Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Sachin T. Navalkar"'
Autor:
Aemilius A. W. vanVondelen, Alexandros Iliopoulos, Sachin T. Navalkar, Daan C. van derHoek, Jan‐Willem vanWingerden
Publikováno v:
Wind Energy, Vol 26, Iss 9, Pp 923-945 (2023)
Abstract Operational modal analysis (OMA) is an essential tool for understanding the structural dynamics of offshore wind turbines (OWTs). However, the classical OMA algorithms require the excitation of the structure to be stationary white noise, whi
Externí odkaz:
https://doaj.org/article/ed3716e8405045c488533a8611dc8467
Autor:
Mees van Vondelen, Daan van der Hoek, Sachin T. Navalkar, Jan-Willem van Wingerden, Alexandros Iliopoulos
Publikováno v:
Wind Energy Science, Vol 7, Pp 161-184 (2022)
To increase the contribution of offshore wind energy to the global energy mix in an economically sustainable manner, it is required to reduce the costs associated with the production and operation of offshore wind turbines (OWTs). One of the largest
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8b6ea45d2d2e8c5842a4bcc1f06ad29
https://wes.copernicus.org/articles/7/161/2022/
https://wes.copernicus.org/articles/7/161/2022/
Autor:
Sachin T. Navalkar, Håkon Andersen, Bjørn Skaare, Herbjørn Haslum, Nico Maljaars, Mathias Marley
Publikováno v:
Volume 9: Ocean Renewable Energy.
This paper presents an investigation of a newly discovered motion instability phenomenon for floating wind turbines. The instability is due to anti-symmetric coupling terms in roll and yaw caused by the turbine thrust force. For floaters with small s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d1219256fdfba60fb94108367790219
https://doi.org/10.1115/omae2020-18273
https://doi.org/10.1115/omae2020-18273
Publikováno v:
IEEE Transactions on Control Systems Technology. 23:2101-2116
An increasing number of wind turbines implement individual blade pitch control (IPC) to reduce turbine dynamic loading, and thereby, to reduce the capital and operational costs associated with energy production. The aim of this paper is to demonstrat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08d45a7a17ecdaaa6e7dc6786f9e51e9
https://doi.org/10.1109/tcst.2015.2399452
https://doi.org/10.1109/tcst.2015.2399452
Publikováno v:
Wind Energy. 19:607-624
In this paper an extension of the spectrum of applicability of rotors with active aerodynamic devices is presented. Besides the classical purpose of load alleviation, a secondary objective is established: power capture optimization. As a first step,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6b2b8a09754abf8340a7058027bb2ab
https://doi.org/10.1002/we.1853
https://doi.org/10.1002/we.1853
Publikováno v:
IFAC-PapersOnLine. 48:207-212
Modern wind turbines incorporate active control techniques such as Individual Pitch Control (IPC) to reduce lifetime dynamic loads. However, system identification and controller design are typically difficult for turbine load control on account of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8fb8c3aeb790b2d46d7f718ab61d6e9
https://doi.org/10.1016/j.ifacol.2015.11.138
https://doi.org/10.1016/j.ifacol.2015.11.138
Publikováno v:
IFAC-PapersOnLine. 48:121-126
This paper compares four LPV identification methods: local, global, and glocal, for flutter prediction and modeling. Important properties of the methods are highlighted and simulations are performed to compare the performance, using a bending-torsion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::808621107101be9077323d8256cd3165
https://doi.org/10.1016/j.ifacol.2015.11.124
https://doi.org/10.1016/j.ifacol.2015.11.124
Publikováno v:
IFAC-PapersOnLine. 48(28):721-726
Fixed structure controllers are widely used, however the tuning thereof can be cumbersome and gives no guarantee of optimality, especially when the system is Linear Parameter-Varying (LPV). Iterative Feedback Tuning (IFT) is a technique for the optim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3c68554e1cff3d2445f85f80067f5bc
https://doi.org/10.1016/j.ifacol.2015.12.215
https://doi.org/10.1016/j.ifacol.2015.12.215
Publikováno v:
Journal of Aircraft: devoted to aeronautical science and technology, 54(2)
This paper presents the design, a numerical aeroservoelastic investigation, and an experimental proof of concept of an autonomous flap system. Autonomous flaps are load-alleviation devices, intende...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9baa3a7471656159e8a258672efdcc1a
http://resolver.tudelft.nl/uuid:56fd621f-654d-4336-bfa6-3317531a95b3
http://resolver.tudelft.nl/uuid:56fd621f-654d-4336-bfa6-3317531a95b3
Publikováno v:
IEEE Transactions on Control Systems Technology, 26 (May 2018)(3)
Commercial wind turbine blades are progressively becoming longer and more flexible; in order to achieve load reduction, the use of shape modifying devices is currently under research. While such modifications facilitate cost reduction, they also rend
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8c43ec6c43965a5957f9fac678d02ad
http://resolver.tudelft.nl/uuid:7835dc13-da03-495f-b722-dd15d51ae654
http://resolver.tudelft.nl/uuid:7835dc13-da03-495f-b722-dd15d51ae654