Rational geometric parameters selection of a linear electromagnetic press with low plunger stroke

Authors: Efimova Yu. B.

The article presents a study of the geometric parameters influence on its power characteristics and efficiency of a press linear electromagnetic motor with a low plunger (armature) stroke used in the repair and restoration of mining equipment. The press based on a linear electromagnetic motor is reliable, mobile, environmentally friendly, energy efficient, does not require highly qualified personnel for maintenance. The analysis of the geometrical dimensions influence of the press electric motor on its specific power characteristics was carried out using numerical modeling of the magnetic field in the FEMM environment, and an algorithm for determining the geometric dimensions has been developed, while maintaining the thermal dimension of the windings for the operation of an electromagnetic press in conditions of natural air cooling, as well as taking into account the material of the magnetic circuit and its degree of saturation. The calculation of two presses with a maximum pressing force of 10 kN was made and their main indicators were compared with a press of the same power used in industry. It is shown that the geometric parameters rational choice of the press in preliminary design, taking into account the technological process, such as the hyperbolic thrust characteristic with a sharp increase in the force towards the end of the plunger stroke and the magnetic circuit saturation caused by the armature low stroke, allows to improve the values of the specific maximum tractive effort and work by more than one and a half times without reducing the efficiency.

Keywords: Linear electromagnetic press, Repair and restoration works, Geometry optimization, Numerical modeling, Сore saturation, Power and energy characteristics, Small plunger stroke, Hyperbolic resistance characteristic of materials.
For citation:

Efimova Yu. B. Rational geometric parameters selection of a linear electromagnetic press with low plunger stroke. MIAB. Mining Inf. Anal. Bull. 2022;(12-2):115—128. [In Russ]. DOI: 10.25018/0236_1493_2022_122_0_115.

Issue number: 12
Year: 2022
Page number: 115-128
ISBN: 0236-1493
UDK: 622.012.7,621.313
DOI: 10.25018/0236_1493_2022_122_0_115
Article receipt date: 24.01.2022
Date of review receipt: 27.09.2022
Date of the editorial board′s decision on the article′s publishing: 10.11.2022
About authors:

Efimova Yu. B., Cand. Sci. (Eng.), Associate Professor of the Department of Theoretical Foundations of Electrical Engineering, NSTU, https://orcid.org/0000-0002-9536-9710, Federal State Budgetary Educational Institution of Higher Education “Novosibirsk State Technical University”, 20 Prospekt K. Marksa, Novosibirsk, 630073, Russia, е-mail: u_b_efimova@mail.ru.

For contacts:

Efimova Yu. B., е-mail: u_b_efimova@mail.ru.


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