three phase induction motor speed control using spwm

Discussion in 'The Projects Forum' started by palmontu6342, Sep 15, 2013.

  1. palmontu6342

    Thread Starter New Member

    Sep 15, 2013
    3
    0
    i want to implement hardware for 3 phase sine wave inverter from single phase supply and also want to speed control of I.M.
    all this implemnetation analog design(using opamp) and not using microcontroller
    please help me.......
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,521
    2,369
    The typical Variable Frequency Drive (VFD) is operated by a Dsp.
    I am not sure what technology you intend using?
    By analog control, do you mean the nature of the command signal or the technique used in the drive itself?
    There is information on this found in the Picmicro site app notes
    Max.
     
  3. BillB3857

    Senior Member

    Feb 28, 2009
    2,400
    348
    It would probably be more cost effective to buy an off-the-shelf unit. Also probably more reliable if properly sized to your application. Many option choices from many manufacturers.
     
  4. palmontu6342

    Thread Starter New Member

    Sep 15, 2013
    3
    0
    is it possible or not with analog design???
    please help me its my final year project.....
     
  5. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,521
    2,369
    The total project is no mean feat, I suggest you start at the semi conductors web site app notes such as Freescale, International rectifier, Pic micro and others.
    Max.
     
  6. palmontu6342

    Thread Starter New Member

    Sep 15, 2013
    3
    0
    but i have a block diagram of it and it is a carrier based voltage source inveter which drives the induction motor using spwm gate pulses. and by unipolar or by polar switching modulation index can be varied an thus we can control the speed of three phase induction motor. but i havent any circuit diagram of it.
     
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