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Measurement and three-dimensional calculation of induced electromotive force in permanent magnets heater cylinders

Bouakacha Riad, Ouili Mehdi, Allag Hicham, Mehasni Rabia, Chebout Mohammed, Bouchekara Houssem Rafik Al-hana

Metrology and Measurement Systems

2022

Vol. 29, nr 2

315--331

In this work, the electromotive force (EMF) near a permanent magnet heating cylinder was determined using a practical test bench. The aim is to elaborate three-dimensional analytical calculation capable of predicting accurately the same electromagnetic quantities by calculating the induced EMF in the presence of an inductive sensor. The analytical approach is obtained from developing mathematical integrals using the Coulombian approach to permanent magnets. In this approach, rotations are considered by Euler’s transformations matrices permitting the calculation of all permanent magnets flux densities contributions at the same points in the surrounding free space. These points, part of a uniform rectangular grid of the active EMF sensor surface, are used to compute the EMF by Faraday’s law. The validation results between experimental and simulated ones confirm the robustness and the efficiency of the proposed analytical approach.