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  • Alternators
    • Basic Principle of Alternators
    • Advantages of stationary armature
    • Basic Construction of Alternator
    • Detailed Construction of Alternator
    • Damper Windings & Speed and Frequency of Alternator
    • Armature Windings
    • Concentric or Chain Windings
    • A.C. Armature Windings of Alternator
    • Pitch factor of alternator
    • Distribution Factor
    • E.M.F. Equation of an Alternator
    • Armature Reaction in Alternator
    • Summary of Armature reaction in alternator:
    • Alternator on Load
    • Synchronous Reactance
    • Phasor Diagram of a Loaded Alternator
    • Voltage Regulation of alternators
    • Determination of Voltage Regulation
    • EMF method
    • MMF method for voltage regulation determination
    • Procedure for mmf Method
    • Potier method
    • Procedure for potier method
    • Two reaction theory
    • Effect of Salient Poles
    • Analysis by two reaction theory
    • Modified phasor diagram by two reaction theory
    • Reluctance Power
    • Power angle characteristic of salient pole machines
    • Losses and efficiency of an alternator

  • Synchronous generator
    • Parallel Operation of synchronous generator
    • Advantages and condition of Parallel Operation of synchronous generator
    • Methods of Synchronization
    • Synchronising Action
    • Effects on synchronising action
    • Synchronizing Current
    • Synchronizing Power
    • Synchronous generator Connected to Infinite Busbars
    • Alternators Connected to Infinite Busbars
    • Two identical synchronous generators in parallel
    • Alternators on Infinite Busbars
    • Load Sharing
    • Effect of Change in Excitation on an alternator connected to an infinite busbars
    • Effect of change of fuel supply to alternators connected to infinite busbar
    • Governor characteristics
    • Electrical load diagram

  • Synchronous motor
    • Introduction to Synchronous Motor
    • Principle of Operation of synchronous motor
    • Method of Starting of synchronous motor
    • Construction of synchronous motor
    • Motor Starting by Reducing the supply Frequency
    • Motor Starting with an External Motor
    • Motor Starting by Using damper (Amortisseur) Winding
    • Motor on Load with Constant Excitation
    • Power Flow within a Synchronous Motor
    • Equivalent circuit model and phasor diagram of a synchronous motor
    • Synchronous-motor power equation
    • Synchronous Motor with Different Excitations
    • Effect of Increased Load with Constant Excitation
    • Effect of Changing Excitation on Constant Load
    • Different Torques of a Synchronous Motor
    • Salient Pole Synchronous Motor
    • Effect of changes in load on armature current, power angle, and power factor of synchronous motor
    • Effect of changes in field excitation on synchronous motor performance
    • Constant-power Lines
    • Construction of V-curves
    • V curves
    • O-Curves and V -Curves
    • Hunting
    • Methods and procedure of Starting a Synchronous Motor
    • Comparison Between Synchronous and Induction Motors
    • Synchronous Motor Applications
    • Synchronous Condenser
    • Synchronous-motor losses and efficiency

  • Induction machines
    • Theory of induction machines
    • Universal motor
    • Three phase induction motors
    • Construction of Induction motors
    • Principle of operation of induction motor
    • Rotating Magnetic Field Due to 3-Phase Currents
    • Properties of rotating magnetic field
    • Alternate Mathematical Analysis for Rotating Magnetic Field
    • slip and rotor frequency of induction motor
    • Effect of Slip on The Rotor Circuit
    • Rotor Current
    • Rotor torque and Starting Torque of induction machines
    • Condition for Maximum Starting Torque
    • Starting Torque of 3-Phase Induction Motors
    • Behaviour of 3-phase induction motor on load
    • Torque Under Running Conditions
    • Maximum Torque under Running Conditions
    • Torque-Slip Characteristics
    • Full-Load, Starting and Maximum Torques
    • comparison of induction motor and transformer
    • Speed Regulation of Induction Motors
    • Speed Control of 3-Phase Induction Motors
    • Power Factor of Induction Motor
    • Power Stages in an Induction Motor
    • Induction Generator
    • No-load Test
    • Blocked Rotor Test
    • Construction of the Circle Diagram
    • Double Squirrel Cage Motor
    • single phasing
    • Time Harmonics of Induction motors
    • Effects of air gap flux harmonics
    • Construction & Working of Double Squirrel-Cage Motors
    • Equivalent Circuit of Double Squirrel-Cage Motor
    • cogging
    • crawling
    • Line excited and self excited induction generator
    • principle of operation of induction generator
    • Applications of Induction generator
    • Induction generator controller technology

  • Speed control of Induction Motors
    • Direct-switching or Line starting of Induction Motors
    • Stator resistance starting of induction motors
    • Primary resistors starting of Induction motor
    • Autotransformer starting of Induction motor
    • Star-delta Starter of induction motor
    • Rotor resistance starting of induction motor
    • Speed Control of Induction Motors
    • Speed control by changing applied voltage
    • Rotor resistance speed control of Induction motors
    • Cascade speed control of induction motor
    • Pole changing speed control scheme of induction motor
    • Stator frequency control of induction motor

Branch : Electrical and Electronics Engineering | Subject : Electrical Machines II (AC Machines)
Speed control of Induction Motors
  • Direct-switching or Line starting of Induction Motors

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  • Stator resistance starting of induction motors

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  • Primary resistors starting of Induction motor

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  • Autotransformer starting of Induction motor

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  • Star-delta Starter of induction motor

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  • Rotor resistance starting of induction motor

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  • Speed Control of Induction Motors

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  • Speed control by changing applied voltage

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  • Rotor resistance speed control of Induction motors

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  • Cascade speed control of induction motor

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  • Pole changing speed control scheme of induction motor

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  • Stator frequency control of induction motor

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