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excellent study note on Eddy Current & Hyst by IIT professor

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excellent study note on Eddy Current & Hyst by IIT professor

Postby subham » Mon Nov 05, 2012 10:43 am

hi friend download excellent study note on Eddy Current & Hyst by IIT professor (Kharagpur). every one should go through it.

Contents

22 Eddy Current & Hysteresis Losses (Lesson 22) 4

22.1 Lesson goals …………………………………………………………………. 4

22.2 Introduction ………………………………………………………………….. 4

22.2.1 Voltage induced in a stationary coil placed in a time varying field … 5

22.2.2 Eddy current ………………………………………………………… 7

22.2.3 Use of thin plates or laminations for core …………………………... 7

22.2.4 Derivation of an expression for eddy current loss in a thin plate …… 8

22.3 Hysteresis Loss ……………………………………………………………… 10

22.3.1 Undirectional time varying exciting current ………………………... 10

22.3.2 Energy stored, energy returned & energy density…………………… 10

22.4 Hysteresis loop with alternating exciting current ……………………………. 12

22.4.1 Hysteresis loss & loop area …………………………………………. 13

22.5 Seperation of core loss ………………………………………………………. 14

22.6 Inductor ……………………………………………………………………… 16

22.7 Force between two opposite faces of the core across an air gap …………….. 18

22.8 Tick the correct answer ……………………………………………………… 19

22.9 Solve the following …………………………………………………………... 20
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