INFLUENCE OF THE POLES SHAPE OF A DC ELECTROMAGNETIC ACTUATOR ON ITS THRUST CHARACTERISTIC

Autor: O. M. Grechko
Jazyk: English<br />Ukrainian
Rok vydání: 2024
Předmět:
Zdroj: Технічна електродинаміка, Iss 1, Pp 038-038 (2024)
Druh dokumentu: article
ISSN: 1607-7970
2218-1903
DOI: 10.15407/techned2024.01.038
Popis: Introduction. Many technical objects use electromagnetic DC actuators, which, unlike AC actuators, are more reliable, simpler in terms of manufacturing technology and have greater mechanical wear resistance. The listed advantages are the reason for the significant use of DC actuators in various industries, including as drive mechanisms of electrical devices. As part of any technical object, a DC actuator almost always plays one of the main roles from the point of view of reliable operation of the entire device. Therefore, the question of studying the designs of actuators and their characteristics is a rather urgent task. Aim. Establishing the nature of the influence of the shape of the support surfaces of the poles of a direct current electromagnetic actuator on its static thrust characteristic. Methodology. To carry out numerical calculations of the static thrust characteristics of a DC actuator, the article applies the finite element method using the open access FEMM program. Originality. Research into forward-moving cylindrical electromagnetic DC actuators has been further developed to establish the nature of the impact of the shape of the supporting surfaces of the poles on their static thrust characteristics. Results. Three designs of forward electromagnetic DC actuators with the same overall dimensions and winding data, which differ in the shapes of the support surfaces of the poles - with flat, conical and cut-conical shapes, have been studied. It has been established that the shape of the support surfaces of the poles has a significant impact on the shape of the thrust characteristics of the actuator and, depending on the value of the air gap, this effect has a different character. Pictures of the magnetic field of the studied actuators with an attracted armature were constructed, and the nature of the distribution of the magnetic field and the distribution of magnetic flux density in the air working gap was assessed. The nature of the influence of the cut angle on the static thrust characteristic for actuators with conical and cut-conical pole shapes has been studied. References 29, tables 1, figures 7.
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