A Method for the Experimental Determination of Magnetic Permeability at a Stand for Non-Contact Determination of Temperature Characteristics of Electrical and Thermal Properties of Conductive Materials

The article concerns the issue of simultaneous determination of material parameters of electrical conductors. In reference to previous work on a non-contact measurement station enabling the simultaneous determination of electrical and thermal properties of conductive materials, the concept of its extension to include magnetic measurements was analyzed by adding a module for determining the magnetization characteristics of ferromagnetic conductors, integrated with the station. The accuracy of determining the magnetization characteristics of a flat sample closing a magnetic circuit based on a U-shaped ferrite core with using a triangular excitation signal with a frequency of several kilohertz was analyzed through simulation and initially verified experimentally. Based on the measurement systems used, relationships enabling estimation of the magnetization characteristics were developed, and the influence of the geometric parameters of the magnetic circuit and the excitation signal parameters on the magnitude of the measurement error was presented.