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EE 2415. Stored Energy in Magnetically Coupled Inductors. Two Coupled Inductors. General Integration Path. Conservative magnetic field Energy independent of path of integration. Simple Path of Integration. Other Simple Path of Integration. Equivalence.

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Ee 2415

EE 2415

Stored Energy in Magnetically Coupled Inductors



General integration path
General Integration Path

  • Conservative magnetic field

  • Energy independent of path of integration




Equivalence
Equivalence

  • In a conservative field, Lkm = Lmk

  • In general:


Aiding and opposing flux
Aiding and Opposing Flux

  • When both currents enter the polarity marks or when both currents exit from the polarity marks, the mutual inductance, Lkm is considered as positive.

  • Otherwise, Lkm is negative.


Aiding and opposing flux1
Aiding and Opposing Flux

  • Here, L12 = L21 would be considered negative.