Design of active magnetic bearing rotors and their control method for passing through fourth bending critical speed

These days, centrifugal compressors and other industrial turbomachines tend to be faster, downsized, and reduced in cost. If a technology can be established for operation of machines over higher critical speed using an active magnetic bearing, the number of impellers per casing can be increased, all...

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Autores principales:	Hiroyuki FUJIWARA, Kazutoshi YANAGIHARA, Osami MATSUSHITA, Osamu TOKUDA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2019
Materias:	active magnetic bearing flexible rotor bending mode critical speed controller design Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/ea96bfa5305f4730ab731ad835f34e63
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spelling	oai:doaj.org-article:ea96bfa5305f4730ab731ad835f34e632021-11-29T05:43:34ZDesign of active magnetic bearing rotors and their control method for passing through fourth bending critical speed2187-974510.1299/mej.18-00481https://doaj.org/article/ea96bfa5305f4730ab731ad835f34e632019-05-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/6/3/6_18-00481/_pdf/-char/enhttps://doaj.org/toc/2187-9745These days, centrifugal compressors and other industrial turbomachines tend to be faster, downsized, and reduced in cost. If a technology can be established for operation of machines over higher critical speed using an active magnetic bearing, the number of impellers per casing can be increased, allowing downsizing and cost reduction of trains. In this study, experimental equipment of a flexible rotor supported by active magnetic bearings was developed to carry out experiments as a step toward developing the technology. The following results were obtained, (1) Mass distribution in designing flexible rotors allows adjustment of the critical speed by design. (2) With the modal balancing method under higher critical speed, the sixth critical speed was passed through, the world's first achievement of this.Hiroyuki FUJIWARAKazutoshi YANAGIHARAOsami MATSUSHITAOsamu TOKUDAThe Japan Society of Mechanical Engineersarticleactive magnetic bearingflexible rotorbending modecritical speedcontroller designMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 6, Iss 3, Pp 18-00481-18-00481 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	active magnetic bearing flexible rotor bending mode critical speed controller design Mechanical engineering and machinery TJ1-1570
spellingShingle	active magnetic bearing flexible rotor bending mode critical speed controller design Mechanical engineering and machinery TJ1-1570 Hiroyuki FUJIWARA Kazutoshi YANAGIHARA Osami MATSUSHITA Osamu TOKUDA Design of active magnetic bearing rotors and their control method for passing through fourth bending critical speed
description	These days, centrifugal compressors and other industrial turbomachines tend to be faster, downsized, and reduced in cost. If a technology can be established for operation of machines over higher critical speed using an active magnetic bearing, the number of impellers per casing can be increased, allowing downsizing and cost reduction of trains. In this study, experimental equipment of a flexible rotor supported by active magnetic bearings was developed to carry out experiments as a step toward developing the technology. The following results were obtained, (1) Mass distribution in designing flexible rotors allows adjustment of the critical speed by design. (2) With the modal balancing method under higher critical speed, the sixth critical speed was passed through, the world's first achievement of this.
format	article
author	Hiroyuki FUJIWARA Kazutoshi YANAGIHARA Osami MATSUSHITA Osamu TOKUDA
author_facet	Hiroyuki FUJIWARA Kazutoshi YANAGIHARA Osami MATSUSHITA Osamu TOKUDA
author_sort	Hiroyuki FUJIWARA
title	Design of active magnetic bearing rotors and their control method for passing through fourth bending critical speed
title_short	Design of active magnetic bearing rotors and their control method for passing through fourth bending critical speed
title_full	Design of active magnetic bearing rotors and their control method for passing through fourth bending critical speed
title_fullStr	Design of active magnetic bearing rotors and their control method for passing through fourth bending critical speed
title_full_unstemmed	Design of active magnetic bearing rotors and their control method for passing through fourth bending critical speed
title_sort	design of active magnetic bearing rotors and their control method for passing through fourth bending critical speed
publisher	The Japan Society of Mechanical Engineers
publishDate	2019
url	https://doaj.org/article/ea96bfa5305f4730ab731ad835f34e63
work_keys_str_mv	AT hiroyukifujiwara designofactivemagneticbearingrotorsandtheircontrolmethodforpassingthroughfourthbendingcriticalspeed AT kazutoshiyanagihara designofactivemagneticbearingrotorsandtheircontrolmethodforpassingthroughfourthbendingcriticalspeed AT osamimatsushita designofactivemagneticbearingrotorsandtheircontrolmethodforpassingthroughfourthbendingcriticalspeed AT osamutokuda designofactivemagneticbearingrotorsandtheircontrolmethodforpassingthroughfourthbendingcriticalspeed
_version_	1718407619521019904

Design of active magnetic bearing rotors and their control method for passing through fourth bending critical speed

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