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Titre du document / Document title

The Dynamic Analysis of an Energy Storage Flywheel System With Hybrid Bearing Support

Auteur(s) / Author(s)

HONGCHANG WANG (1) ; SHUYUN JIANG (1) ; ZUPEI SHEN (2) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) School of Mechanical Engineering, Southeast University, 2 Southeast Road, JiangNing District, NanJing, 210096, CHINE
(2) Department of Engineering Physics, Tsinghua University, Beijing 100084, CHINE

Résumé / Abstract

Active magnetic bearings and superconducting magnetic bearings were used on a highspeed flywheel energy storage system; however, their wide industrial acceptance is still a challenging task because of the complexity in designing the elaborate active control system and the difficulty in satisfying the cryogenic condition. A hybrid bearing consisting of a permanent magnetic bearing and a pivot jewel bearing is used as the support for the rotor of the energy storage flywheel system. It is simple and has a long working life without requiring maintenance or an active control system. The two squeeze film dampers are employed in the flywheel system to suppress the lateral vibration, to enhance the rotor leaning stability, and to reduce the transmitted forces. The dynamic equation of the flywheel with four degrees of complex freedom is built by means of the Lagrange equation. In order to improve accuracy, the finite element method is utilized to solve the Reynolds equation for the dynamic characteristics of the squeeze film damper. When the calculated unbalance responses are compared with the test responses, they indicate that the dynamics model is correct. Finally, the effect of the squeeze film gap on the transmitted force is analyzed, and the appropriate gap should be selected to cut the energy loss and to control vibration of the flywheel system.

Revue / Journal Title

Journal of vibration and acoustics    ISSN  1048-9002 

Source / Source

2009, vol. 131, no5, [Note(s): 051006.1-051006.9] (21 ref.)

Langue / Language

Anglais

Editeur / Publisher

American Society of Mechanical Engineers, New York, NY, ETATS-UNIS  (1990) (Revue)

Mots-clés anglais / English Keywords

Unbalanced conditions

;

Dynamic model

;

Reynolds equation

;

Modeling

;

Finite element method

;

Lagrange equation

;

Damper

;

Cryogenic temperature

;

Energy storage system

;

Verticality

;

Defect

;

Bending vibration

;

Vibration damping

;

Squeeze film

;

Maintenance

;

Tilting pad bearing

;

Hydrostatic lubrication

;

Hydrodynamic lubrication

;

Cryogenics

;

Magnetic bearing

;

Active system

;

Hybrid bearing

;

Flywheel

;

Mots-clés français / French Keywords

Régime déséquilibré

;

Modèle dynamique

;

Equation Reynolds

;

Modélisation

;

Méthode élément fini

;

Equation Lagrange

;

Amortisseur

;

Température cryogénique

;

Accumulateur énergie

;

Verticalité

;

Défaut

;

Vibration flexion

;

Amortissement vibration

;

Film comprimé

;

Maintenance

;

Palier segment pivotant

;

Lubrification hydrostatique

;

Lubrification hydrodynamique

;

Cryogénie

;

Palier magnétique

;

Système actif

;

Palier hybride

;

Volant inertie

;

Mots-clés espagnols / Spanish Keywords

Régimen desequilibrado

;

Modelo dinámico

;

Ecuación Reynolds

;

Modelización

;

Método elemento finito

;

Ecuación Lagrange

;

Amortiguador

;

Temperatura criogénica

;

Acumulador energía

;

Verticalidad

;

Defecto

;

Vibración flexión

;

Amortiguación vibración

;

Película comprimida

;

Mantenimiento

;

Cojinete segmento oscilante

;

Lubrificación hidrostática

;

Lubrificación hidrodinámica

;

Criogenia

;

Cojinete magnético

;

Sistema activo

;

Cojinete hibrido

;

Volante de inercia

;

Mots-clés d'auteur / Author Keywords

flywheel energy storage system

;

hybrid bearing

;

rotor dynamics

;

squeeze film dampers

;

finite element method

;

transmitted force

;

Localisation / Location

INIST-CNRS, Cote INIST : 6120 L1, 35400017035073.0060

Nº notice refdoc (ud4) : 22069039



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