The standard field-sensing method to measure the power loss of electrical steel sheet under two-dimensional measuring conditions makes use of two independent sensor systems which pick up the vector components of the flux density B and the magnetic field strength H, respectively. The components of B can be measured, on the one hand, by means of search coils wound around a well defined part of the cross sectional area of the steel sheet sample and, on the other hand, by means of tips placed on the surface of the sample [1]. The components of H can be picked up by Rogowski-Chattock coils, or by tangential search coils placed directly at the surface [1]. The difficulties of the investigation of the power loss with this type of sensors lie in the correct positioning of the field sensing coils, especially in the case of two-dimensional measurements with its restrictions of geometry and symmetry of the measurement setup. In this paper, a sensor system is proposed that allows a fast and integral measurement of the signals by which the power loss in the whole sample volume is determined independent of the geometry and positioning of the sample in the setup.
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