ELECTRICAL MACHINES 1 
ELECTRICAL ENGINEERING


Semester

Teaching Methods

Credits 

5

Lecture

Rec.

Lab.

Project Work

HW


Other

Total

Credit

ECTS Credit


44 
 
 
20 
20 

16 
100 
3 
4 

Language

English 

Compulsory / Elective

Compulsory


Prerequisites

(63212)


Course Contents

Single phase and three phase transformers. DC machinery fundamentals. Dc generators. Parallel operation of DC generators. DC motors. Calculations of DC generators and motors.


Course Objectives

To introduce the construction, principle of action, equivalent circuits, characteristics, and different calculations of transformers and DC machines.


Learning Outcomes and Competences

Understanding the principle of transformers and DC machines. Learning different characteristics of DC machines to control them. Solving practical and design perspective problems related to transformers and DC machines.


Textbook and /or References

Electric machinery fundamentals. Stephen J. Chapman. McGrawHill. Electric machinery. A.E.Fitzgerald, Charles Kigsley, and A. Kusko. McGrawHill.


Assessment Criteria


If any,mark as (X)

Percent (%)


Midterm Exams

X

40 

Quizzes




Homeworks

X 
10 

Projects




Term Paper




Laboratory Work




Other




Final Exam

X

50 

Instructors

Assist. Prof. Dr. Maher Khammash, maherkh@najah.edu 

Week

Subject


1 
TRANSFORMERS: Types and construction of transformers, the ideal transformer. 

2 
REAL SINGLE PHASE TRANSFORMERS: Theory of operation, the equivalent circuit, calculation of voltage regulation and efficiency. 

3 
THE PER UNIT SYSTEM OF A TRANSFORMER: calculation of different practical problems. The Autotransformer. 

4 
THREE PHASE TRANSFORMERS: different types, calculations. Transformer ratings. 

5 
DC MACHINERY FUNDAMENTALS: construction of DC machines, induced voltage and torque in a single turn, commutation and armature reaction. 

6 
FUNDAMENTALS OF REAL DC MACHINES: the internal generated voltage and induced torque equations in real DC machines, power flow and losses in real DC machines. 

7 
MIDTERM EXAM 1 

8 
DC GENERATORS: different types, the magnetization curve, the separately excited DC generator. 

9 
DC GENERATORS: the shunt DC generator, the series DC generator, solving different problems. 

10 
DC GENERATORS: the cumulatively compounded DC generator, the differentially compounded generator. Parallel operation of DC generators.Solving different problems. 

11 
DC MOTORS: different types, the separately excited DC motor, and the shunt DC motor equivalent circuits, solving different problems. 

12 
DC MOTORS: the sires DC motor, the compounded motor. DC motor efficiency calculations. 

13 
MIDTERM EXAM II 

14 
STARTING OF DC MOTORS: DC motors starting circuits. 