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Electromechanics

Elektromechanika
A tantárgyleírás hatályossága
Hatályosság kezdete:
2026. March 21.
Hatályosság vége:
—
Subject name (Hungarian, English)
Elektromechanika
Electromechanics
Subject code BMEVIAUA008
Subject type —
Training Level —
Course types and hours (weekly/semester)
Course type lecture tutorial laboratory
hours (weekly) 2 1 1
type (linked/independent) — derived course derived course
Assessment type vizsga
Credits 4
Subject coordinator
DR. Hamar János Krisztián
position: egyetemi docens
Responsible department
Automatizálási és Alkalmazott Informatikai Tanszék
https://www.aut.bme.hu
Faculty Villamosmérnöki és Informatikai Kar
Subject website http://www.get.bme.hu/index.php?mid=ELME&lang=en
Primary curriculum type —
Direct prerequisites – Strong prerequisite none
Direct prerequisites – Weak prerequisite none
Direct prerequisites – Parallel prerequisite none
Direct prerequisites – Milestone prerequisite none
Direct prerequisites – Exclusion none

Objectives

Programme

1-2 week: Transformer. Construction. Operation. Equivalent circuit. Phasor diagram. Operation modes: no-load; short circuit, parallel operation. Applications.

2-3 week: Electromechanical Converters. Overview. Basic operation principle. Relation between power and size.

4-5 week: Rotating magnetic field (RMF). Mechanically rotated MF. Electrically rotated MF. Induction machine. Construction. Operation. Slip. Torque-speed characteristic. Motoring, generating, operation. Equivalent circuit. Power, torque relations. Efficiency. Kloss-formula. Applications.

6 week: Synchronous machine. Construction. Operation. Equivalent circuit. Phasor diagram. Torque-load angle relation. Motoring, generating operation. Operation in Power Plant.

7-8 week: Direct Current machine. Operation principle. Mechanical rectification-commutator. Construction.  Induced voltage. Torque production. Motoring-generating operation. Excitation modes. Efficiency. Special machines: Servo-motors, step-motors, linear motors, brushless DC motors, tachogenerators, selsyns.

9-10 week: Transient phenomena. Dynamic process in one and two energy-storage circuits with DC and AC inputs. Initial conditions. Behavior of autonom circuit and response for forced inputs. Roots in complex-plane. Pspice-program. Applications.

11-12 week: Power electronics. Components. Electric switches. Rectification. AC-AC converters. DC-DC converters. Inverters: voltage and current inverters. Uni-and bidirectional power flow. One-two-four quadrant operation. Applications.

13 week: AC and DC electric drives. Speed change by: rotor resistance, pole number, supply frequency. Starting methods change of rotating direction. Braking methods.

14 week: Electric network. Power plant, grid, substation, consumers. Active, reactive power change. Electric are. Switches. Electric safety measures.

The materials of practice and laboratory measurements are fitted to those of lectures. 

The material is based on solid physical foundation. It is selected and treated in order to understand and solve the problems met in practice by the non-electrical engineers as well. The most salient topic is lectromechanical conversion but overview of electric drives, transients, power electronics, electric networks are included as well. 

Learning outcomes

Ez a tantárgy a KKK rendeletben meghatározott, következő kompetenciák fejlesztését szolgálja:

Knowledge

No learning outcomes recorded.

Skills

No learning outcomes recorded.

Attitudes

No learning outcomes recorded.

Autonomy and responsibility

No learning outcomes recorded.

Oktatási módszertan

Lectures, examples classes, homework, laboratories.

Tanulástámogató anyagok

Online források
E.Fitzgerald,Ch.Kingsley,Jr., S.D.Umans: Electric Machinery, Fourth Edition, McGraw-Hill, New York, 1992, ISBN 0-17-0707708-3;  ; H.Elschner, A.Möschwitzer: Einführung in die Elektrotechnik, Elektronik, VEB Verlag Technik, Berlin, 1987.; S.J.Chapman Electric Machinery Fundamentals, McGraw-Hill, New York, 1985, ISBN 0-07-010662-2; P.C.Kraause: Analysis of Electric Machinery, McGraw-Hill, ISBN 0-07-035436-7; S.E.Lyshevski: Electromechanical Systems, Electric Machines and Applied Mechatronics, CRC Press, London, 2000, ISBN 0-8493-2275-8; Richard C.Dorf: The Electrical Engineering, Handbook CRC Press, London, 1993, ISBN 0-8493-0185-8; Ned Mohan, Tore M.Underland, William P.Robbins: Power Electronics, Converters, Applications and Design Second Edition, John Wiley & Sons, Inc., New York, 1995, ISBN 0-471-58408-8; D.W. Novotny, T.A. Lipo: Vector Control and Dynamics of AC Drives, Clarendon Press, Oxford, 1997, ISBN 0 19 856439 2; A. Veltman, D.W. J. Pulle, R.W. De Doncker: Fundamentals of Electrical Drives, Springer, 2007. ISBN 978-1-4020-5503-4; Ch. Fraser: Integrated Electrical and Elektronic Engineering for Mechanical Engineers, J. Milne McGraw-Hill, New York 1994, ISBN 0-07-707973-6

Recommended preliminary knowledge for completing the subject

Knowledge type competencies
(azon előzetes ismeretek összessége, amelyek megléte nem kötelező, de a tantárgy eredményes teljesítését nagyban elősegíti)
Mathematics: Linear Algebra, Differential Equations Basics of Electrical Engineering 
Skill type competencies
(azon előzetes képességek és készségek összessége, amelyek megléte nem kötelező, de a tantárgy eredményes teljesítését nagyban elősegíti)
nincs
Recommended (non-compulsory) preliminary competencies
(azon ajánlott (nem kötelező) előzetesen megszerzendő kompetenciák összessége, amelyek jelentősen hozzájárulnak a tantárgy eredményes teljesítéséhez)
Mathematics: Linear Algebra, Differential Equations Basics of Electrical Engineering 
General rules
Requirements: a.) Lecturing interval: Requirements to complete the semester and to earn credit, mark: 1. Completing the homework assignments and submitting them by dead-line 2. Completing the 6 laboratory measurements. Only two of them can be postponed to the retake week. The laboratory measurements begin with written tests. If the test is unsuccessful, the laboratory measurement cannot be continued.   b.) Examination interval: In the first part of the written examination 6 questions of lecture note: "Basic Questions - Electromechanics" have to be answered. Each correct answer is worth 2 points. The questions and answers are available on our homepage: http://get.bme.hu. In the second part of the examination theoretical and practical questions shall be answered and tasks shall be solved. The written examination lasts 110 minutes.   The final marks are offered as follows: 0-39     failed (1) 40-54   satisfactory (2) 55-69   average (3) 71-84   good (4) 85-100   excellent (5) Students earning 40 points or more have the possibility to improve their mark. Additional possibilities: Homework can be submitted till the end of the retake week. Additional fee applies. Maximum 2 laboratory measurements may be postponed to the retake week.
Assessment methods
In-term assessments

No detailed assessments provided.

Weight of in-term assessments

No weights provided.

Exam-period assessments

No detailed assessments provided.

Weight of exam elements

No weights provided.

Grade calculation

No grade thresholds provided.

Attendance requirements

No attendance requirements provided.

Rules for retake and resubmission

Not provided.

Short description

Not provided.

Detailed description

Not provided.

Recommended courses
Obligatory: Basics of Electrical Engineering, BMEVIAU007
Workload to complete the subject

No workload breakdown provided.

Validity of subject requirements
Requirements valid from:
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Requirements valid until:
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Curriculum placement

No curriculum placements recorded for this subject version.