Electrical Machines 2
EEC-210
Synchronous Alternators Constructional features armature windings E.M.F. equation winding coefficients harmonics in the induced E.M.F. armature reaction O.C. and S.C. tests voltage regulation-Synchronous impedance method MMF Method Potier’s triangle method parallel operation operation on infinite bus, cooling Two reaction theory power expressions for cylindrical and salient pole machines performance characteristics
Poly phase Induction Machines Constructional features production of rotating magnetic field working of 3-phase Induction motor phasor diagram equivalent circuit power and torque relations torque and slip relations no load and blocked rotor tests and efficiency speed control by rotor resistance injected e.m.f frequency variation and pole changing DOL Y-∆ and autotransformer starters deep bar and double cage rotor motors cogging and crawling operation of Induction machine as generator and phasor diagram
Synchronous Motors – Principle of operation starting methods V-curves hunting and damping synchronous condenser introduction to single phase synchronous motors: Reluctance and Hysteresis motors
Fractional Horse Power Motors Single Phase Induction Motor: Double revolving field theory equivalent circuit no load and blocked rotor tests starting methods split phase Induction motor- capacitor start two value capacitor motor Introduction and applications of single phase AC series motor universal motor AC servo motor stepper motor permanent magnet AC motors