To introduce the principles of operations of DC machines as motor and generator
To introduce the principles of operations of Transformers
To introduce the principles of operations of Induction machines
To introduce the principles of operations of Synchronous machines
To introduce other special machines
UNIT I D.C. MACHINES 9
D.C. Machines: – Principle of operation and construction of motor and generator – torque equation – Various excitation schemes – Characteristics of Motor and Generator – Starting, Speed control of D.C. Motor.
UNIT II TRANSFORMERS 9
Principle, Construction and Types of Transformer – EMF equation – Phasor diagrams – Regulation and efficiency of a transformer-Introduction to three phase transformer Connection. Applications of Current and Potential Transformer.
UNIT III SYNCHRONOUS MACHINES 9
Principle of Operation, type – EMF Equation and Phasor diagrams – Synchronous motor- Rotating Magnetic field Starting Methods , Torque V- Curves, inverted – V curves.
UNIT IV THREE PHASE INDUCTION MOTORS 9
Induction motor-principle of operation, Types – Torque-slip characteristics – Starting methods and Speed control of induction motors.
UNIT V SINGLE PHASE INDUCTION MOTORS AND SPECIAL MACHINES
Types of single phase induction motors –Double field revolving theory- Capacitor start capacitor run motors – Shaded pole motor – Repulsion type motor – Universal motor – Hysteresis motor – Switched reluctance motor – Brushless D.C motor.-Stepper motor.
TOTAL: 45 PERIODS
At the end of the course, the student should have the:
- Ability to acquire knowledge to solve problems associated with DC and AC Machines.
- Ability to test and control different machines based on the familiarity of basic concepts and working principle.
- Ability to choose appropriate machines for a given application while carrying out projects.
- Ability to apply the knowledge gained to choose appropriate machines for specific application useful for the society.
- Ability to know about the latest developments related to machines and to learn their concepts even after the completion of the course.
- Ability to acquire knowledge of stepper motor.
- Fitzgerald A.E, Kingsley C., Umans, S. and Umans S.D., “Electric Machinery”, McGraw- Hill, 2002.
- Theraja, B.L., “A Text book of Electrical Technology”, Vol.II, S.C Chand and Co., New Delhi, 2007.
- Abhijit Chakrabarti and Sudipta Debnath, “Electrical Machines”, McGraw- Hill Education, 2015.
- Deshpande M. V., “Electrical Machines” PHI Learning Pvt. Ltd., New Delhi, 2011
- B.S.Guru and H.R.Hiziroglu, “Electric Machinery and Transformer’, Oxford university Press 2007
- Del Toro, V., “Electrical Engineering Fundamentals”, Prentice Hall of India, New Delhi, 1995.
- Nagrath I. J and Kothari D. P. ‘Electric Machines’, Fourth Edition, McGraw Hill Education, 2010.
- C.A.Gross, “Electric Machines”, CRC Press 2010.
- NPTEL Video Lecture series on “Electrical Machines I” and “Electrical Machines II” by Dr. Krishna Vasudevan, IIT Madras.