Planetary backup bearings for high speed applications and service life estimation methodology

Backup bearings (BB) limit the translational movement of rotors during malfunction, overload or power loss in the active magnetic bearings (AMB) in order to enable safe spin down and reduce secondary damage. Especially for high speed applications like flywheels with high rotor inertia, the requireme...

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Autores principales:	Lukas QUURCK, Daniel FRANZ, Benedikt SCHUESSLER, Stephan RINDERKNECHT
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2017
Materias:	backup bearing flywheel kinetic energy storage lifetime service life Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/84acbe1c7a6e43c2a5b15c6c82861b07
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spelling	oai:doaj.org-article:84acbe1c7a6e43c2a5b15c6c82861b072021-11-26T07:11:27ZPlanetary backup bearings for high speed applications and service life estimation methodology2187-974510.1299/mej.17-00010https://doaj.org/article/84acbe1c7a6e43c2a5b15c6c82861b072017-06-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/4/5/4_17-00010/_pdf/-char/enhttps://doaj.org/toc/2187-9745Backup bearings (BB) limit the translational movement of rotors during malfunction, overload or power loss in the active magnetic bearings (AMB) in order to enable safe spin down and reduce secondary damage. Especially for high speed applications like flywheels with high rotor inertia, the requirements towards the load capacity and service life of the BB is comparably high. For a special type of flywheel with exceptionally high speeds in the BB interface, a planetary BB system is presented. The planetary BB consists of multiple bearing units placed circumferentially around the stator. Its elastic properties are described as well as a contact damping model. For cost efficient BB investigation, a scaled test rig is introduced and a parametric study of different delevitation simulations is done. Several quantification methods to evaluate severity, bearing loads and lifetime utilization during rotor delevitations are presented and applied to the simulations. Using a dry friction model a service life estimation of MoS2 ball bearing lubrication is made. The applicability of the planetary BB to vertical high speed rotors is confirmed by the simulation data and bearing element selection is affirmed. The results of the quantification methodologies show specific correlation to initial conditions and parameters like unbalance and in particular friction coefficient. Further the influence of the rotor weight and size to the bearing loads is investigated.Lukas QUURCKDaniel FRANZBenedikt SCHUESSLERStephan RINDERKNECHTThe Japan Society of Mechanical Engineersarticlebackup bearingflywheelkinetic energy storagelifetimeservice lifeMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 4, Iss 5, Pp 17-00010-17-00010 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	backup bearing flywheel kinetic energy storage lifetime service life Mechanical engineering and machinery TJ1-1570
spellingShingle	backup bearing flywheel kinetic energy storage lifetime service life Mechanical engineering and machinery TJ1-1570 Lukas QUURCK Daniel FRANZ Benedikt SCHUESSLER Stephan RINDERKNECHT Planetary backup bearings for high speed applications and service life estimation methodology
description	Backup bearings (BB) limit the translational movement of rotors during malfunction, overload or power loss in the active magnetic bearings (AMB) in order to enable safe spin down and reduce secondary damage. Especially for high speed applications like flywheels with high rotor inertia, the requirements towards the load capacity and service life of the BB is comparably high. For a special type of flywheel with exceptionally high speeds in the BB interface, a planetary BB system is presented. The planetary BB consists of multiple bearing units placed circumferentially around the stator. Its elastic properties are described as well as a contact damping model. For cost efficient BB investigation, a scaled test rig is introduced and a parametric study of different delevitation simulations is done. Several quantification methods to evaluate severity, bearing loads and lifetime utilization during rotor delevitations are presented and applied to the simulations. Using a dry friction model a service life estimation of MoS2 ball bearing lubrication is made. The applicability of the planetary BB to vertical high speed rotors is confirmed by the simulation data and bearing element selection is affirmed. The results of the quantification methodologies show specific correlation to initial conditions and parameters like unbalance and in particular friction coefficient. Further the influence of the rotor weight and size to the bearing loads is investigated.
format	article
author	Lukas QUURCK Daniel FRANZ Benedikt SCHUESSLER Stephan RINDERKNECHT
author_facet	Lukas QUURCK Daniel FRANZ Benedikt SCHUESSLER Stephan RINDERKNECHT
author_sort	Lukas QUURCK
title	Planetary backup bearings for high speed applications and service life estimation methodology
title_short	Planetary backup bearings for high speed applications and service life estimation methodology
title_full	Planetary backup bearings for high speed applications and service life estimation methodology
title_fullStr	Planetary backup bearings for high speed applications and service life estimation methodology
title_full_unstemmed	Planetary backup bearings for high speed applications and service life estimation methodology
title_sort	planetary backup bearings for high speed applications and service life estimation methodology
publisher	The Japan Society of Mechanical Engineers
publishDate	2017
url	https://doaj.org/article/84acbe1c7a6e43c2a5b15c6c82861b07
work_keys_str_mv	AT lukasquurck planetarybackupbearingsforhighspeedapplicationsandservicelifeestimationmethodology AT danielfranz planetarybackupbearingsforhighspeedapplicationsandservicelifeestimationmethodology AT benediktschuessler planetarybackupbearingsforhighspeedapplicationsandservicelifeestimationmethodology AT stephanrinderknecht planetarybackupbearingsforhighspeedapplicationsandservicelifeestimationmethodology
_version_	1718409729950089216

Planetary backup bearings for high speed applications and service life estimation methodology

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