Course Details

ELE477 - Electric Machines II

2023-2024 Summer term information
The course is not open this term
ELE477 - Electric Machines II
Program Theoretýcal hours Practical hours Local credit ECTS credit
Undergraduate 3 0 3 6
Obligation : Elective
Prerequisite courses : ELE361
Concurrent courses : ELE479
Delivery modes : Face-to-Face
Learning and teaching strategies : Lecture, Question and Answer, Problem Solving, Other: This course must be taken together with ELE479 ELECTRIC MACHINES LABORATORY II.
Course objective : This course is designed to equip seniors with knowledge about the operating characteristics of three-phase and single-phase AC machines widely used in the industry and, their performance analyses based on steady-state equivalent circuit models and phasor diagrams.
Learning outcomes : A student who completes the course successfully will Know the three-phase distributed winding principles, nature of the magnetic fields produced in three-phase ac machines, Learn basic concepts on three-phase induction machines and synchronous machines, Apply the techniques learned in the class to derive the performance characteristics of three-phase machines based on steady-state equivalent circuit models and phasor diagrams, Be aware of speed control techniques applied to three-phase ac machines, Learn operating principles of single-phase AC motors.
Course content : Introduction, Three-Phase Distributed Winding Principles, Rotating Magnetic Fields, Winding Factors, Induced EMF, Three-Phase Induction Machines (Equivalent circuit model, operation in motoring, generating and braking modes, blocked-rotor and no-load tests, torque-speed characteristics, ratings and efficiency, starting methods, speed control), Synchronous Machines (generator and motor operation, cylindrical and salient-pole rotor types, equivalent circuit model and phasor diagrams, open- and short-circuit tests, excitation systems and voltage regulation, applications). Single-phase induction motors (equivalent circuit model, steady-state operation, starting, Split-phase motors, capacitor type and shaded pole motors.
References : Electric Machinery Fundamentals, Chapman, 3rd Ed., McGraw-Hill; Electric Machinery, Fitzgerald, Kingsley, Umans, 5th Ed., McGraw-Hill; Electric Machines, Slemon, Straughen, Addison Wesley; Principles of Electrical Machinery and Power Electronics, Sen, John Wiley; Electromechanics and Electric Machines, Nasar, Unnewehr, 2nd Ed., John Wiley.
Course Outline Weekly
Weeks Topics
1 Introduction
2 Three-phase distributed winding principles, rotating magnetic fields, winding factors, induced emfs
3 Three-phase induction machines - operation principles, steady-state equivalent circuit model
4 Torque-speed characteristics of induction motors
5 Three-phase induction machines - Blocked-rotor and no-load tests
6 Motoring, generating and braking modes of operation of induction machines
7 Ratings and efficiency, starting methods of induction motors
8 Midterm Exam
9 Speed control methods of induction motors - examples
10 Synchronous machine - operation principles, cylindrical and salient rotor types
11 Equivalent circuit model and phasor diagrams of synchronous machine
12 Open- and short-circuit test of synchronous machines, excitation systems and voltage regulation
13 Single-phase induction motors: equivalent circuit model, steady-state operation, starting
14 Split-phase motors, capacitor type and shaded pole motors
15 Preparation for Final exam
16 Final exam
Assessment Methods
Course activities Number Percentage
Attendance 0 0
Laboratory 0 0
Application 0 0
Field activities 0 0
Specific practical training 0 0
Assignments 5 10
Presentation 0 0
Project 0 0
Seminar 0 0
Quiz 0 0
Midterms 1 40
Final exam 1 50
Total 100
Percentage of semester activities contributing grade success 50
Percentage of final exam contributing grade success 50
Total 100
Workload and ECTS Calculation
Course activities Number Duration (hours) Total workload
Course Duration 14 3 42
Laboratory 0 0 0
Application 0 0 0
Specific practical training 0 0 0
Field activities 0 0 0
Study Hours Out of Class (Preliminary work, reinforcement, etc.) 14 3 42
Presentation / Seminar Preparation 0 0 0
Project 0 0 0
Homework assignment 5 4 20
Quiz 0 0 0
Midterms (Study Duration) 1 25 25
Final Exam (Study duration) 1 25 25
Total workload 35 60 154
Matrix Of The Course Learning Outcomes Versus Program Outcomes
Key learning outcomes Contribution level
1 2 3 4 5
1. Possesses the theoretical and practical knowledge required in Electrical and Electronics Engineering discipline.
2. Utilizes his/her theoretical and practical knowledge in the fields of mathematics, science and electrical and electronics engineering towards finding engineering solutions.
3. Determines and defines a problem in electrical and electronics engineering, then models and solves it by applying the appropriate analytical or numerical methods.
4. Designs a system under realistic constraints using modern methods and tools.
5. Designs and performs an experiment, analyzes and interprets the results.
6. Possesses the necessary qualifications to carry out interdisciplinary work either individually or as a team member.
7. Accesses information, performs literature search, uses databases and other knowledge sources, follows developments in science and technology.
8. Performs project planning and time management, plans his/her career development.
9. Possesses an advanced level of expertise in computer hardware and software, is proficient in using information and communication technologies.
10. Is competent in oral or written communication; has advanced command of English.
11. Has an awareness of his/her professional, ethical and social responsibilities.
12. Has an awareness of the universal impacts and social consequences of engineering solutions and applications; is well-informed about modern-day problems.
13. Is innovative and inquisitive; has a high level of professional self-esteem.
1: Lowest, 2: Low, 3: Average, 4: High, 5: Highest
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