Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/91793
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dc.contributorDepartment of Mechanical Engineeringen_US
dc.creatorXiang, Ben_US
dc.creatorWang, Xen_US
dc.creatorWong, WOen_US
dc.date.accessioned2021-12-13T04:03:11Z-
dc.date.available2021-12-13T04:03:11Z-
dc.identifier.issn2352-152Xen_US
dc.identifier.urihttp://hdl.handle.net/10397/91793-
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.rights© 2021 Elsevier Ltd. All rights reserved.en_US
dc.rights© 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/.en_US
dc.rightsThe following publication Xiang, B., Wang, X., & Wong, W. O. (2022). Process control of charging and discharging of magnetically suspended flywheel energy storage system. Journal of Energy Storage, 47, 103629 is available at https://dx.doi.org/10.1016/j.est.2021.103629.en_US
dc.subjectCharging processen_US
dc.subjectCompound controlen_US
dc.subjectDischarging processen_US
dc.subjectFlywheel energy storage systemen_US
dc.subjectObservation control modelen_US
dc.titleProcess control of charging and discharging of magnetically suspended flywheel energy storage systemen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.volume47en_US
dc.identifier.doi10.1016/j.est.2021.103629en_US
dcterms.abstractFlywheel energy storage system (FESS) is an energy conversion device designed for energy transmission between mechanical energy and electrical energy. There are high requirements on the power capacity, the charging efficiency and the output precision of FESS. Active magnetic bearings are used to suspend the flywheel (FW) rotor of the FESS in air to eliminate friction. A high rotating speed of the flywheel can increase the power capacity but it also increases the disturbance load torque on the FW rotor. An observation control model of load torque is therefore proposed to mitigate the disturbance load torque acting on magnetically suspended FESS (MS-FESS) during the charging process. Moreover, for the discharging process of MS-FESS, a compound control model combing the sliding model control and the extend state observer is proposed to improve the response speed and the output voltage precision. Simulations and experiments are conducted to testify the control performances of proposed control models during the charging and discharging processes of a MS-FESS. The charging efficiency is improved by 17.6% with 46.6% reduction of the output voltage error after using the proposed control models for the charging and discharging process control. The proposed control method has high potential to be applied for process control of charging and discharging of practical MS-FESS.en_US
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationJournal of energy storage, Mar. 2022, v. 47, 103629en_US
dcterms.isPartOfJournal of energy storageen_US
dcterms.issued2022-03-
dc.identifier.scopus2-s2.0-85119668168-
dc.identifier.eissn2352-1538en_US
dc.identifier.artn103629en_US
dc.description.validate202112 bcvcen_US
dc.description.oaAccepted Manuscripten_US
dc.identifier.FolderNumbera1102-n01-
dc.identifier.SubFormID43944-
dc.description.fundingSourceSelf-fundeden_US
dc.description.pubStatusPublisheden_US
dc.description.oaCategoryGreen (AAM)en_US
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