JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Prerequisite

Machine Modeling and Analysis

Course Objectives

to prepare the students to

• Understand generalized modeling of electrical machines
• analyze different electrical machines with dynamic modeling

Course Outcomes

After taking this course, the student will be able to:

• Understand the basic mathematical analysis of electrical machines and its characteristics.
• Understand behavior of electrical machines under steady state and transient state.
• Understand dynamic modeling of electrical machines.

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.

TEXT 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.

REFERENCES:

• 1. Thyristor control of Electric Drives - Vedam Subranmanyam.
• 2. Performance optimization of induction motors during Voltage-controlled soft starting, Article in IEEE Transactions On Energy Conversion, July 2004. R19 M.TECH M. TECH. PE/PEED
• 3. NPTEL Course on “Modelling and Analysis of Electrical Machines”, https://www.youtube.com/playlist?list=PLbMVogVj5nJQBG9363J1uq5Fnq4m1yGXL R19 M.TECH M. TECH. PE/PEED M. TECH – I YEAR – I SEM. (PE/PEED)