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Electrical Machines

  • Induction Motors Faults and Protection
    Electrical Machines

    Induction Motors Faults and Protection

    Faults that can occur in 3 phase induction motors and associated protections are discussed below: Stator faults: These faults include ...
    Bharadwaj
    April 25, 2016
  • Synchronous Generator loss Excitation
    Electrical Machines

    What happen When Synchronous Generator loss Excitation

    During normal operation of the Synchronous Generator or Alternator excitation to the rotor is provided by the small DC generator ...
    Bharadwaj
    April 25, 2016
  • Why rating of Synchronous Generators and Alternators in MVA or KVA
    Electrical Machines

    Why rating of Synchronous Generators and Alternators in MVA or KVA

    Normally the rating of synchronous generators or alternators will be in KVA or MVA instead of kW rating. Electrical apparatus ...
    Bharadwaj
    April 25, 2016
  • Motor Protection
    Electrical Machines

    6.6kV HV Induction motor Protection

    HV 6.6kV Induction motor Protection For HV motors rated 6.6kV and above motor over current, stalled rotor, and short circuit ...
    Bharadwaj
    April 24, 2016
  • DC Motor Applications in Industries
    Electrical Machines

    DC Motor Applications in Industries

    DC Motor Applications in Industries In spite of wide use of ac supply, dc machines have some advantages compared to ac motors ...
    Bharadwaj
    April 24, 2016
  • Why Damper windings used in synchronous motors
    Electrical Machines

    Why Damper windings used in synchronous motors

    Synchronous motors are not self starting machines. These machines are made self starting by providing a special winding in the ...
    Bharadwaj
    April 24, 2016
  • Applications of Synchronous Motors
    Electrical Machines

    Applications of Synchronous Motors

    For industrial squirrel cage induction motors are used mostly for the motor and drive systems applications. Synchronous motors are very ...
    Bharadwaj
    April 24, 2016
  • Hydrogen cooling in Synchronous Generators
    Electrical Machines

    Advantages of Hydrogen cooling in Synchronous Generators

    Cooling system should be provided in the generator or alternator to remove the heat generated in the windings (I2R loss) ...
    Bharadwaj
    April 24, 2016
  • Advantages & Disadvantages of Variable Speed Drives
    Electrical Machines

    Advantages & Disadvantages of Variable Speed Drives

    Variable Speed Drives (VSDs) are employed in the industrial applications where different speeds are require to operate certain process systems. ...
    Bharadwaj
    April 24, 2016
  • Advantages & Disadvantages of Synchronous Motors
    Electrical Machines

    Advantages & Disadvantages of Synchronous Motors

    In industries induction motors are employed mostly because of less cost, rugged construction, good starting torques and very less maintenance. ...
    Bharadwaj
    April 24, 2016
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