How can I control the speed induction motor?

Discussion in 'Embedded Systems and Microcontrollers' started by Ahmed Elbhiry, Jan 31, 2013.

  1. Ahmed Elbhiry

    Thread Starter New Member

    Jan 19, 2013
    7
    0
    I have Motor 3/4 HP 2 capacitor.Capacitor permanently + capacitor start.
    How can I control the speed of the motor?
     
  2. mrmount

    Active Member

    Dec 5, 2007
    59
    7
    Variable Frequency Drives (VFDs) are typically used to control speed of an induction motor.
     
  3. Ahmed Elbhiry

    Thread Starter New Member

    Jan 19, 2013
    7
    0
    1 - Climate frequency will Taatgbr value (xl) file as well as the value of (xc) of the capacitor and thus will change the value of (z). Question is the angle between the files and start operating will be (90) degrees to obtain a higher torque or will change?
    *2 - Is the ability will change or not? 3 - capacitors in the department will bear the frequency change?
     
  4. Potato Pudding

    Well-Known Member

    Jun 11, 2010
    684
    92
    An Induction Motor is an AC motor, and AC motors almost always have a speed that is dependent on the AC frequency.

    You need to change the frequency of the power connection.

    You need a variable frequency drive.
     
  5. Ahmed Elbhiry

    Thread Starter New Member

    Jan 19, 2013
    7
    0
    Thank you very much
     
  6. GetDeviceInfo

    Senior Member

    Jun 7, 2009
    1,571
    230
    but yes, the capacitors confound frequency change, and as a result, variable frequency is not often implemented with cap phased motors.
     
    strantor likes this.
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