When I design a switching power supply, usually I make an air gap at the transformer's core. This will alter the BH curve, preventing the core saturation. However, as I increase the gap's length, the fluxe fringes. So, the reluctance of the air gap is not high enough to alter the BH curve as I expected.
To solve the problem, I read a paper by Roshen (file Roshen2007.pdf) and derive formulae inside that paper (file Formulae Derivation... .pdf).
However, I got a mismatch between scalar potential functions in both papers (equation II.6 in both files).
On the last page of my derivation, I got a term Hg*y/2.
On the second page of Roshen's paper, this term is Hg/lg
I would like to know why Roshen did not put the variable y on that term?
Thank you in advance
To solve the problem, I read a paper by Roshen (file Roshen2007.pdf) and derive formulae inside that paper (file Formulae Derivation... .pdf).
However, I got a mismatch between scalar potential functions in both papers (equation II.6 in both files).
On the last page of my derivation, I got a term Hg*y/2.
On the second page of Roshen's paper, this term is Hg/lg
I would like to know why Roshen did not put the variable y on that term?
Thank you in advance
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