HIGH FORCE HEAVY DUTY DIRECT CURRENT ACTUATOR

Auteurs

  • DRAGOS-STEFAN NICOLESCU ICPE, Department of Electrical Apparatus, Bucharest, Romania Author
  • ALEXANDRU RADULIAN ICPE, Department of Electrical Apparatus, Bucharest, Romania Author
  • MIHAI MARICARU University POLITEHNICA of Bucharest, Department of Electrical Engineering, Bucharest, Romania Author
  • SEBASTIAN PRICA University POLITEHNICA of Bucharest, Faculty of Electrical Engineering, Bucharest, Romania Author

Mots-clés :

Linear direct current actuator, Nd-Fe-B permanent magnets, High force, High holding force, High air gap, Ferromagnetic circuit, Numerical analysis, Specially designed coils

Résumé

This paper presents the design, simulation, and experimental validation of a direct current linear actuator. The proposed actuator is similar in design to an electromagnet, but it uses Nd-Fe-B permanent magnets for producing a high holding force when it is in the closed position. From this point of view, the main purpose of this paper is to analyze the working principle of the actuator and to explain the advantages obtained by using a special geometry of the magnetic circuit. Such a linear actuator can be used in electrical equipment, like high voltage vacuum circuit breakers. The proposed linear actuator ensures high force during the closing, which is produced by a coil specially designed for this maneuver, and also a high force when the air gap is minimum, produced by Nd-Fe-B permanent magnets. The magnetic problem was solved using FEMM package, which has a specially designed LUA script incorporated in it. Mechanical parameters were determined with MATLAB program, by implementing numerical integration.

Références

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Publiée

— Mis à jour le 2022-01-09

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Numéro

Rubrique

Électrotechnique et électroénergétique | Electrical and Power Engineering

Comment citer

HIGH FORCE HEAVY DUTY DIRECT CURRENT ACTUATOR. (2022). REVUE ROUMAINE DES SCIENCES TECHNIQUES — SÉRIE ÉLECTROTECHNIQUE ET ÉNERGÉTIQUE, 66(3), 139-143. https://journal.iem.pub.ro/rrst-ee/article/view/29 (Original work published 2021)