7EX6.2-COMPUTER AIDED DESIGN OF ELECTRICAL MACHINES |
Units: I |
Basic Principles of Electrical Machine Design: Specifications, Factors affecting
the design, Limitations, main dimension, loadings, output equation, factor affecting the
size and rating, Electrical Engineering Materials: conducting, magnetic and insulating
materials. Magnetic Circuit Calculation: Ohm’s law for magnetic circuit, mmf required
for air gap and iron parts, tapered teeth, real and apparent flux density, magnetizing
current.
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Units: II |
Heating and Cooling of Electrical Machines: heat dissipation and heat flow
equations, Newton’s law of cooling, equations for temperature rise, Rating of Machines:
Continuous, short and intermittent ratings, mean temperature rise, hydrogen cooling of turbo
alternators, quantity of cooling medium. |
Units: III |
Computer Aided Design of Transformers: Power and Distribution
Transformers, core and yoke cross sections, square and stepped core, output equations,
main dimensions, types &, design of windings, optimization concepts.
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Units: IV |
Computer Aided Design of Synchronous Machines: Turbo and Hydro
alternators, choice of specific magnetic & electric loading, short circuit ratio and its effects,
air gap length, output equation, main dimensions, flow charts for design of synchronous
machine, design of stator core & winding.
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Units: V |
Computer Aided Design of Induction Machines: Output equation, main
dimensions, design criteria, flow charts for design of induction motor, air gap length,
design of stator core and winding, rotor design.
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