# Mathcad - 04-08 - tot MMF gap MMF c + = thus: MMF gap...

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Problem 4-8: Solution N U core U gap core gap a. b. From the B-H curve we find that a flux density of 1.0 T requires a field intensity of about 450 A/m H c 450 amp m = 0 0.2 0.4 0.6 0.8 1 1.2 1.4 600 800 1000 Cast Iron Cast Steel Sheet Steel H in At/m 0 200 400 the length of the core is: l c 0.5 m = so MMF c H c l c = MMF c 225A =

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I 0.415A = I MMF tot N = N 1500 = number of turns is: MMF tot 622.887A = MMF
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Unformatted text preview: tot MMF gap MMF c + = thus: MMF gap 397.887A = MMF gap Reluct gap = 1 10 3- Wb = B A g = Reluct gap 3.979 10 5 amp weber = Reluct gap 1 o l g A g = o 4 10 7- weber amp m = A g 0.001 m 2 = l g 0.0005 m = the dimensions of the airgap are B 1 T =...
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## This note was uploaded on 03/26/2012 for the course ECET 231 taught by Professor Piller during the Spring '12 term at Purdue University-West Lafayette.

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Mathcad - 04-08 - tot MMF gap MMF c + = thus: MMF gap...

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