EE2403 Special Electrical Machines Scanned Lecture Notes - Thangasamy Edition

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    05-02-2015, 10:40 AM Düzenlendi #1
       
    Anna University , Chennai


    Department of B.E-Electrical and Electronics Engg
    Seventh Semester
    EE2403 Special Electrical Machines 
    (Regulation 2008) 

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    Syllabus :

    UNIT-1 : Synchronous reluctance motor

    UNIT-2 : STEPPING MOTOR

    UNIT-3 : SWITCHED RELUCTANCE MOTORS

    UNIT-4 : PERMANENT MAGNET BRUSHLESS DC motor

    UNIt-5 : Permanent magnet synchronous motor

    Content :
    SPECIAL ELECTRICAL MACHINE
    UNIT-1
    Synchronous reluctance motor
    Need for syn reluctance motor
    Operating principle
    Reluctance torque
    Reason for rotation of rotor
    Design of motor
    1. Stator
    2. Rotor
    Classification of synchronous reluctance motor
    1. Rotor configuration
    a. Cage rotor for line start
    b. Cageless rotor for variable speed
    2. Stator windings
    3. Stator current controlled mode
    Stator current mode
    1. Unipolar current mode
    2. Bipolar current mode
    Axial airgap motor
    Radial airgap motor
    Radically laminated rotor
    Characteristics of syn reluctance motor
    Advantages
    Disadvantages
    Application
    Vernier motor
    Main features
    Construction
    Typical configuration for stator
    1. Split – pole type
    2. Open – slot type
    Design of vernier motor

    UNIT-2

    STEPPING MOTOR
    Introduction
    Relation
    Stepper motor
    Application
    Types of stepper motor
    1. Variable reluctance
    2. Permanenet magnet
    3. Hybrid stepper motor
    Classification
    1. Single stock type
    2. Multi stock type
    Multi stack VRSM
    Permanent magnet stepper motor
    Hybrid stepper motor
    Theory of torque prediction in stepping motor
    Effects of mutual inductance
    Characteristics of stepper motor
    1. Static characteristics
    a. Torque angle curve
    b. Torque current curve
    2. Dynamic characteristics
    a. Torque verse stepping rate
    b. Pull in curve
    c. Pull out torque
    d. Pull in rate
    e. Response range
    f. Slewing range
    g. Mid frequency response
    Stepper motor controller
    Power drives
    Power drives circuits
    Drawbacks
    Dual voltage drive
    Chopper drive
    Current suppression circuit
    1. Diode suppression
    2. Diode- resistor suppression
    3. Diode – zener diode suppression
    Linear analysis
    Non-linear analysis

    UNIT-3
    SWITCHED RELUCTANCE MOTORS
    Faraday’s law of electromagnetic induction
    Faradays law of electromagtic intraction
    Torque developed by reluctance
    Variable reluctance principle
    SRM
    SRM principle
    Construction
    Power controller switching circuits
    Advantages
    Disadvantages
    Split power supply converters
    Dump c converters
    Micro processor based control
    Speed torque characteritics
    Operating modes of SRM
    1. Single pulse mode
    2. PWM mode


    UNIT-4

    PERMANENT MAGNET BRUSHLESS DC motor
    Conventional DC motor
    Permanent magnet Dc motor
    Advantages
    Magnetic circuit analysis
    Magnetic equivalent circuit
    Torque equation
    Power controller for BLPM square wave Dc motor
    Drive circuit
    Classification
    Torque speed characteristics

    Unit-5

    Permanent magnet synchronous motor
    Evolution of syn motor
    3 phase BLPM syn motor
    Principle of operation
    Types of rotor
    1. Peripheral
    2. Interior
    3. Claw pole
    4. Transverse
    EMF equation
    Torque equation of BLPM sine wave motor

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