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### EE2035 COMPUTER AIDED DESIGN OF ELECTRICAL APPARATUS | ANNA UNIVERSITY BE EEE QUESTION BANK 8TH SEMESTER

EE2035 COMPUTER AIDED DESIGN OF ELECTRICAL APPARATUS L T P C
3 0 0 3
AIM
To introduce the basics of Computer Aided Design technology for the design of Electrical Machines.
OBJECTIVES:
At the end of this course the student will be able to
a. Learn the importance of computer aided design method.
b. Understand the basic electromagnetic field equations and the problem formulation for CAD
applications.
c. Become familiar with Finite Element Method as applicable for Electrical Engineering.
d. Know the organization of a typical CAD package.
e. Apply Finite Element Method for the design of different Electrical apparatus.
UNIT I INTRODUCTION 8
Conventional design procedures – Limitations – Need for field analysis based design – Review of
Basic principles of energy conversion – Development of Torque/Force.
UNIT II MATHEMATICAL FORMULATION OF FIELD PROBLEMS 9
Electromagnetic Field Equations – Magnetic Vector/Scalar potential – Electrical vector /Scalar
potential – Stored energy in Electric and Magnetic fields – Capacitance - Inductance- Laplace and
Poisson’s Equations – Energy functional.
UNIT III PHILOSOPHY OF FEM 10
Mathematical models – Differential/Integral equations – Finite Difference method – Finite element
method – Energy minimization – Variational method- 2D field problems – Discretisation – Shape
functions – Stiffness matrix – Solution techniques.
Elements of a CAD System –Pre-processing – Modelling – Meshing – Material properties- Boundary
Conditions – Setting up solution – Post processing.
UNIT V DESIGN APPLICATIONS 9
Voltage Stress in Insulators – Capacitance calculation - Design of Solenoid Actuator – Inductance
and force calculation – Torque calculation in Switched Reluctance Motor.
TOTAL : 45 PERIODS
TEXT BOOKS
1. S.J Salon, ‘Finite Element Analysis of Electrical Machines’, Kluwer Academic Publishers,
London, 1995.
2. Nicola Bianchi, ‘Electrical Machine Analysis using Finite Elements’, CRC Taylor& Francis,
2005.
REFERENCES
1. Joao Pedro, A. Bastos and Nelson Sadowski, ‘Electromagnetic Modeling by Finite Element
Methods’, Marcell Dekker Inc., 2003.
2. P.P.Silvester and Ferrari, ‘Finite Elements for Electrical Engineers’, Cambridge University Press,
1983.
3. D.A.Lowther and P.P Silvester, ‘Computer Aided Design in Magnetics’, Springer Verlag, New
York, 1986
4. S.R.H.Hoole, ‘Computer Aided Analysis and Design of Electromagnetic Devices’, Elsevier, New
York, 1989. User Manuals of MAGNET, MAXWELL & ANSYS Softwares.

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