparation for the exam

    0

    Total workload

    150
    15. Syllabus prepared by

    Dr.Károly Veszprémi Professor, Department of Electric Power Engineering

    Dr.István Vajda Professor,  Department of Electric Power Engineering

    Dr.István Berta Professor,  Department of Electric Power Engineering