Compensation of unbalance forces of a switched reluctance machine by separate control of phase currents

The presented work handles the compensation of unbalance forces for a 6/4-Switched Reluctance Machine (SRM), which generate significant radial magnetic forces in an eccentric motor shaft position. When the rotor is operating e.g. in its principal axis of inertia, these forces must be compensated by...

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Autores principales:	Thomas HINTERDORFER, Alexander SCHULZ, Harald SIMA, Johann WASSERMANN
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2015
Materias:	energy storage flywheel numerical simulation electromagnetic force electric machine current control energy efficiency fluxlinkage control unbalance control Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/09bf67f8c7d849d4a373af313ebea3ea
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spelling	oai:doaj.org-article:09bf67f8c7d849d4a373af313ebea3ea2021-11-26T06:27:48ZCompensation of unbalance forces of a switched reluctance machine by separate control of phase currents2187-974510.1299/mej.15-00042https://doaj.org/article/09bf67f8c7d849d4a373af313ebea3ea2015-07-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/2/4/2_15-00042/_pdf/-char/enhttps://doaj.org/toc/2187-9745The presented work handles the compensation of unbalance forces for a 6/4-Switched Reluctance Machine (SRM), which generate significant radial magnetic forces in an eccentric motor shaft position. When the rotor is operating e.g. in its principal axis of inertia, these forces must be compensated by the bearings. This is of major interest for magnetically levitated long term storage flywheels where bearing efficiency is a key factor for the overall system performance. To minimize magnetic pull, the two opposing coils are controlled separately instead of a common serial connection. Three different methods to compensate unbalance forces are presented: The modification of the reference current of the opposing coils, a quasi-parallel connection and a combination of a current controller and a fluxlinkage controller. For the observation of fluxlinkage two different approaches are described. These methods are compared to each other by means of simulation. Due to the back electromotive force (BEMF) in high speed operation, precise current control is a major challenge. Hence the third method is leading to the best results, so it was also implemented on a test rig for validation of the simulation results.Thomas HINTERDORFERAlexander SCHULZHarald SIMAJohann WASSERMANNThe Japan Society of Mechanical Engineersarticleenergy storageflywheelnumerical simulationelectromagnetic forceelectric machinecurrent controlenergy efficiencyfluxlinkage controlunbalance controlMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 2, Iss 4, Pp 15-00042-15-00042 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	energy storage flywheel numerical simulation electromagnetic force electric machine current control energy efficiency fluxlinkage control unbalance control Mechanical engineering and machinery TJ1-1570
spellingShingle	energy storage flywheel numerical simulation electromagnetic force electric machine current control energy efficiency fluxlinkage control unbalance control Mechanical engineering and machinery TJ1-1570 Thomas HINTERDORFER Alexander SCHULZ Harald SIMA Johann WASSERMANN Compensation of unbalance forces of a switched reluctance machine by separate control of phase currents
description	The presented work handles the compensation of unbalance forces for a 6/4-Switched Reluctance Machine (SRM), which generate significant radial magnetic forces in an eccentric motor shaft position. When the rotor is operating e.g. in its principal axis of inertia, these forces must be compensated by the bearings. This is of major interest for magnetically levitated long term storage flywheels where bearing efficiency is a key factor for the overall system performance. To minimize magnetic pull, the two opposing coils are controlled separately instead of a common serial connection. Three different methods to compensate unbalance forces are presented: The modification of the reference current of the opposing coils, a quasi-parallel connection and a combination of a current controller and a fluxlinkage controller. For the observation of fluxlinkage two different approaches are described. These methods are compared to each other by means of simulation. Due to the back electromotive force (BEMF) in high speed operation, precise current control is a major challenge. Hence the third method is leading to the best results, so it was also implemented on a test rig for validation of the simulation results.
format	article
author	Thomas HINTERDORFER Alexander SCHULZ Harald SIMA Johann WASSERMANN
author_facet	Thomas HINTERDORFER Alexander SCHULZ Harald SIMA Johann WASSERMANN
author_sort	Thomas HINTERDORFER
title	Compensation of unbalance forces of a switched reluctance machine by separate control of phase currents
title_short	Compensation of unbalance forces of a switched reluctance machine by separate control of phase currents
title_full	Compensation of unbalance forces of a switched reluctance machine by separate control of phase currents
title_fullStr	Compensation of unbalance forces of a switched reluctance machine by separate control of phase currents
title_full_unstemmed	Compensation of unbalance forces of a switched reluctance machine by separate control of phase currents
title_sort	compensation of unbalance forces of a switched reluctance machine by separate control of phase currents
publisher	The Japan Society of Mechanical Engineers
publishDate	2015
url	https://doaj.org/article/09bf67f8c7d849d4a373af313ebea3ea
work_keys_str_mv	AT thomashinterdorfer compensationofunbalanceforcesofaswitchedreluctancemachinebyseparatecontrolofphasecurrents AT alexanderschulz compensationofunbalanceforcesofaswitchedreluctancemachinebyseparatecontrolofphasecurrents AT haraldsima compensationofunbalanceforcesofaswitchedreluctancemachinebyseparatecontrolofphasecurrents AT johannwassermann compensationofunbalanceforcesofaswitchedreluctancemachinebyseparatecontrolofphasecurrents
_version_	1718409760666025984

Compensation of unbalance forces of a switched reluctance machine by separate control of phase currents

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