Self-inductance of a toroid with a rectangular cross section

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SUMMARY

The self-inductance of a toroid with a rectangular cross-section can be approximated by treating the windings as a thin homogeneous current layer around the core. In this model, the number of turns, N, is simplified to N = 1, while the current is adjusted to Iapp = Iorg * Norg. This approximation is necessary due to the complex geometry of the coil, which resembles the thread on a screw, complicating direct calculations.

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Ravasash
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I have found answers on how to calculate the self-inductance of toroid of rectangular cross section, however my question says that "The winding are seen as a thin homogeneous currentlayer around the core" (excuse the translation). What does that mean for N? Does it mean N=1?
 
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Ravasash said:
Does it mean N=1?
Yes.
Say that the original values are: N = Norg , I = Iorg.
In the approximated model the values become:
Napp = 1 , Iapp = Iorg * Norg.
The reason for this approximation is that the coil is formed like the thread on a screw, which make calculations difficult.
 

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