Development of a hardware-software system for the experimental study of the ferromagnetic groove carrying conductor surface

Abstract

The paper presents the results of an experimental study of the ferromagnetic groove electromagnetic field based on a developed laboratory bench equipped with a hardware — software measuring system. A technique for determining the current density in the conductor cross-section by measuring the magnetic field induction when immersing two types of sensors (frameless fine measuring coil and Hall sensor of a digital millislotometer) has been implemented for various depths inside the groove. The use of a measuring coil as a sensor makes it possible to obtain the current density distribution over the conductor height through the procedure of integrating the voltage proportional to the EMF induced in the measuring coil using a LabVIEW environment-built in a digital integrator. Measurement of magnetic field induction by the Hall digital sensor at a laboratory bench provides the measuring coil verification and the reliability of the experimental study results determination. With the help of the hardware-software complex, a distribution of the current density and magnetic induction along the conductor height in the ferromagnetic groove is obtained at a laboratory bench. The results of an experimental investigation of the surface effect are compared with the results of calculating the alternating magnetic field of a conductor with a current in a ferromagnetic groove in the Elcut 5.6 program complex. The active and the inductive conductor resistance at the industrial frequency are determined.