Current through the galvanic isolated H-Bridge

Discussion in 'The Projects Forum' started by Padderick, Jan 28, 2013.

  1. Padderick

    Thread Starter New Member

    Jan 7, 2012
    Hallo all together,

    I am working on a project which includes a galvanic isolated full bridge.

    I am always thinking about why the current does not behave like a sawtooth as
    it normally should from the equation I = 1/L *∫ U dt ?
    In the appendix I have saved a waveform which shows the current in blue and the control signals of the IGBT gates are displayed as C1, C2.
    The ringing comes from charging the freewheeling diode!?

    If you know more about the reason for exactly this behavior or you know some reports where it is explained, please let me know.

    Thank you.
  2. kubeek


    Sep 20, 2005
    Without the circuit diagram and showing what you´re measuring it is really hard to tell.