{"created":"2025-01-17T07:48:10.595735+00:00","id":2001654,"links":{},"metadata":{"_buckets":{"deposit":"17d3fd8f-2784-4ce0-b6c4-739cac6f8991"},"_deposit":{"created_by":10,"id":"2001654","owners":[10],"pid":{"revision_id":0,"type":"depid","value":"2001654"},"status":"published"},"_oai":{"id":"oai:repository.lib.tottori-u.ac.jp:02001654","sets":["1:10","2:12"]},"author_link":["587"],"item_30002_access_rights4":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_30002_bibliographic_information29":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2024-06-03","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"11","bibliographicPageStart":"2727","bibliographicVolumeNumber":"17","bibliographic_titles":[{"bibliographic_title":"ENERGIES","bibliographic_titleLang":"en"}]}]},"item_30002_creator2":{"attribute_name":"作成者","attribute_type":"creator","attribute_value_mlt":[{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":"15101","affiliationNameIdentifierScheme":"kakenhi"}],"affiliationNames":[{"affiliationName":"鳥取大学","affiliationNameLang":"ja"},{"affiliationName":"Tottori University","affiliationNameLang":"en"}]}],"creatorNames":[{"creatorName":"原,豊","creatorNameLang":"ja","creatorNameType":"Personal"},{"creatorName":"Hara,Yutaka","creatorNameLang":"en","creatorNameType":"Personal"},{"creatorName":"ハラ,ユタカ","creatorNameLang":"ja-Kana","creatorNameType":"Personal"}],"familyNames":[{"familyName":"原","familyNameLang":"ja"},{"familyName":"Hara","familyNameLang":"en"},{"familyName":"ハラ","familyNameLang":"ja-Kana"}],"givenNames":[{"givenName":"豊","givenNameLang":"ja"},{"givenName":"Yutaka","givenNameLang":"en"},{"givenName":"ユタカ","givenNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"587","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"100001652","nameIdentifierScheme":"研究者総覧鳥取大学","nameIdentifierURI":"http://researchers.adm.tottori-u.ac.jp/html/100001652_ja.html"},{"nameIdentifier":"30781687","nameIdentifierScheme":"e-Rad_Researcher","nameIdentifierURI":"https://kaken.nii.ac.jp/ja/search/?qm=30781687"}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":"15101","affiliationNameIdentifierScheme":"kakenhi"}],"affiliationNames":[{"affiliationName":"鳥取大学","affiliationNameLang":"ja"},{"affiliationName":"Tottori University","affiliationNameLang":"en"}]}],"creatorNames":[{"creatorName":"Higami,Hiroyuki","creatorNameLang":"en","creatorNameType":"Personal"}],"familyNames":[{"familyName":"Higami","familyNameLang":"en"}],"givenNames":[{"givenName":"Hiroyuki","givenNameLang":"en"}]},{"creatorNames":[{"creatorName":"Ishikawa,Hiromitsu","creatorNameLang":"en","creatorNameType":"Personal"}],"familyNames":[{"familyName":"Ishikawa","familyNameLang":"en"}],"givenNames":[{"givenName":"Hiromitsu","givenNameLang":"en"}]},{"creatorNames":[{"creatorName":"Ono,Takeshi","creatorNameLang":"en","creatorNameType":"Personal"}],"familyNames":[{"familyName":"Ono","familyNameLang":"en"}],"givenNames":[{"givenName":"Takeshi","givenNameLang":"en"}]},{"creatorNames":[{"creatorName":"Saito,Shigenori","creatorNameLang":"en","creatorNameType":"Personal"}],"familyNames":[{"familyName":"Saito","familyNameLang":"en"}],"givenNames":[{"givenName":"Shigenori","givenNameLang":"en"}]},{"creatorNames":[{"creatorName":"Ichinari,Kenichiro","creatorNameLang":"en","creatorNameType":"Personal"}],"familyNames":[{"familyName":"Ichinari","familyNameLang":"en"}],"givenNames":[{"givenName":"Kenichiro","givenNameLang":"en"}]},{"creatorNames":[{"creatorName":"Yamamoto,Katsushi","creatorNameLang":"en","creatorNameType":"Personal"}],"familyNames":[{"familyName":"Yamamoto","familyNameLang":"en"}],"givenNames":[{"givenName":"Katsushi","givenNameLang":"en"}]}]},"item_30002_date11":{"attribute_name":"日付","attribute_value_mlt":[{"subitem_date_issued_datetime":"2024-06-03","subitem_date_issued_type":"Issued"}]},"item_30002_description9":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"To reduce the cost of small wind turbines, a prototype of a butterfly wind turbine (6.92 m in diameter), a small vertical-axis type, was developed with many parts made of extruded aluminum suitable for mass production. An overspeed control system with movable arms that operated using centrifugal and aerodynamic forces was installed for further cost reduction. Introducing this mechanism eliminates the need for large active brakes and expands the operating wind speed range of the wind turbine. However, although the mechanism involving the use of only bearings is simple, the violent movement of the movable arms can be a challenge. To