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Design of Equivalent Circuits and Characterization Strategy for n-Input Coupled Inductors

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2 Author(s)
Margueron, X. ; ENSIEG, Saint-Martin-D''Heres ; Keradec, J.-P.

This paper begins with the definition of ideal coupler, the justification of negative inductance concept and the establishment of various equivalences between circuits. Then, an energy-based recursive method for designing for the equivalent circuit of an n-input magnetic system is presented and the leakage transformer concept is introduced. The obtained circuits allow easy checking of inequalities that inductance matrix elements must satisfy. Advantage is then taken from winding identity and dominant coupling to simplify circuit design. This new knowledge is applied to design equivalent circuits for a three-phase inductor and a three-column six-winding transformer. Finally, key points of a strategy intended to experimental identification of all circuit elements are given

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Industry Applications, IEEE Transactions on  (Volume:43 ,  Issue: 1 )