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کاهش ارتعاشات خارج از صفحه پره توربین بادی به کمک چاه غیرخطی انرژی پربازده | ||
| نشریه مهندسی مکانیک امیرکبیر | ||
| مقاله 14، دوره 53، شماره 12، اسفند 1400، صفحه 5851-5866 اصل مقاله (2.6 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22060/mej.2021.19784.7111 | ||
| نویسندگان | ||
| مازیار دقیقی1؛ علی رحمانی هنزکی* 2؛ مجید شاهقلی3؛ سعید باب4 | ||
| 1گروه طراحی جامدات، دانشکده مهندسی مکانیک، دانشگاه تربیت دبیر شهید رجایی | ||
| 2دانشگاه تربیت دبیر شهید رجایی*مهندسی مکانیک | ||
| 3گروه طراحی جامدات-دانشکده مهندسی مکانیک-دانشگاه تربیت دبیر شهید رجایی-تهران- ایران | ||
| 4گروه تجهیزات دوار مکانیکی، پژوهشگاه نیرو، تهران، ایران | ||
| چکیده | ||
| امروزه استفاده از باد به عنوان یکی از اصلیترین منابع انرژی پاک در سرتاسر جهان به سرعت گسترش یافته است. اخیراً، با توسعه نیروگاههای بادی و به تبع آن بزرگتر شدن اندازه توربینهای بادی، نیروی باد وارده بر آنها بسیار افزایش یافته و در نتیجه تعمیر و نگهداری آنها نیز دشوارتر و پرهزینهتر گردیده و به همین دلیل توجه محققان به تجزیه و تحلیل ارتعاشات و مهار آن جلب گردیده است. در این تحقیق یک پره توربین بادی با نوعی جاذب غیرخطی به نام چاه غیرخطی انرژی پربازده مدل شده که در آن تعامل بین پره سنگین و بلند، و جاذب تحت تأثیر نیروی جاذبه در صفحه عمودی و همچنین نیروی باد که به دلیل ویژگی وابستگی به ارتفاع به صورت دورهای تغییر میکند، بررسی شده است. بدین منظور، معادلات حرکت پره متصل به چاه غیرخطی انرژی با استفاده از روش انرژی استخراج شده و به صورت عددی حل شده است. سپس به تحلیل حساسیت پارامترهای مؤثر در عملکرد چاه غیر خطی انرژی پرداخته شده و برای جاذب بهینه، رفتار سیستم در شرایط دوران پره به تنهایی و دوران پره با وجود جاذب متصل به آن، بررسی شده است. | ||
| کلیدواژهها | ||
| توربین بادی؛ ارتعاشات مکانیکی پره؛ روش انرژیی؛ تحلیل حساسیت؛ چاه غیر خطی انرژی | ||
| عنوان مقاله [English] | ||
| Out-of-Plane Vibration Mitigation of Wind Turbine Blade Using Highly Efficient Nonlinear Energy Sink | ||
| نویسندگان [English] | ||
| Maziyar Daghighi1؛ Ali Rahmani Hanzaki2؛ Majid Shahgholi3؛ Saeed Bab4 | ||
| 1School of Mechanical Engineering, Shahid Rajaee teacher training Uni. | ||
| 2Faculty member with Mechanical engineering faculty, Shahid Rajaeeteacher training Uni. | ||
| 3School of Mechanical Engineering-Shahid Rajaee teacher training Uni. Tehran-Iran | ||
| 4Niroo Research Institute,-Tehran-Iran | ||
| چکیده [English] | ||
| Nowadays, the use of wind as one of the main sources of low carbon and renewable energy is expanding rapidly all around the world. Recently, with the development of wind farms and the increase in the size of wind turbines, the wind loads on them have increased, and as a result, they have become more difficult and expensive to maintain. Therefore, researchers have deeply focused on the analysis and the control of their vibration. In this study, a wind turbine blade with a type of nonlinear absorber, called highly efficient nonlinear energy sink is analyzed, furthermore the interaction between the heavy and long blade and the nonlinear energy sink, under the influence of gravity in the vertical plane and time-dependent wind force, which is due to its height dependency is examined. For this purpose, the equations of motion of the system are obtained by the energy method and solved numerically. The blade- nonlinear energy sink system behavior is compared to that of the blade and linear absorber system. Also, the sensitivity of the parameters affecting the performance of the nonlinear energy sink is analyzed and the vibration of the system with optimized nonlinear energy sink is compared with the alone blade and the blade with the optimal linear absorber behaviors. | ||
| کلیدواژهها [English] | ||
| Wind turbine, Mechanical vibration of blade, Energy method, Sensitivity analysis, Nonlinear energy sink | ||
| مراجع | ||
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