Sommaire général

Bobines d'induction en régime sinusoïdal

III. Influences entre plusieurs bobines

1. Présentation

Dans de nombreuses situations, des circuits élecriques s’influencent mutuellement, le courant circulant à travers l’un engendre un champ magnétique à travers un autre.

Ces effets peuvent être recherchés ou pénalisant dans certaines situations.

L’étude qui suit porte sur un système constitué de deux bobines partageant un même circuit magnétique. Les schémas ci-dessous indiquent les conventions utilisées :

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B1B2i1(t)v1(t)B1B2i2(t)v2(t)e2(t)e1(t)Φ(t)

Les sens de bobinage peuvent être retrouvés.

i1(t)v1(t)i2(t)v2(t)e2(t)e1(t)

Les sens de bobinage ne sont pas représentés. Les points repèrent les têtes d’enroulement. Cette information est équivalente aux sens de bobinage.