JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objective

This course deals with generalized modeling and analysis of different electrical

machines used for industrial drive applications.

Course Outcomes

Upon the completion of this course, the student will be able to

• Understand electrical machines and its characteristics
• Analyse the behavior of electrical machines under steady state and transient state
• Model electrical machines under dynamic conditions

UNIT - I

Basic Machine Theory: Electromechanical Analogy – Magnetic Saturation – Rotating field theory – Operation of Inductor motor – equivalent circuit – Steady state equations of DC machines – operations of synchronous motor – Power angle characteristics

UNIT - II

Electrodynamical Equation & Their Solutions: Spring and Plunger system - Rotational motion – mutually coupled coils – Lagrange’s equation – Application of Lagrange’s equation solution of Electro dynamical equations.

UNIT - III

Dynamics of DC Machines: Separately excited d. c. generations – stead state analysis – transient analysis – Separately excited d. c. motors – stead state analysis – transient analysis – interconnection of machines – Ward Leonard system of speed control.

UNIT - IV

Induction Machine Dynamics: Induction machine dynamics during starting and braking – accelerating time – induction machine dynamic during normal operation – Equation for dynamical response of the induction motor.

UNIT - V

Synchronous Machine Dynamics: Electromechanical equation – motor operation – generator operation – small oscillations – general equations for small oscillations – representation of the oscillation equations in state variable form.

REFERENCE BOOKS:

• 1. Sen Gupta D.P. and J. W “Electrical Machine Dynamics “Macmillan Press Ltd 1980.
• 2. Bimbhra P.S. “Generalized Theory of Electrical Machines “Khanna Publishers 2002. M. Tech – I Year – II Sem. (PE/PEED/PID)