An Najah National University Electrical Engineering Department
Course: Electric Machines (Indust.Eng.) No. : 63391 Credit Hours: 3
Semester: 2nd/2010 Text Book: Chapmann
Course Goals: Building up of knowledge in the field of transformers and electric machines which is enough to design, analyze and evaluate such components used in different power and industrial systems
Exams: 1st 20 Marks, 2nd 20 Marks, Activity: 10 Marks, Final: 50 Marks
Instructor: Prof. Dr. Marwan Mahmoud
Course outlines
1- Introduction to Machinery Principles
- Note on Units
- Magnetic Circuits
- Magnetization Curves
2- Transformers
- Type of transformers
- The ideal transformer
- Theory of operation of real single phase transformers
- The equivalent circuit of a transformer
- The short circuit and open circuit test of a transformer
- The transformer voltage regulation and efficiency
- The auto transformer
- Three phase transformer
- Transformer connections
3- Fundamentals of Electric Machines
- Induced voltage on a conductor moving in a magnetic field
(Generator action )
- Production of induced force on a wire ( motor action )
- Rotating loop between curved pole phases
- The induced torque in the rotating loop in a magnetic field
- The generated DC voltage of a rotating loop
- Winding types of electric machines
- Voltage regulation
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- 4- DC Generators
- Separately exited generators
- Armature reaction
- The shunt DC generator
- The efficiency of the DC generator
- The series DC generator
- The cumulatively compound DC generator
5- DC-Motors
- Separately exited motors
- The shunt DC motor
- Speed control of DC motor
- Series DC motor
6- AC Electric Machines
- Difference between DC and AC machines
- Rotating magnetic field
- Relationship between frequency, speed of magnetic field, speed
of rotor and poles
- The induced voltage in AC machines
7- Synchronous Generators
- Synchronous generator construction
- The speed of rotation of a synchronous generator
- The internal generated voltage of a synchronous generator
- The equivalent circuit of synchronous generator
- The phasor diagram of a synchronous generator
- Power and torque in a synchronous generator
8- Induction Motors
- Induction motor construction
- Basic induction motor concepts
- The equivalent circuit of an induction motor
- Power and torque in induction motors
- Induction motor torque-speed characteristics
9- Single Phase Motors
- The universal motor
- Single phase induction motors
- Speed control of single phase induction motors