SYNCHRONOUS AC MOTORS AND GENERATORS

Discussion in 'Physics' started by mindgame2, Jan 26, 2009.

  1. mindgame2

    Thread Starter Member

    Jan 24, 2009
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    HI GUYS:)!
    I AM JUST MESSED UP WITH THE CONCEPTS OF SYNCHRONUS AC MOTOR AND GENERATORS
    PLZ IF ANY ONE CUOLD HELP ME
     
  2. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
  3. mindgame2

    Thread Starter Member

    Jan 24, 2009
    12
    0
    i have gone through the link before but they havent solved my issues
    correct me if i am wrong
    in case of synchronus motors we first have to supply ac to stator to produce magnetic flux revolving with synchronus speed then we supply dc to rotor to produce magnetic interlocking of stator and rotor.then what happens?????
    if we have to turn off the machine how do we do that???????
    what about the residual flux???
    and in case of ac generators do we rotate the rotor and the stator provide us three phase currents????
     
  4. mindgame2

    Thread Starter Member

    Jan 24, 2009
    12
    0
    plz any one how could help me in grasping these concepts
     
  5. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    If the residual flux is enough to create the torque the machine need to rotate then the motor will rotate otherwise the motor will stop. This is true if you remove the DC voltage from the rotor. If you remove the AC voltage from the stator then the motor will stop regardless of the DC current in the rotor.
     
  6. mindgame2

    Thread Starter Member

    Jan 24, 2009
    12
    0
    thanks for replying
     
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