DESIGN OF ELECTRICAL APPARATUS
General concepts in the design of rotating machines-output equation-Magnetic and electric loadings-Commin design features of all rotating machines-Conducting,insulating and magnetic materials used in electrical apparatus-mmf calculation for the magnetic circuit of rotating machines-Leakage reactance calculation.
Armature winding –output equation-Choice of specific loadings-Choice of poles-design of conductors,winding,slot,air gap,field poles and field coils,commutator and brush-Predetermination of efficiency,temperature rise and open circuit characteristics from design data(qualitative treatment only)
Output equation-Design of core and coils for single phase and three phase transformers-Design of tank and cooling tubes-Predetermination of circuit parameters, magnetising current, losses, efficiency, temperature rise and regulation from design data (qualitative treatment only)
Output equation-Choice of specific loadings-Design of stator-Design of squirrel cage and slip ring rotors-Stator and rotor winding designs-Predetermination of circuit parameters, magnetising current, efficiency and temperature rise from design data (qualitative treatment only).
Constructional features-SCR-Output equation-specific loadings-Main dimensions-Stator design-Design of salient pole field coil.
1.Sawhney,A.K.,’A course in Electrical Machines Design’,Dhanpat Rai and sons,New Delhi,1999.
2.Sen,S.K.,’Principles of Electrical Machine Design with computer Programmes’,Oxford and I.B.H Publishing Co.Pvt.Ltd,New Delhi,2001.
3.Rai,H.M.,’Principles of Electrical Machines Design’,Sathya Prakash,New Delhi,1994.
