Experimental Researches of the Cylindrical Linear AC Electronic Motor for the Executive Mechanism for Materials Application

Abstract

The paper examines an experimental research of the cylindrical linear ac electronic motor for the executive mechanism of direct material application. The design of the created cylindrical linear ac electronic motor is considered. The ratios between the frequency and voltage of the frequency converter to obtain the required engine current and thrust power have been found. Experimental researches of the engine were carried out to determine the forces of thrust and friction, with different inductor structures. Friction of the secondary element about the inductor arises due to the presence of “gravity effort”. The working force of the cylindrical linear ac electronic motor is the axial force, which creates a reciprocating motion of the secondary element. “Gravity effort” occurs due to the displacement of the secondary element of the cylindrical linear ac electronic motor relative to the inductor axis. Herewith, the gap between the inductor and the secondary element is uneven. As a result of experimental researches it turned out that the “gravity effort” and therefore friction, significantly. As a result, the resulting friction must be taken into account in the work of the CTD. Based on the experimental data, it was concluded that nonmagnetic centralizers were needed. They are arranged in a certain way, to reduce the forces of friction. It was also decided to change the inductor's design to an axisymmetrical one. As a result, the “gravity effort” and the amount of friction are significantly reduced, and the force of thrust increases.