Numerical-Field Calculation of the Angle Torque Characteristic of the Three-Phase Inductor of the Magnetic Field of the Electromagnetic Stirrer in Processing Dissimilar Mixtures

Abstract

The evaluation of the possibility of using electromagnetic stirrers for dissimilar mixtures in various technological processes requires the study of their work under load conditions. The load mode of the agitator is ensured by the needle ferromagnetic elements moving inside a cylindrical working chamber under the influence of a rotating magnetic field, whose effectiveness can be predicted by analyzing the magnitude and nature of changes at the electromagnetic moment. The magnetic field ensures ordering of the ferromagnetic elements, therefore the magnetic permeability in it along the longitudinal and transverse axes becomes different. Due to the anisotropy of the magnetic properties of the composite medium in the working chamber, strong influences arise on this medium, based on the magnetic tension forces acting on the ferromagnetic ele-ments. The purpose of this work was to present the method of calculation of the electromagnetic moment and determination of its dependence on the angular displacement of the rotating magnetic field of the inductor. The distribution of the magnetic induction inside the working chamber in the idle and load modes was compared, it gave an idea of the distribution of the magnetic field lines in those modes, set out the basic principles for calculation of the angular characteristics of the torque of the electromagnetic stirrer. The proposed method was based on the multi-position numerical calculations of the magnetic fields in the FEMM software package. Comparative calculations of the angular characteristics of the torque were performed at different magnetic permeabilities of the composite medium in the working chamber.

Keywords

• electromagnetic stirrer
• a
• inductor