Figure 2. The three diagrams illustrate...

Figure 2.

A set of diagrams shows a toroidal inductor, its geometric dimensions, and an equivalent circuit with two base inductors and one long inductor.

The three diagrams illustrate a toroidal inductor system. The first shows a circular core with multiple windings arranged around it and three leads extending downward. The second shows a cross-sectional view with concentric circular regions and labelled dimensions x zero, x one, x two, x three, x four, and x five, indicating geometric parameters. The third shows an equivalent circuit with two inductors labelled L base connected to terminals T one and T two carrying currents I one and I two. These combine into a single inductor labelled L long connected to terminal T three carrying current I one plus I two.

(a) Investigated DUT and (b) cross sections (front-view and side-view) with the input parameters $x = [x_{0}, \dots, x_{5}]$ of the model. The parameters $x_{0}, x_{1}, x_{2}$ are the geometric features of the core while $x_{3}, x_{4}, x_{5}$ represent the number of turns, the thickness and the coverage of one coil. (c) equivalent circuit model of the DUT, where $L_{base}$ models the main inductance of a coil and $L_{long}$ is the longitudinal inductance (Boillat and Kolar, 2012)

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