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Sensors 2017, 17(12), 2953;

3D-Printed Detector Band for Magnetic Off-Plane Flux Measurements in Laminated Machine Cores

Institute of Electrodynamics, Microwave and Circuit Engineering, TU Wien, Gußhausstraße 25/354, 1040 Vienna, Austria
Author to whom correspondence should be addressed.
Received: 7 November 2017 / Revised: 6 December 2017 / Accepted: 7 December 2017 / Published: 19 December 2017
(This article belongs to the Special Issue Magnetic Sensors and Their Applications)
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Laminated soft magnetic cores of transformers, rotating machines etc. may exhibit complex 3D flux distributions with pronounced normal fluxes (off-plane fluxes), perpendicular to the plane of magnetization. As recent research activities have shown, detections of off-plane fluxes tend to be essential for the optimization of core performances aiming at a reduction of core losses and of audible noise. Conventional sensors for off-plane flux measurements tend to be either of high thickness, influencing the measured fluxes significantly, or require laborious preparations. In the current work, thin novel detector bands for effective and simple off-plane flux detections in laminated machine cores were manufactured. They are printed in an automatic way by an in-house developed 3D/2D assembler. The latter enables a unique combination of conductive and non-conductive materials. The detector bands were effectively tested in the interior of a two-package, three-phase model transformer core. They proved to be mechanically resilient, even for strong clamping of the core. View Full-Text
Keywords: flux distribution; off-plane flux; machine cores; magnetic sensors flux distribution; off-plane flux; machine cores; magnetic sensors

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Shilyashki, G.; Pfützner, H.; Palkovits, M.; Windischhofer, A.; Giefing, M. 3D-Printed Detector Band for Magnetic Off-Plane Flux Measurements in Laminated Machine Cores. Sensors 2017, 17, 2953.

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