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soft starter by using thyrister with arduino

Discussion in 'Arduino' started by hamza taj, Jan 3, 2018.

  1. hamza taj

    hamza taj New Member

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    Jan 3, 2018
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    asalam o allikum

    I am planning to start building a soft starter by using arduino which can control inrush current of three phase induction motor.

    by using Arduino I don't know how to trigger the thyristor.i don't have any code or relevant data of this project.

    can anyone know about it?????????
     
  2. MikeMl

    MikeMl Well-Known Member Most Helpful Member

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    Use optical-isolation between the Arduino ports and the gates of the thyristors. Only safe way to do it...
     
  3. MaxHeadRoom78

    MaxHeadRoom78 Well-Known Member

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    I built one for a Universal motor, but a 3ph one is called a soft start contactor. They can be purchased ready made.
    See the Fairchild app note AN-3006 for suitable opto's . you will need a Random phase type for each phase, rather than zero crossing version.
    Max.
     

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