Subject description - A1M14SP2

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A1M14SP2 Electric Machinery and Apparatus 2
Roles:P, V Extent of teaching:2+2L
Department:13114 Language of teaching:CS
Guarantors:  Completion:Z,ZK
Lecturers:  Credits:5
Tutors:  Semester:Z


Contacts and semiconductor switching apparatus in LV networks. Basic topology of 3-phase switches and power load of its components. Power switches and systems with progressive semiconductor devices and its control circuits. Protective circuits of semiconductor switching devices. Electric apparatus testing. Continue. Fundamentals of general theory of electric machine. Magnetic field. Fundamentals of commutation. Transformer, efficiency, volt drop. Transient phenomena - switch to the network, cut-off. Mathematical model of synchronous and induction machine. Rotating magnetic field. Induction machine, starting and speed control. Magnetic field harmonics and their influence. Single-phase induction motor. Operation of the synchronous machine on the network. Torque, stability, overload capacity. Transient phenomena, cut-off

Course outlines:

1. Low voltage contacts switching apparatus properties and application ability.
2. Components of semiconductor switching devices.
3. Single- phase semiconductor switches with thyristors and GTO thyristors, control circuits.
4. Semiconductor switches with bipolar, MOS and IGBT transistors and its control circuits.
5. Three- phase semiconductor switches topology, components voltage and current dimensioning
6. Softstarters, semiconductor switches protecting circuits.
7. Electrical apparatus testing.
8. Principles of electromechanical energy conversion. Theorie of general electric machine, mathematical model
9. Magnetic field. Fundamentals of DC machine commutation. Armature reaction
10. Winding of AC rotating machines, rotating magnetic field
11. Starting and speed control of induction machine. Single-phase induction motor
12. Mathematical model of the synchronous and induction machine, d,q,0-transformation
13. Operation of the synchronous machine to the network, torque, stability, overload capacity
14. Transient phenomena of synchronous generator, cut-off

Exercises outline:

Lab- exercises can be united to two session blocks.
1. Organization of lab exercises, work safety in the lab, laboratory rules, first tasks preparation.
2. Relay breaking properties in LV DC circuit.
3. Fuses current limiting characteristics measurement.
4. Residual current circuit breaker breaking characteristics measurement.
5. Dynamic making and breaking characteristics of IGBT switch measurement.
6. Switching characteristics of single-phase zero crossing switch measurement.
7. A single-phase thyristor and triacs switch control circuit application.
8. Magnetic field in the air gap of DC machine. No-load characteristic
9. Three-transformer winding connection, vector angle
10. Determination of an induction motor parameters by the measurement
11. Induction motor loading, circle diagram
12. No load- and short circle measuring of a synchronous machine
13. Determination of a synchronous machine model parameters by the measurement
14. Corrective measurments, evaluation of measure protocols. Credit


1. Chapman, S. J. Electric Machinery fundamentals. McGraw-Hill, Inc.. 1985
2. Flurscheim, C.,H., Power Circuit Breaker, Theory and Design. IEE.1982
3. Slade,G.,P.: Electrical Contacts, Principles and Applications, Marcel Dekker,Inc.
NewYork 1999


Active participation on laboratory measurement, document administration in due form, measure result processing, submit of test reports


Subject is included into these academic programs:

Program Branch Role Recommended semester
MPIB Common courses V
MPKME1 Wireless Communication V 1
MPKME5 Systems of Communication V 1
MPKME4 Networks of Electronic Communication V 1
MPKME3 Electronics V 1
MPKME2 Multimedia Technology V 1
MPEEM1 Technological Systems P 1
MPEEM3 Electrical Power Engineering P 1
MPEEM2 Electrical Machines, Apparatus and Drives P 1
MPKYR4 Aerospace Systems V 1
MPKYR1 Robotics V 1
MPKYR3 Systems and Control V 1
MPKYR2 Sensors and Instrumentation V 1

Page updated 10.7.2020 17:51:49, semester: Z,L/2020-1, L/2019-20, Send comments about the content to the Administrators of the Academic Programs Proposal and Realization: I. Halaška (K336), J. Novák (K336)