Development of a hardware-software system for the experimental study of the ferromagnetic groove carrying conductor surface
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.
The research and development of inclination angle magnetic fluid detector with a movable sensing element based on permanent magnets
Abstract The article presents an account on some new designs, which have been developed for the magnetic fluid sensor with a movable sensor based on permanent magnets with the support of Ivanovo State Power Engineering University. The research carried out is aimed at elucidating the influence of the detector sensing element on its operating performance.
Calculation of magnetic system of the magnetoelectric machines
This paper provides an analytical solution to one of the main objectives within theoretical foundations of electrical engineering, formulated in particular to reflect the decision making while designing new types of synchronous generators with permanent magnets. The necessary for such generators is determined, above all, by development of the area of small-scale energy sector due to the emergence on the consumer market of affordable and accessible strong magnets of neodymium alloy NdFeB. The purpose of this paper is to obtain an analytical solution for the determination of the induced Electromotive Force (EMF) in the loop placed in a magnetic field of the permanent magnet of rectangular cross-sectional shape while in relative motion. A generalization of the results of research on an arbitrary cross-sectional shape of the permanent magnet is presented. An example of in the calculation of the magnetic system of a magneto-disk machines based on the finite element analysis by software ANSYS is provided.