Variable frequency drive

Discussion in 'The Projects Forum' started by SKMR168, Sep 23, 2016.

  1. SKMR168

    Thread Starter New Member

    Aug 8, 2015
    9
    1
    VFD uses less frequency to control the speed.But when the frequency decreases, the current will increase.There is a chance that the current may go beyond the rated current .Then how VFD is an option for speed control??
     
  2. #12

    Expert

    Nov 30, 2010
    16,278
    6,789
    You're right. Nobody should ever use a VFD because nobody knows about the speed/current response curves of electric motors. That includes the manufacturers of the VFD drives. They were just guessing.
     
  3. tcmtech

    Well-Known Member

    Nov 4, 2013
    2,034
    1,653
    Pulse Width Modulation.

    Read about it.
     
    #12 likes this.
Loading...