METHOD FOR CALCULATING THE AVERAGED OVER NONMAGNETIC GAP MAGNETIC FLUX DENSITY OF THE AXIAL INDUCTION MOTOR WITH DISCONNECTED MAGNETIC CONDUCTOR

Powerful tumble ball mill is widely used for crushing ore and for rock crushing of coal in thermal power stations be-fore feeding to combustion chamber. To bring the mills into force electric drive is applied using a gear pair: an input shaft and the ring gear. Existing annular gearless drive does not contain a gear pair, but due to its high cost does not apply to ball mill drums. Axial arc-stator induction motors with a non-ferromagnetic rotor disk avoid the main disad-vantages that are present in the existing electric drive ball tumbling mills. In this paper, an analytical method for calcu-lating the magnetic field averaged over the height of the gap of axial arc-stator induction motors with a non-ferromagnetic rotor disk is proposed. The method is developed by the application of integral transforms to the equations of the electromagnetic field. Using the method allows to take into account the finite radial width of the rotor windings, the distribution pattern of windings, the linear speed of the rotor and the frontal parts of stator windings. Using the method can compute magnetic flux density distribution in the axial induction motors with arc-stators and with circular stators.