Rogowski coil with low-pass filter

Discussion in 'Homework Help' started by gsairus, Jun 22, 2011.

  1. gsairus

    Thread Starter New Member

    Jun 22, 2011
    Hello to everyone. I have been encountered with filtering problem during measuring by rogowski coil. The rogowski coil ought to measure the lightning current :). It supposed to use for only continuous current that characterised by low frequency bandwidth up to 3 kHz. Of course, the low (or continuous) current accompanied by strokes with significant higher frequency. It is led to the great induced voltages (M~di/dt). Unfortunately, the weakening by low-pass filter is not enough for such strokes (25 kHz and higher). Such strokes even could damage the circuit. Does someone have another Idea how to take away the signals with both higher amplitude values and great frequency? Thank you.
  2. bertus


    Apr 5, 2008