Modeling of a Wind Turbine Rotor-Blade System and its Applications

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atmire.migration.oldid5871
dc.contributor.advisorSun, Qiao
dc.contributor.authorJu, Dayuan
dc.contributor.committeememberPieper, Jeff
dc.contributor.committeememberWood, David
dc.contributor.committeememberKuo, Arthur
dc.contributor.committeememberXi, FengFeng
dc.date.accessioned2017-08-22T21:29:08Z
dc.date.available2017-08-22T21:29:08Z
dc.date.issued2017
dc.date.submitted2017en
dc.description.abstractIn order for wind energy to become a viable replacement for fossil fuels, recent years have seen an intense effort to address wind turbine efficiency and cost. A significant amount of attention has been placed on innovative blade design, advanced control strategies, and cost reduction, for example by minimizing turbine downtime through preventative maintenance. An accurate model can help in turbine system design, validation, performance evaluation, and optimization. It can also become an integral part of model-based control and model-based machine health condition monitoring solutions. This thesis develops a dynamics model for a rotor blade system in horizontal axis wind turbines. Although there exists the well-known FAST model, its great advantage of being general purpose also poses great limitations. For example, it does not enable root cause analysis in machine health monitoring solutions. This thesis proposes to improve model accuracy by including additional coupling terms. Our model was validated against FAST while suppressing the coupling terms. By including the fine details of the coupling between the rotor gross motion and the blade elastic deformation, blade vibration as a result of load distribution or blade health condition can be observed from rotor behavior with much greater sensitivity. With the proposed model, we designed an observer in order to estimate the wind speed from the rotor-blade dynamics response, which will help improve wind turbine performance. We have also demonstrated the use of our model to investigate the relation between rotor-blade motion and the generator behavior. The result is helpful in developing effective techniques for detecting faulty blades from generator signals.en_US
dc.identifier.citationJu, D. (2017). Modeling of a Wind Turbine Rotor-Blade System and its Applications (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/26945en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/26945
dc.identifier.urihttp://hdl.handle.net/11023/4027
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectEnergy
dc.subjectEngineering--Mechanical
dc.subject.otherWind Turbine
dc.subject.otherblade vibration
dc.subject.othercoupling
dc.subject.otherfluid structure interaction
dc.subject.otherestimation
dc.titleModeling of a Wind Turbine Rotor-Blade System and its Applications
dc.typedoctoral thesis
thesis.degree.disciplineMechanical and Manufacturing Engineering
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameDoctor of Philosophy (PhD)
ucalgary.item.requestcopytrue
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