3.8 Proceedings Paper

The reduction of fringing-effect power loss in gapped ferrite inductors by changing the resistance and diameter of windings

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QIRT COUNCIL
DOI: 10.21611/qirt.2018.p17

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This article examines power loss and temperature distribution in the windings of gapped ferrite inductors exposed to a high fringing magnetic field at an air gap. The fringing magnetic field generates eddy-current losses in adjacent conductors, impacting the efficiency of power conversion. This extra power loss manifests itself in the form of so-called hotspots, and can be analysed by IR thermography. The presented research shows how a change in the cross-sectional area and/or resistivity of the wires near the air gap can decrease fringing-effect losses.

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