Speed control of electrical drives with resonant loads

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.advisorSaarakkala, Seppo
dc.contributor.authorAli, Waqas
dc.contributor.departmentElektroniikan laitosfi
dc.contributor.supervisorHinkkanen, Marko
dc.date.accessioned2012-07-02T08:31:23Z
dc.date.available2012-07-02T08:31:23Z
dc.date.issued2011
dc.description.abstractThis thesis deals with the speed control methods of electrical drives with resonant loads such as rolling mill drives with long shafts, robotic arms with flexible couplings and elevators with flexible ropes. The electrical drive with a resonant load is modeled as a two-mass resonant system. Three speed controlling techniques have been designed: a state-space controller, a two-degree-of-freedom (2DOF) controller tuned according to the rigid system model; and a 2DOF controller tuned according to the flexible system model. The state-space controller is designed based on the pole placement technique and with the assumption that all state variables are available. Both 2DOF methods include PI feedback controllers, where two different feed-forward controllers are considered. The design principles and analytical tuning methods of the controllers are presented. Three simulation studies are carried out to test and analyze the reference-tracking capabilities and sensitivity to disturbances of the designed speed controllers. Finally, the benefits and limitations of the speed controllers as well as some recommendations for future research areas are presented.en
dc.format.extent[10] + 56
dc.format.mimetypeapplication/pdf
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/3742
dc.identifier.urnURN:NBN:fi:aalto-201207022708
dc.language.isoenen
dc.locationP1fi
dc.programme.majorTehoelektroniikkafi
dc.programme.mcodeS-81
dc.publisherAalto Universityen
dc.publisherAalto-yliopistofi
dc.rights.accesslevelopenAccess
dc.subject.keywordspeed controlen
dc.subject.keywordtwo-mass resonant systemen
dc.subject.keywordstate-space controlen
dc.subject.keywordtwo-degree-of-freedom controlen
dc.subject.keywordexible systemsen
dc.subject.keywordelectrical drivesen
dc.titleSpeed control of electrical drives with resonant loadsen
dc.typeG2 Pro gradu, diplomityöfi
dc.type.dcmitypetexten
dc.type.okmG2 Pro gradu, diplomityö
dc.type.ontasotDiplomityöfi
dc.type.ontasotMaster's thesisen
dc.type.publicationmasterThesis
local.aalto.digifolderAalto_07386
local.aalto.idinssi42835
local.aalto.openaccessyes
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