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Frequencies identification of NREL 5MW ITI Barge Wind Turbine: first approach
| Instrumentation Viewpoint
In this work we present a process to identify the main frequencies that affects a floating offshores wind turbine (FOWT), specifically, the NREL 5MW ITI Barge Wind Turbine. This floating platform is highly affected by surge and sway translational movements due to the strong winds and mainly the waver it is subjected to. However, one of the most important modes is the 1st tower fore-aft bending mode, whose frequency has the same value than the forced 3P component, provoking these frequencies to be highly excited. In this work this effect is observed in the power spectrum of the tower top acceleration signal along the nacelle “x” axis.
All papers presented at Martech will be published in both the UPCommons and the Martech organization web sites, the former being the institutional digital deposit of Universitat Politècnica de Catalunya (https://upcommons.upc.edu). This difussion will be made through the Creative Commons License Attribution-NonCommercial-NoDerivs 2.5 or similar (http://creativecommons.org/licenses/by-nc-nd/2.5/deed.en).
When sending the final paper, the author must agree to the conference having non-exclusive rights on this operation. The author will maintain his/her right to diffuse the paper elsewhere.
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Fatal error: Uncaught TypeError: flock(): Argument #1 ($stream) must be of type resource, false given in /var/www/ojs/lib/pkp/classes/observers/listeners/LogUsageEvent.php:105
Stack trace:
#0 /var/www/ojs/lib/pkp/classes/observers/listeners/LogUsageEvent.php(105): flock(false, 2)
#1 /var/www/ojs/lib/pkp/classes/observers/listeners/LogUsageEvent.php(53): PKP\observers\listeners\LogUsageEvent->logUsageEvent('{"time":"2026-0...')
#2 /var/www/ojs/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Events/Dispatcher.php(512): PKP\observers\listeners\LogUsageEvent->handle(Object(APP\observers\events\UsageEvent))
#3 /var/www/ojs/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Events/Dispatcher.php(319): Illuminate\Events\Dispatcher->Illuminate\Events\{closure}('APP\\observers\\e...', Array)
#4 /var/www/ojs/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Events/Dispatcher.php(299): Illuminate\Events\Dispatcher->invokeListeners('APP\\observers\\e...', Array, false)
#5 /var/www/ojs/lib/pkp/lib/vendor/laravel/framework/src/Illuminate/Foundation/helpers.php(505): Illuminate\Events\Dispatcher->dispatch(Object(APP\observers\events\UsageEvent))
#6 /var/www/ojs/pages/article/ArticleHandler.php(366): event(Object(APP\observers\events\UsageEvent))
#7 [internal function]: APP\pages\article\ArticleHandler->view(Array, Object(APP\core\Request))
#8 /var/www/ojs/lib/pkp/classes/core/PKPRouter.php(327): call_user_func(Array, Array, Object(APP\core\Request))
#9 /var/www/ojs/lib/pkp/classes/core/PKPPageRouter.php(249): PKP\core\PKPRouter->_authorizeInitializeAndCallRequest(Array, Object(APP\core\Request), Array, false)
#10 /var/www/ojs/lib/pkp/classes/core/Dispatcher.php(157): PKP\core\PKPPageRouter->route(Object(APP\core\Request))
#11 /var/www/ojs/lib/pkp/classes/core/PKPApplication.php(429): PKP\core\Dispatcher->dispatch(Object(APP\core\Request))
#12 /var/www/ojs/index.php(21): PKP\core\PKPApplication->execute()
#13 {main}
thrown in /var/www/ojs/lib/pkp/classes/observers/listeners/LogUsageEvent.php on line 105