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Course item: C.5
1. INFORMATION ABOUT THE COURSE
A. Basic information
Name of course
Study level
Unit running the study
programme
Study programme
Speciality
Name of teacher (s) and
his academic degree
Electrical Machines
first degree
Faculty of Telecommunication and Electrical Engineering
Electrical Engineering
Zdzisław Gientkowski, Professor, Roman Żarnowski, PhD
Introductory courses
Course of mathematics, physics, electrical engineering on
appropriate level
Prerequisites
basic knowledge of EE rules and operation on complex numbers,
solving of DC and AC circuits
B. Semester/week schedule of classes
Semester
Lectures
summer
winter
60
Classes
Laboratories
Project
Seminars
30
Field
exercises
ECTS
4
4
2. EFFECTS OF EDUCATION (acc. to National Qualifications Framework)
Knowledge
Skills
Competences
on successful completion of the course student is supposed to be able to
understand function of electric machine in drive system, to know mechanical
engineering and principles of its operation, static characteristics of basic
types of electrical machines and understand phenomena proceeded during
start-up and rotational speed control and braking.
results of the learning should be an ability to describe and analyze behavior
of electric machine in static states
on successful completion of the course student is supposed to be conscious
of problems occurring in electrical machines
3. TEACHING METHODS
multimedia lecture, laboratory
4. METHODS OF EXAMINATION
Lecture - oral exam, laboratory - doing all of lab exercises and returning reports
5. SCOPE
Lectures
Electrical machines definition and classification.
DC machines: mechanical engineering, principle of operation, armature
reaction, commutation phenomena, basic equations and static characteristics
of motors and generators.
Transformers: - 1-phase: mechanical engineering, principle of operation,
purpose, equivalent circuit diagram, no-load state, short circuit state,
calculating of equivalent circuit diagram parameters, operating with load,
losses, efficiency – 3-phase systems: mechanical engineering, vector group
of a transformer, parallel running, operation issues.
AC machines: general issues: magnetic field generation, magnetic circuit,
and windings, induced voltages in windings by sinusoidal field.
Laboratories
Induction machines: mechanical engineering, principle of operation, states of
operation, equivalent circuit diagram, calculating of equivalent circuit diagram
parameters, torque, torque versus slip characteristic, Kloss equation,
parasitic torques, rotational speed control, start-up, braking, losses and
efficiency.
Synchronous machines: mechanical engineering, principle of operation,
purpose, different types of operation. Cylindrical generator saturated
equivalent circuit diagram and phasor diagram, power and torque,
autonomous operating – basic characteristics. Not saturated generator with
distinct poles – magnetic field in generator with distinct poles, reaction in daxis and q-axis, phasor diagram, power and torque. Synchronous machine
synchronization with utility grid. Generator operations at utility grid – Vcurves. Motor operation – phasor diagram (phasor diagram at motor
operating), angle characteristics, V-curves, start-up torque – start-up methods
of synchronous machine, synchronous compensator.
Fractional horsepower machines: general characteristics and classification,
DC and AC commutator machines (1-phase), 1-phase induction machines, 2phase induction machines, synchronous machines.
Subject area of laboratory practice includes below listed issues:
 DC machine preparing to operation,
 DC separately excited generator testing,
 DC separately excited motor testing,
 magnetic field tests in DC machine,
 1-phase transformer testing - calculating of equivalent circuit diagram
parameters,
 vector group of transformer,
 autotransformer testing,
 AC machine preparing to operation,
 magnetic field tests in AC machine,
 determining of AC machine equivalent circuit diagram parameters,
 parallel running of 3-phase transformers,
 slip-ring induction motor testing,
 1-phase induction motor testing,
 induction voltage regulator testing,
 distinct pole synchronous generator at autonomous operating testing.
6. LITERATURE
Basic literature
Supplementary
literature
Edwards J. D., 1986. Electrical machines. An introduction to principles and
characteristics, Macmillan Publishing Company 2nd Edition.
Mohan N.,2012. Electric Machines an drives. A first course, Wiley.
Chapman S. J., 2004. Electric Machinery Fundamentals 4th Edition Bae
Systems Australia.
Bajorek Z., 1992. Teoria maszyn elektrycznych. PWN.
Sochocki R., 1996. Mikromaszyny elektryczne. Oficyna Wydawnicza
Politechniki Warszawskiej.
Hebenstreit J., Gientkowski Z., 2003: Maszyny elektryczne w zadaniach.
Wydawnictwo Uczelniane Akademii Techniczno-Rolniczej w Bydgoszczy.
Latek W., 1987. Maszyny elektryczne w pytaniach i odpowiedziach. WNT.
Plamitzer A.M., 1986. Maszyny elektryczne. WNT.