Thrust actuator with passive restoration force for wide gap magnetic bearings
Fecha
2019Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión aceptada / Onetsi den bertsioa
Impacto
|
10.1016/j.jmmm.2018.12.085
Resumen
Active thrust magnetic bearings provide an axial force to balance the moving parts of machines. However, most devices produce null or unbalancing passive forces. Furthermore, reported designs usually feature very small axial and radial gaps. This paper presents a thrust actuator for wide axial gaps that produces both passive and active restoring axial forces. It features a long biconical rotor an ...
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Active thrust magnetic bearings provide an axial force to balance the moving parts of machines. However, most devices produce null or unbalancing passive forces. Furthermore, reported designs usually feature very small axial and radial gaps. This paper presents a thrust actuator for wide axial gaps that produces both passive and active restoring axial forces. It features a long biconical rotor and a stator housing a single winding and two permanent magnets. Simulations are done using finite-element-analysis (FEA) and compared to magnetic circuit analysis and experimental results from a prototype with a diameter of 48 mm and 20 mm axial displacement. [--]
Materias
Finite element method,
Magnetic bearing,
Magnetic forces,
Thrust actuator,
Wide gap
Editor
Elsevier
Publicado en
Journal of Magnetism and Magnetic Materials, 476 (2019) 342-348
Departamento
Universidad Pública de Navarra. Departamento de Ciencias /
Nafarroako Unibertsitate Publikoa. Zientziak Saila /
Universidad Pública de Navarra/Nafarroako Unibertsitate Publikoa. Institute for Advanced Materials and Mathematics - INAMAT2
Versión del editor
Entidades Financiadoras
This work has been performed within the framework of the project BISENINT, financially supported by the Ministerio de Economía y Competitividad of Spain as part of the Programa Estatal de I+D+ I Orientada a los Retos de la Sociedad under record/grant RTC-2014-2517-5.