Electrical Machines II [V Semester EEE]

Author: U.A.Bakshi "V Semester EEE"

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Publisher	Technical Publications
Product Format	Paper Back
Language Published	English
Volume Number	--
Number of Pages	--
Product ID	9789333201919

Electrical Machines II [V Semester EEE] :

UNIT - I Synchronous Generator (Chapters - 1, 2, 3)

Constructional details - Types of rotors - Winding factors - emf equation - Synchronous reactance - Armature reaction - Phasor diagrams of non salient pole synchronus generator connected to infinte bus - Synchronizing and parallel operation - Synchronizing torque - Change of excitation and mechanical input - Voltage regulation - EMF, MMF, ZPF and A.S.A methods - Steady state power - Angle characteristics - Two reaction theory - Slip test - Short circuit transients - Capability curves.

UNIT - II Synchronous Motor (Chapters - 3, 4)

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.

UNIT - III Three Phase Induction Motor (Chapters - 5, 6)

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 - Circle diagram - Separation of losses - Double cage induction motors - Induction generators - Synchronous induction motor.

UNIT - IV Starting and Speed Control of Three Phase Induction Motor (Chapter - 7)

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 - Slip power recovery scheme - Braking of three phase induction motor : Plugging, Dynamic braking and regenerative braking.

UNIT - V Single Phase Induction Motors and Special Machines (Chapters - 8, 9)

Constructional details of single phase induction motor - Double field revolving theory and operation - Equivalent circuit - No load and blocked rotor test - Performance analysis - Starting methods of single-phase induction motors - Capacitor-start capacitor run induction motor - Shaded pole induction motor - Linear induction motor - Repulsion motor - Hysteresis motor - AC series motor - Servo motors - Stepper motors - Introduction to magnetic levitation systems.