Hijjawi Faculty for Engineering Technology
ْْْElectric Power Engineering Department
EPE 350: Transformers & DC Machines
(3 Cr. Hr.)
Syllabus
Summer Semester 2012/2013
Instructor
Dr. Mohammad Momai
mohammadh@yu.edu.jo
Tel # 72111111 Ext. 4557
Office room Hijjawi new buding 506
Lectures hours 10:30- 11:30 am
Sun, Mon,Tues. wed, thrs.
Office hours: Daily 12-1 pm
Catalog Data
Introduction to energy conversion and magnetic circuits, transforms (single phase, three phase, auto-transformer): construction,
regulation, connections, special connections: T-connection, Scot connection. DC – machines: construction, types, windings, EMF
equation, torque equation, armature reaction, power flow control and dynamics
Course Goals & Objectives
 To study the basic components, construction and principle of operation of electric machines, transformer , dc
machines
 To study the single phase and three phase transforms, equivalent circuit, practical transformers voltage
regulation efficiency, harmonics, per-unit system and transformer group connections,
 To study the various types of dc electric machines.
 examine the characteristics, equivalent circuits, performance and methods of control of electric machines
Textbook
Electric Machinery Fundamentals, S. J. Chapman, McGraw-Hill, 4th Ed., 1999.
References
Electric Machines: Theory, Operation, Applications, Adjustment, and Control, Charles, I. Hubert, Macmillan, 1991
Direct and Alternating Current Machinery, J. Rosenblatt, M. H. Friedman, Merrill, 2 nd Ed., 1984
an intrioducton to electrical machine and transformer , George McPherson, Roberto D, Laramore, Jon Willey & Sons 1990
Prerequisites by Topic
1. EPE 222 – Electric Circuit 2
Course Outcomes
A student completing this course should at a minimum be able to:
1. Draw an analogy between magnetic and electric circuits and apply common electric circuit's laws
and theorems in the analysis of magnetic circuits.
2. Understand the practical significance of magnetic circuits
3. understanding the transformer equivalent circuit and it is various parameter
a. Calculate the three phase transformer turns ratio, voltage regulation and efficiency, maximum
efficiency
4. use the per unit system in transformer calculation for three phase system
5. study the autotransformer and its application
6. study the group connection and the dot system for the three phase transformerd
7. Understand the basic principles of electromechanical energy conversion
8. Recognize and describe the basic components, construction and principle of operation of electric
machines.
9. Differentiate between the various types of electric machines
10. Understand the process of deriving equivalent circuits of the various types of electric machines.
11. Use the equivalent circuit of an electric machine to predict machine's performance
12. Apply appropriate methods to control the operation of electric machines
13. Use appropriate experimental methods to determine the parameters of equivalent circuits of electric
machines
14. Choose the appropriate electric machine for specific application
15. Recognize the significance of electric machines ratings
16. Recognize the advantages and limitations of the various types of electric machines
17. Classify various electric machines according to their principle of operation, type and field of
application
18. Define the role of electric machines in industrial development and recognize the impact of these
machines on human life and civilization
19. Acquire basic knowledge of electric machine design
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Hijjawi Faculty for Engineering Technology
ْْْElectric Power Engineering Department
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Course Topics
Introduction to electric machinery principles, the magnetic filed, magnetic circuits, magnetic behavior of ferromagnetic materials,
power losses in ferromagnetic materials, faraday’s law-induced voltage from a time changing, production of induced force on a
wire, induced voltage on a conductor moving in a magnetic field
Transformers, types and constructions, single-phase ideal transformer, power calculation, reflected impedance, and analysis of
single-phase ideal transformer, single-phase real transformer, magnetizing current, current ration, and dot convention, exact and
approximate equivalent circuits, calculation of equivalent circuit parameters, voltage regulation and efficiency, autotransformer
Dc machinery fundamentals, basic principles of operation, construction, lap winding, and wave winding, commutation in dc
machines and armature reaction, internal generated voltage and induced torque equations, types of dc machines, power flow and
losses of dc machines
Dc generators, equivalent circuit, magnetization curve of a dc generator, dc separately excited generator, dc shunt generator, dc
series generator, dc compound generator, terminal characteristics and voltage control of dc generators, efficiency calculation of dc
generators, parallel operation of dc generators
Dc motors, equivalent circuit, dc separately excited motor, dc shunt motor,dc series generator, dc compound generator,
characteristics and speed control of dc motors, efficiency calculations of dc motors, dc motor starting
Computer Usage
Several computer assignments using Matlab will be given during the semester. The assignments will require students to use
Matlab/simulink power system sudden Quizzes may be given during this course.
Grading Policy
Marks
Exam Date
Exam #1
Grading Component
20%
01/7/2013
Exam #2
20%
21/7/2013
Assignments and Quizzes
10%
Final Exam
50%
TOTAL
To be announced by
the registrar
100%
Assigned Problems
Homework problems from the textbook will be assigned regularly. Non-textbook problems will also be added to the assignment occasionally.
Homework Collaboration, Grading, Etc.
Each homework assignment will be graded on a 10 point scale. Your overall homework grade will be based on the average of approximately
ten homework/quiz grades. All work must be shown to receive full or partial credit on any assignment (homework, tests, quizzes, etc.).
Always provide an equation even if you have a special calculator for computing an answer. Homework is intended to improve your
understanding of course material by giving you an opportunity to apply the principles and techniques presented in the course. You may discuss
problem approaches and verbally compare solutions with other students. You may turn in only your own work. The sharing of written,
ungraded homework solutions is not permitted.
Course Policies
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Attend all lectures. There will be many in-class assignments and some unannounced quizzes. You should bring your textbook and
a calculator to class with you. You will find these very helpful on the unannounced, open book, in-class quizzes, and when
reference to interest tables is required.
All work must be shown to receive full or partial credit on any assignment (tests, quizzes, etc.).
No homework will be accepted after the class period in which it is due. Because quizzes are generally unannounced, no make-up
quizzes will be given.
Please arrange if you must miss class for religious holidays beforehand.
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