Electric Machines and Transformers

Објавено: October 12, 2018
  1.    Course Title Electric Machines and Transformers
  2.    Code 3ФЕИТ02Л007
  3.    Study program ЕЕС, ЕЕУМ
  4.    Organizer of the study program (unit, institute, department) Faculty of Electrical Engineering and Information Technologies
  5.    Degree (first, second, third cycle) First cycle
  6.    Academic year/semester II/4   7.    Number of ECTS credits 6.00
  8.    Lecturer Д-р Крсте Најденкоски
  9.    Course Prerequisites

10.    Course Goals (acquired competencies):  Acquired knowledge about the principles of operation and operation of electrical machines and transformers. Competence for selection of motors, generators and transformers, according to their place in the power system, and the ability to analyze their characteristics. Knowledge of the methods for testing electric motors, generators and transformers.

11.    Course Syllabus: Introduction to electromechanical energy conversion. Materials for electrical machines and transformers. Power losses and efficiency. Heating and cooling. Loss of life.  Basic electromagnetic phenomena in machines. Determination of induced voltage. Electromagnetic torque. Magnetic field in the machines.  DC power machines. Electric motor and generator mode. Characteristics of dc machines with different excitation mode Balance of power and energy diagram.  AC machines. Asynchronous and synchronous generators and motors. Constructive characteristics. Phasor diagrams and synchronous reactances. Parallel operation.  Transformers. Types of transformers. Construction – magnetic and electrical system. Coefficient od transformation. Transformer mathematical model. No-load and short circuit regimes. Three-phase transformers. Winding schemes and vector groups. Three winding transformers.
12.    Learning methods:  Lectures, laboratory exercises, project assignments, independent assignments, home learning.
13.    Total number of course hours 3 + 1 + 1 + 0
14.    Distribution of course hours 180
15.    Forms of teaching 15.1. Lectures-theoretical teaching 45
15.2. Exercises (laboratory, practice classes), seminars, teamwork 30
16.    Other course activities 16.1. Projects, seminar papers 0
16.2. Individual tasks 0
16.3. Homework and self-learning 105
17.    Grading 17.1. Exams 0
17.2. Seminar work/project (presentation: written and oral) 0
17.3. Activity and participation 0
17.4. Final exam 100
18.    Grading criteria (points) up to 50 points     5 (five) (F)
from 51 to 60 points     6 (six) (E)
from 61 to 70 points     7 (seven) (D)
from 71 to 80 points     8 (eight) (C)
from 81 to 90 points     9 (nine) (B)
from 91 to 100 points   10 (ten) (A)
19.    Conditions for acquiring teacher’s signature and for taking final exam Success of all pre-examination activities
20.  Forms of assessment During the semester, two partial written exams are provided (at the middle and at the end of the semester, with duration 120 minutes), test from laboratory exercises For students who have passed the partial exams and the laboratory exercise test, the exam is considered passed. The other students take the final exam on whole material (duration 120 minutes). The points from the partial exams/final exam and the test are included in the final grade
21.    Language Macedonian and English
22.    Method of monitoring of teaching quality Self-evaluation
23.    Literature
23.1. Required Literature
No. Author Title Publisher Year
1 A.E.Fitzgerald, Charles Kingsley Electric Machinery McGraw-Hill 2002
2 B. S. Guru,  H. R. Hiziroglu Electric Machinery and Transformers Oxford University Press 2000
23.2. Additional Literature
No. Author Title Publisher Year
1 James H. Harlow  Electric Power Transformer Engineering  CRC Press  2003
2  R.Ramshaw  Energy Conversion: Electric Motors and Generators  The Oxford Series in Electrical and Computer Engineering  1995