# Electrical Machines - II (Synchronous Generator And Motor)

 Course Code : ULZ0065 Author : uLektz University : General for All University Regulation : 2017 Categories : Electrical & Electronics Format : ePUB3 (DRM Protected) Type : eBook

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Description :Electrical Machines - II (Synchronous Generator And Motor) of ULZ0065 covers the latest syllabus prescribed by General for All University for regulation 2017. Author: uLektz, Published by uLektz Learning Solutions Private Limited.

Note : No printed book. Only ebook. Access eBook using uLektz apps for Android, iOS and Windows Desktop PC.

##### Topics
###### UNIT I SYNCHRONOUS GENERATOR

1.1 Constructional details-Types of rotors-Winding factors

1.2 emf equation

1.3 Synchronous reactance

1.4 Armature reaction

1.5 Phasor diagrams of non salient pole synchronous generator connected to infinite Bus

1.6 Synchronizing and parallel operation - Synchronizing torque

1.7 Change of excitation and mechanical input-Voltage regulation-EMF,MMF, ZPF and A.S.A methods

1.9 Two reaction theory

1.10 Slip test

1.11 Short circuit transients

1.12 Capability Curves

###### UNIT II SYNCHRONOUS MOTOR

2.1 Principle of operation

2.2 Torque equation

2.3 Operation on infinite bus bars

2.4 V and Inverted V curves

2.5 Power input and power developed equations

2.6 Starting methods

2.7 Current loci for constant power input - Constant excitation and constant power developed

2.8 Hunting

2.9 Natural frequency of oscillations

2.10 Damper windings

2.11 Synchronous condenser

###### UNIT III THREE PHASE INDUCTION MOTOR

3.1 Constructional details

3.2 Types of rotors-Principle of operation-Slip-Cogging and crawling-Equivalent circuit

3.3 Torque-Slip characteristics - Condition for maximum torque

3.4 Losses and efficiency

3.6 No load and blocked rotor tests

3.7 Circle diagram

3.8 Separation of losses

3.9 Double cage induction motors

3.10 Induction generators

3.11 Synchronous induction motor

###### UNIT IV STARTING AND SPEED CONTROL OF THREE PHASE INDUCTION MOTOR

4.1 Need for starting

4.2 Types of starters-DOL,Rotor resistance, Autotransformer and Star-delta starters

4.3 Speed control

4.4 Voltage control - Frequency control and pole changing

4.6 V/f control

4.7 Slip power recovery scheme

4.8 Braking of three phase induction Motor:Plugging,Dynamic braking and Regenerative braking

###### UNIT V SINGLE PHASE INDUCTION MOTORS AND SPECIAL MACHINES

5.1 Constructional details of single phase induction motor-Double field revolving theory and operation-

5.2 Equivalent circuit-No load and blocked rotor test-Performance analysis

5.3 Starting methods of single-phase induction motors-Capacitor start - capacitor run Induction motor-Shaded pole induction motor

5.4 Linear induction motor

5.5 Repulsion motor

5.6 Hysteresis motor

5.7 AC series motor

5.8 Servo motors

5.9 Stepper motors

5.10 Introduction to magnetic levitation systems