Syllabus
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Course Code: EI-PC-304 Course Name: Electrical Machines-II |
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| MODULE NO / UNIT | COURSE SYLLABUS CONTENTS OF MODULE | NOTES |
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| 1 | Three Phase Induction Machines:Constructional details, Types of rotors, Principle of operation, Slip, cogging and crawling, Equivalent circuit, Torque-Slip characteristics, Condition for maximum torque, Losses and efficiency, Load test, No load and blocked rotor tests, Separation of losses, Double cage induction motors, Induction generators, Need for starting - Types of starters - DOL, Rotor resistance, Autotransformer and Star delta starters, Speed control, Voltage control, Frequency control and pole changing Cascaded connection-V/f control. | |
| 2 | Single Phase Induction Motors:Constructional details of single phase induction motor, Double field revolving theory and operation - Equivalent circuit, Starting methods of single-phase induction motors, Capacitor-start capacitor run Induction motor, Shaded pole induction motor, Repulsion motor, Hysteresis motor, AC series motor. | |
| 3 | Synchronous Generators:Constructional details - Types of rotors -winding factors- emf equation - Synchronous reactance - Armature reaction, Synchronizing and parallel operation - Synchronizing torque -Change of excitation and mechanical input- Voltage regulation - EMF, MMF, ZPF, steady state power- angle characteristics- Two reaction theory -slip test -short circuit transients. | |
| 4 | Synchronous Motors: Principle of operation, Torque equation, Operation on infinite bus bars, V and Inverted V curves, Power input and power developed equations, Starting methods, Current loci for constant power input, constant excitation and constant power developed-Hunting, natural frequency of oscillations, damper windings- synchronous condenser. | |