address this in the present study, dampers were introduced on the movable arm rotation axes to improve the movement of the movable arms. To predict the behavior of a movable arm and the performance of the wind turbine with the mechanism, a simulation method was developed based on the blade element momentum theory and the equation of motion of the movable arm system. A comparison of experiments and predictions with and without dampers demonstrated qualitative agreement. In the case with dampers, measurements confirmed the predicted increase in the rotor rotational speed when the shorter ailerons installed perpendicularly to the movable arms were used to achieve the inclination. Field experiments of the generated power at a wind speed of 6 m/s (10 min average) showed relative performance improvements of 11.4% by installing dampers, 91.3% by shortening the aileron length, and 57.6% by changing the control target data. The movable arm system with dampers is expected to be a useful device for vertical-axis wind turbines that are difficult to control.","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_30002_file35":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","date":[{"dateType":"Available","dateValue":"2024-06-03"}],"displaytype":"detail","fileDate":[{"fileDateType":"Issued","fileDateValue":"2024-06-03"}],"filename":"ene17(11)_2727.pdf","filesize":[{"value":"15.1 MB"}],"format":"application/pdf","licensetype":"license_0","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://repository.lib.tottori-u.ac.jp/record/2001654/files/ene17(11)_2727.pdf"},"version_id":"ca062979-640b-4578-9b3e-b39fd1220543"}]},"item_30002_issue_number25":{"attribute_name":"号","attribute_value_mlt":[{"subitem_issue":"11"}]},"item_30002_language12":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_30002_page_start27":{"attribute_name":"開始ページ","attribute_value_mlt":[{"subitem_start_page":"2727"}]},"item_30002_publisher10":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"MDPI AG","subitem_publisher_language":"en"}]},"item_30002_relation18":{"attribute_name":"関連情報","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"https://doi.org/10.3390/en17112727","subitem_relation_type_select":"DOI"}}]},"item_30002_resource_type13":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_30002_rights6":{"attribute_name":"権利情報","attribute_value_mlt":[{"subitem_rights":"(C) 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).","subitem_rights_language":"en"}]},"item_30002_source_identifier22":{"attribute_name":"収録物識別子","attribute_value_mlt":[{"subitem_source_identifier":"19961073","subitem_source_identifier_type":"EISSN"}]},"item_30002_source_title23":{"attribute_name":"収録物名","attribute_value_mlt":[{"subitem_source_title":"ENERGIES","subitem_source_title_language":"en"}]},"item_30002_subject8":{"attribute_name":"主題","attribute_value_mlt":[{"subitem_subject":"butterfly wind turbine","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"vertical axis","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"overspeed control","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"movable arm","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"aileron","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"damper","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"wind power","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"centrifugal force","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"blade element momentum theory","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"streamtube model","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_30002_title0":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Use of Dampers to Improve the Overspeed Control System with Movable Arms for Butterfly Wind Turbines","subitem_title_language":"en"}]},"item_30002_version_type15":{"attribute_name":"出版タイプ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_30002_volume_number24":{"attribute_name":"巻","attribute_value_mlt":[{"subitem_volume":"17"}]},"item_title":"Use of Dampers to Improve the Overspeed Control System with Movable Arms for Butterfly Wind Turbines","item_type_id":"30002","owner":"10","path":["12","10"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2025-01-22"},"publish_date":"2025-01-22","publish_status":"0","recid":"2001654","relation_version_is_last":true,"title":["Use of Dampers to Improve the Overspeed Control System with Movable Arms for Butterfly Wind Turbines"],"weko_creator_id":"10","weko_shared_id":-1},"updated":"2025-02-13T04:16:23.490650+00:00"}