A nonlinear and non-ideal wind generator supporting structure
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Outros Autores: | , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/195860 |
Resumo: | We present a simple mathematical model of a wind turbine supporting tower. Here, the wind excitation is considered to be a non-ideal power source. In such a consideration, there is interaction between the energy supply and the motion of the supporting structure. If power is not enough, the rotation of the generator may get stuck at a resonance frequency of the structure. This is a manifestation of the so-called Sommerfeld Effect. In this model, at first, only two degrees of freedom are considered, the horizontal motion of the upper tip of the tower, in the transverse direction to the wind, and the generator rotation. Next, we add another degree of freedom, the motion of a free rolling mass inside a chamber. Its impact with the walls of the chamber provides control of both the amplitude of the tower vibration and the width of the band of frequencies in which the Sommerfeld effect occur. Some numerical simulations are performed using the equations of motion of the models obtained via a Lagrangian approach. |
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A nonlinear and non-ideal wind generator supporting structurewind turbinesnon-ideal power sourcesnon-linear dynamicsimpact damperWe present a simple mathematical model of a wind turbine supporting tower. Here, the wind excitation is considered to be a non-ideal power source. In such a consideration, there is interaction between the energy supply and the motion of the supporting structure. If power is not enough, the rotation of the generator may get stuck at a resonance frequency of the structure. This is a manifestation of the so-called Sommerfeld Effect. In this model, at first, only two degrees of freedom are considered, the horizontal motion of the upper tip of the tower, in the transverse direction to the wind, and the generator rotation. Next, we add another degree of freedom, the motion of a free rolling mass inside a chamber. Its impact with the walls of the chamber provides control of both the amplitude of the tower vibration and the width of the band of frequencies in which the Sommerfeld effect occur. Some numerical simulations are performed using the equations of motion of the models obtained via a Lagrangian approach.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Brazilian government research sponsoring agenciesUniv Sao Paulo, Polytech Sch, Dept Struct & Fdn Engn, BR-05508 Sao Paulo, BrazilUniv Estadual Paulista, IGCE, Dept Appl Math & Computat, Sao Paulo, BrazilUniv Estadual Paulista, IGCE, Dept Appl Math & Computat, Sao Paulo, BrazilTrans Tech Publications LtdUniversidade de São Paulo (USP)Universidade Estadual Paulista (Unesp)Brasil, R. M. L. R. F.Feitosa, L. C. S.Balthazar, J. M. [UNESP]Keogh, P. S.2020-12-10T18:05:43Z2020-12-10T18:05:43Z2006-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject433-+Modern Practice In Stress And Vibration Analysis Vi, Proceedings. Durnten-zurich: Trans Tech Publications Ltd, v. 5-6, p. 433-+, 2006.1660-9336http://hdl.handle.net/11449/195860WOS:000241423300050Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengModern Practice In Stress And Vibration Analysis Vi, Proceedingsinfo:eu-repo/semantics/openAccess2021-10-23T12:19:09Zoai:repositorio.unesp.br:11449/195860Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:02:09.992545Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
A nonlinear and non-ideal wind generator supporting structure |
title |
A nonlinear and non-ideal wind generator supporting structure |
spellingShingle |
A nonlinear and non-ideal wind generator supporting structure Brasil, R. M. L. R. F. wind turbines non-ideal power sources non-linear dynamics impact damper |
title_short |
A nonlinear and non-ideal wind generator supporting structure |
title_full |
A nonlinear and non-ideal wind generator supporting structure |
title_fullStr |
A nonlinear and non-ideal wind generator supporting structure |
title_full_unstemmed |
A nonlinear and non-ideal wind generator supporting structure |
title_sort |
A nonlinear and non-ideal wind generator supporting structure |
author |
Brasil, R. M. L. R. F. |
author_facet |
Brasil, R. M. L. R. F. Feitosa, L. C. S. Balthazar, J. M. [UNESP] Keogh, P. S. |
author_role |
author |
author2 |
Feitosa, L. C. S. Balthazar, J. M. [UNESP] Keogh, P. S. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Brasil, R. M. L. R. F. Feitosa, L. C. S. Balthazar, J. M. [UNESP] Keogh, P. S. |
dc.subject.por.fl_str_mv |
wind turbines non-ideal power sources non-linear dynamics impact damper |
topic |
wind turbines non-ideal power sources non-linear dynamics impact damper |
description |
We present a simple mathematical model of a wind turbine supporting tower. Here, the wind excitation is considered to be a non-ideal power source. In such a consideration, there is interaction between the energy supply and the motion of the supporting structure. If power is not enough, the rotation of the generator may get stuck at a resonance frequency of the structure. This is a manifestation of the so-called Sommerfeld Effect. In this model, at first, only two degrees of freedom are considered, the horizontal motion of the upper tip of the tower, in the transverse direction to the wind, and the generator rotation. Next, we add another degree of freedom, the motion of a free rolling mass inside a chamber. Its impact with the walls of the chamber provides control of both the amplitude of the tower vibration and the width of the band of frequencies in which the Sommerfeld effect occur. Some numerical simulations are performed using the equations of motion of the models obtained via a Lagrangian approach. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006-01-01 2020-12-10T18:05:43Z 2020-12-10T18:05:43Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Modern Practice In Stress And Vibration Analysis Vi, Proceedings. Durnten-zurich: Trans Tech Publications Ltd, v. 5-6, p. 433-+, 2006. 1660-9336 http://hdl.handle.net/11449/195860 WOS:000241423300050 |
identifier_str_mv |
Modern Practice In Stress And Vibration Analysis Vi, Proceedings. Durnten-zurich: Trans Tech Publications Ltd, v. 5-6, p. 433-+, 2006. 1660-9336 WOS:000241423300050 |
url |
http://hdl.handle.net/11449/195860 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Modern Practice In Stress And Vibration Analysis Vi, Proceedings |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
433-+ |
dc.publisher.none.fl_str_mv |
Trans Tech Publications Ltd |
publisher.none.fl_str_mv |
Trans Tech Publications Ltd |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129152756219904 |