Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Help understanding Partial Mutual Inductance

  1. Feb 26, 2016 #1
    I'm sure you are all familiar with calculating the inductance of a long transmission line.

    We first calculate the partial self inductance and we add to the partial mutual inductance due to the current in the other conductors.

    Looking at the image of a single-phase system, where I1 + I2 = 0.


    The partial inductance per unit of length of wire 1 is given by this equation:


    Here is my question:

    Why do we estimate the MUTUAL flux linkage as the flux going through the GREEN area in the image and not the RED area?

    I don't see how the flux outside both wires accounts for the mutual inductance of these two wires.
  2. jcsd
  3. Feb 29, 2016 #2
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Help understanding Partial Date
Help understanding auto transformer shorting Thursday at 9:13 PM
I need help understanding a PLL Sep 25, 2017
Need help understanding the proof of Thevenin's theorem May 15, 2017
Help understanding NMOS waveforms Mar 15, 2017