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# Inductance by means of his definition

- To: femm@yahoogroups.com
- Subject: Inductance by means of his definition
- From: Alberto Perez <albertoperarnau@yahoo.es>
- Date: Thu, 15 Nov 2001 13:59:13 +0100 (CET)

Hello,

As you know I'm simulating an induction motor, now I'm calculating inductance. I read manual of femm where it says to calculate inductance by energy. I use this method, but I find another method where it uses integer of A, the equation is:

L = [N*h/Scopper*(integer A in section Scopper+ - integer A in section Scopper- )]/i

where

N : number of turns

h : depth

Scopper : section

i: current

Which method is more exact or are two equals? I think this method is more exact because the method of energy uses definition of W=1/2Li^2 and it equals to energy by integer of AJ. This method come of definition of inductance. The results are similars by two methods.

Thank you

Alberto

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