11EE307 GENERALISED THEORY OF ELECTRICAL MACHINES
Credits: 3:1:0
Course Objectives
To impart knowledge on
• The key principles in Analysis of electrical machines
• The Generalized Representation and steady state analysis of Synchronous Machines
• The generator and motor operation in steady state and transient conditions
• The analysis of harmonics in Ac machines
• The generalized representation of special machines
Unit I
Generalised Theory: Conversions - Basic two pole machines - Transformer with movable
secondary -Transformer voltage and speed voltage - Kron's primitive machine - Analysis of
electrical machines.
Unit II
Linear Transformations: Invariance of Power - Transformations from displaced brush axis,
three phases to two phase, Rotating axes to stationary axes-Transformed impedance matrix –
Torque calculations.
Unit III
DC Machines: Generalized Representation - Generator and motor operation - Operation with
displaced brushes - Steady state and transient analysis - Sudden short circuit - Sudden application
of inertia load - Electric braking of DC motors.
Unit IV
AC Machines: Synchronous Machines: Generalized Representation - Steady state analysis –
Transient analysis - Electromechanical transients. Induction Machines: Generalized
representation performance equation - steady state analysis - Transient analysis - Double cage
machine - Harmonics - Electric braking.
Unit V
Special Machines: Generalized Representation and steady state analysis of Reluctance Motor –
Brushless DC Motor – Variable Reluctance Motor – Single phase series motor.
Course Outcomes
Students will be able to describe
• The Generalized Representation of machines and their analysis
• The steady state analysis and transient analysis of various machines
• The performance of special machines and their representation
Reference Books:
1. Gupta J B.” Theory & Performance Of Electrical Machines”, S. K. Kataria & Sons, New
Delhi, 2010
2. Bimbhra P.S., “Generalized Circuit Theory of Electrical Machines”, Khanna Publishers
Limited, 5th Edition, 4th Reprint, New Delhi, 2000.
3. John Salmon “ Applications of General Theories to Electrical Machines Contributions to
their Design and Performance”, Troubador Publishing Ltd, Leicester, 2008.
4. 4.Bandyopadhyay M. N., “Electrical Machines: Theory And Practice” PHI
Learning,NewDelhi,2009