EE 385/EE 385 !! – Electrical Power and Machines.

Prof: Ahmed Abdalla Mohamed

Eng, Dina Mohamed

By the end of the course, students will acquire good knowledge of:

– Introduction of power system engineering.

-3-phase AC circuit – 3-phase power.

-Per unit system

-Transmission line parameters

-Distribution system

– Power factor improvement.

– 3-phase KVA short-circuit calculations

– Fundamental of power system protection

– Apply the machine theory on different kinds of electrical machines.

– Select a suitable machine type for a certain application.

– Understanding the concepts of using magnetic circuits.

– Understanding the theory of transformers operation and its applications.

– Dealing with various types of electrical machines

-Comparing between the characteristics of different types of electrical machines.

-Performing various tests on the machines.

Part 1: Electrical power system

1: Introduction of power system engineering:

Course Aim, Course outlines, Intellectual Skills, Professional Skills, Course assessment.

2: generation of power The different methods of power generation, why we need to raise the voltage in transmission using AC.

3,4: 3-phase AC circuit: Why the uses of multi-phase supply system instead of single-phase supply system, analysis of balanced 3-phase AC system, calculations of the currents, voltages and powers of the different types of three-phase system.

5,6: per unit system: What is the per unit system, causes of using it in 3-phase system, drawing one-line diagram, per unit equivalent circuit,

7,8 : Transmission: Classification of conductors, the general requirements of conductor, calculation of transmission parameters.

9 : Distribution: Classification of distribution systems, structure of low-voltage power AC and DC distribution networks, calculating the voltage drop for ac distribution.

10 : Power Factor Improvement: What is the power factor, the side effects of low power factor on different equipment, the different methods of improving power factor.

11,12: Three-phase KVA-short circuit calculations:

13,14: fundamentals of power system:

Part 2: Electrical machines

1: Introduction: Course Aim, Course outlines, Intellectual Skills, Professional Skills, Course assessment.

2,3:Magnetic circuit: Why Magnetic Circuit, Concept of a Magnetic Circuit, Examples of Magnetic Circuits, Definitions Related to Electromagnetic Field, Analogy between Electric circuit and magnetic circuit, Magnetic Circuit Calculations, Iron Losses in Magnetic Circuit.

4,5,6:Transformers: What is a transformer?, Why we need transformers, Construction of Transformer, Principle of operation, Classification of transformers, Transformer Rating and Name Plate, Voltage Regulation, Transformer Losses and Efficiency.

7,8: DC Machines: Why DC Machines, Principle of DC Machines, Construction of DC Machines. D.C. Machine Applications, Speed Control of DC Motor, Problems of starting D.C. Motors, Motor Efficiency. Why Single Phase Induction Motors, Principle of Single Phase Induction Motors, Construction of Single Phase Induction Motors, , Single Phase Induction Motors Applications,

9,10: AC Machines: Why AC Machines, Principle of AC Machines, Construction of AC Machine, Classification of AC Machines, Characteristics of A.C. Machines. AC Machine Applications, Speed Control of AC Motor, Starting of AC Motors, Motor Efficiency.

11: Single phase induction motors: Why Single Phase Induction Motors, Principle of Single Phase Induction Motors, Construction of Single Phase Induction Motors, , Single Phase Induction Motors Applications,

12: Universal Motors: Principle of Universal Motors, Construction of Universal Motors, Methods of controlling Universal Motors, Applications. Presentation

13: Stepper Motors: Principle of Stepper Motors, Construction of Stepper Motors, Stepper Motor advantages and Disadvantages, Stepper Motors Types, Motor Applications.

• Class Work: 20Marks
• LAB Work: 10 Marks
• Mid Term Exam: 20 Marks
• Final Exam: 50 Marks

1. Electrical Machinery and Power system Fundamentals, Stephen J. Chapman

2. Electrical Machines, Rajput, Firewall Media, 2006

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