Influence of Magnetic Field Attenuation on Linear Induction Motor Performance

The paper examines the influence of attenuation of traveling-field magnetic wave over air thickness and conducting gap. The task of determining the distribution of magnetic field and integral values of forces is solved using finite element method in a two-dimensional formulation. The efforts are determined using the Lorentz and Maxwell approach. The averaged magnitudes of magnetic flux density along the x coordinate are given depending on the y component, namely, the thickness of the gap and the conducting layer of the secondary element. The subject of the study is a linear asynchronous motor conveyor transport for the transport of minerals. The influence of the frequency change on the attenuation of an electromagnetic wave in the air gap and the conducting layer of the secondary element and on the mechanical characteristics and pull forces is determined.