Study on Load Reduction and Vibration Control Strategies for Semi-Submersible Offshore Wind Turbines

Study on Load Reduction and Vibration Control Strategies for Semi-Submersible Offshore Wind Turbines | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Study on Load Reduction and Vibration Control Strategies for Semi-Submersible Offshore Wind Turbines Dongxiao Bai, Bing Wang, Yinsheng Li, Wancheng Wang This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4941718/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 07 Jan, 2025 Read the published version in Scientific Reports → Version 1 posted 10 You are reading this latest preprint version Abstract Independent pitch control is a crucial technology for enhancing the performance of wind turbines by effectively managing each blade to optimize power output and reduce loads. This paper explores the primary vibration modes of semi-submersible wind turbines under wind-wave coupling. Given the effectiveness of pitch control in vibration suppression, the study addresses the limitations of conventional unified pitch control. It proposes an independent pitch control method based on an equivalent wind speed model. This model simplifies the analysis of wind speed effects on blade angle adjustments, thus improving control accuracy and response speed. The equivalent wind speed model, which integrates the spatial distribution of actual wind speeds, provides an effective description of how true wind speed affects pitch angles. This approach makes control strategies more intuitive and efficient in complex wind speed environments. The proposed independent pitch control method was validated through simulations on the IEA 15MW wind turbine, demonstrating its effectiveness and performance. Experimental results indicate that the equivalent wind speed model-based independent pitch control method significantly reduces structural loads, vibrations in blades and tower, and 1P oscillations in root bending moments while maintaining stable power output. The research findings offer valuable insights for load reduction and vibration suppression control in offshore floating wind turbines. Physical sciences/Engineering Physical sciences/Energy science and technology/Renewable energy Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 07 Jan, 2025 Read the published version in Scientific Reports → Version 1 posted Editorial decision: Revision requested 11 Oct, 2024 Reviews received at journal 24 Sep, 2024 Reviewers agreed at journal 22 Sep, 2024 Reviews received at journal 27 Aug, 2024 Reviewers agreed at journal 22 Aug, 2024 Reviewers invited by journal 22 Aug, 2024 Editor assigned by journal 22 Aug, 2024 Editor invited by journal 20 Aug, 2024 Submission checks completed at journal 20 Aug, 2024 First submitted to journal 19 Aug, 2024 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-4941718","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":345974976,"identity":"12e4ca22-4bf9-43af-a300-dc2a54b485a9","order_by":0,"name":"Dongxiao Bai","email":"","orcid":"","institution":"Hohai University","correspondingAuthor":false,"prefix":"","firstName":"Dongxiao","middleName":"","lastName":"Bai","suffix":""},{"id":345974977,"identity":"150a1653-a17d-45f6-98c5-2fb855300ac9","order_by":1,"name":"Bing Wang","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA9klEQVRIiWNgGAWjYBACNgYGZoYEBgYDIIPxMWMDSCyBeC3MxkRpYQBpAQIDkHZporTwsR8+bPBwR60xn3T7terCHYcZ+NlzDBh+7sDjMJ605ITEM8fN2GTOlN2eeeYwg2TPGwPG3jN4tEjwGB9IbDtmwyaRk3abt+0wg8GNHANmxjZ8Wvg/w7UUg7TYE9bCw5yQ2FZjxiaRfowZbIsEIS08acYGiW0HjIG2MEvztqXzSJx5VnCwF48W+fbDjyV/ttUZzp+R/vAzb5u1HH978sYHP/FogYLDQMwDihsGHhBxgKAGBoY6IGZ/QITCUTAKRsEoGIkAAJD0SoKV1UTyAAAAAElFTkSuQmCC","orcid":"","institution":"Hohai University","correspondingAuthor":true,"prefix":"","firstName":"Bing","middleName":"","lastName":"Wang","suffix":""},{"id":345974978,"identity":"f681816d-9476-46da-8ec6-d3ce33d2ce84","order_by":2,"name":"Yinsheng Li","email":"","orcid":"","institution":"Hohai University","correspondingAuthor":false,"prefix":"","firstName":"Yinsheng","middleName":"","lastName":"Li","suffix":""},{"id":345974981,"identity":"fae814f8-b23c-439f-96d4-69ae8fd6046f","order_by":3,"name":"Wancheng Wang","email":"","orcid":"","institution":"Hohai University","correspondingAuthor":false,"prefix":"","firstName":"Wancheng","middleName":"","lastName":"Wang","suffix":""}],"badges":[],"createdAt":"2024-08-20 03:27:10","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4941718/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4941718/v1","draftVersion":[],"editorialEvents":[{"content":"https://doi.org/10.1038/s41598-025-85476-3","type":"published","date":"2025-01-07T15:57:35+00:00"}],"editorialNote":"","failedWorkflow":false,"files":[{"id":73694742,"identity":"fd54cefa-2f66-4ae7-86f8-f45d743d7ef2","added_by":"auto","created_at":"2025-01-13 16:13:51","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1124294,"visible":true,"origin":"","legend":"","description":"","filename":"StudyonLoadReductionandVibrationControlStrategiesforSemiSubmersibleOffshoreWindTurbines.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4941718/v1_covered_f792a555-44b8-4782-83ad-9f48281b3f87.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Study on Load Reduction and Vibration Control Strategies for Semi-Submersible Offshore Wind Turbines","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":true,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"scientific-reports","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"scirep","sideBox":"Learn more about [Scientific Reports](http://www.nature.com/srep/)","snPcode":"","submissionUrl":"","title":"Scientific Reports","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Scientific Reports","inReviewEnabled":true,"inReviewRevisionsEnabled":true},"keywords":"","lastPublishedDoi":"10.21203/rs.3.rs-4941718/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4941718/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eIndependent pitch control is a crucial technology for enhancing the performance of wind turbines by effectively managing each blade to optimize power output and reduce loads. This paper explores the primary vibration modes of semi-submersible wind turbines under wind-wave coupling. Given the effectiveness of pitch control in vibration suppression, the study addresses the limitations of conventional unified pitch control. It proposes an independent pitch control method based on an equivalent wind speed model. This model simplifies the analysis of wind speed effects on blade angle adjustments, thus improving control accuracy and response speed. The equivalent wind speed model, which integrates the spatial distribution of actual wind speeds, provides an effective description of how true wind speed affects pitch angles. This approach makes control strategies more intuitive and efficient in complex wind speed environments. The proposed independent pitch control method was validated through simulations on the IEA 15MW wind turbine, demonstrating its effectiveness and performance. 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