Is it bad to operate a PM motor core in saturation?

Discussion in 'General Electronics Chat' started by nickw1881, Feb 2, 2011.

  1. nickw1881

    Thread Starter Member

    Dec 25, 2009
    If I use ND magnets with a Br of over 1T, it is almost impossible to keep the thin parts of the field and armature core out of saturation, without making the field core and armature core very nearly as thick as the magnets are wide. This would make the motor extremely heavy. Is it "bad" to operate the core of a permanent magnet motor in saturation?
  2. marshallf3

    Well-Known Member

    Jul 26, 2010
    I wouldn't do it, 80% is probably fine.

    Can you provide some pix and a description of what you're trying to do?