Syllabus - Electrical Machine Design (EE-601)

Electrical Engineering

Electrical Machine Design (EE-601)

VI

Unit-I

Fundamental Aspects of Electrical Machine Design

Fundamental Aspects of Electrical Machine Design: Design of Machines, Design Factors, Limitations in design, Modern Trends in design, manufacturing Techniques. Electrical Engineering Materials: Desirabilities of Conducting Materials, Comparison of Aluminium and Copper wires. Ferromagnetic Materials: Soft Magnetic materials – Solid Core Materials, Electrical Sheet and Strip, Cold Rolled Grain Oriented Steel. Insulating Materials: Desirable Properties, Temperature Rise and Insulating Materials, Classification of Insulating materials based on Thermal Consideration.

Unit-II

Design of DC Machines

Design of DC Machines: Output Equation, Choice of Specific Loadings and Choice of Number of Poles, Main Dimensions of armature, Design of Armature Slot Dimensions, Commutator and Brushes. Estimation of Ampere Turns for the Magnetic Circuit. Dimensions of Yoke, Main Pole and Air Gap. Design of Shunt and Series Field Windings.

Unit-III

Design of Transformers

Design of Transformers: Output Equations of Single Phase and Three Phase Transformers, Choice of Specific Loadings, Expression for Volts/Turn, Determination of Main Dimensions of the Core, Estimation of Number of Turns and Conductor Cross Sectional area of Primary and Secondary Windings, No Load Current. Expression for the Leakage Reactance of core type transformer with concentric coils, and calculation of Voltage Regulation. Design of Tank and Cooling (Round and Rectangular) Tubes.

Unit-IV

Design of Three Phase Induction Motors

Design of Three Phase Induction Motors: Output Equation, Choice of Specific Loadings, Main Dimensions of Stator. Design of stator slots and Winding, Choice of Length Air Gap, Estimation of Number of Slots for Squirrel Cage Rotor. Design of Rotor Bars and End Ring. Design of Slip Ring rotor. Estimation of No Load Current and Leakage Reactance.

Unit-V

Design of Three Phase Synchronous Machines and Computer aided Design (CAD)

Design of Three Phase Synchronous Machines: Output Equation, Choice of Specific Loadings, Short Circuit Ratio, Main Dimensions of Stator. Design of stator slots and Winding. Design of Salient and non-salient Pole Rotors. Magnetic Circuit and Field Winding.

Course Objective

To study mmf calculation and thermal rating of various types of electrical machines. To design armature and field systems for D.C. machines. To design core, yoke, windings and cooling systems of transformers. To design stator and rotor of induction machines. To design stator and rotor of synchronous machines and study their thermal behaviour.

Course Outcome

Ability to model and analyze electrical apparatus and their application to power system

Practicals

To study the laboratory measuring instruments and their application.
To Understand the Name plate Data / specification of Electrical Machines.
To demonstrate construction and working of DC Machines with their Functional Details.
To demonstrate the constructional part and working principal of AC Motors.
To demonstrate the constructional part and working principal of Transformers.
To perform tests for performance calculation of 1-phase and 3-phase Transformer.
To demonstrate construction and working of Magnetic Contractor.
To study the Earth leakage circuit breaker (ELCB).
To demonstrate the working principle of miniature circuit breaker (MCB).
To demonstrate constructional parts and working principle of induction type energy meter (KWh meter).
To demonstrate the construction and working principle of thermal over load relay.
To study Transformer oil insulation test.
To demonstrate the working of principle of Earth tester.
Study, Industrial applications of machines and drives for desired performance.

Reference Books

Sawhney, A.K., ‘A Course in Electrical Machine Design’, Dhanpat Rai & Sons, New Delhi, 1984.
M.V.Deshpande “Design and Testing of Electrical Machine Design” Wheeler Publications, 2010.
A.Shanmuga Sundaram, G.Gangadharan, R.Palani ‘Electrical Machine Design Data Book’, New Age International Pvt. Ltd., Reprint, 2007.
R.K.Agarwal “ Principles of Electrical Machine Design” Esskay Publications, Delhi, 2002.
Sen, S.K., ‘Principles of Electrical Machine Designs with Computer Programmes’, Oxford and IBH Publishing Co. Pvt. Ltd., New Delhi, 1987.