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undergraduate thesis
Vjetrom uzrokovane vibracije stupa vjetroagregata
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2014. urn:nbn:hr:235:771805
Topličanec, Domagoj
University of Zagreb
Faculty of Mechanical Engineering and Naval Architecture

Institutional repository: Repository of Faculty of Mechanical Engineering and Naval Architecture University of Zagreb

Cite this document

Topličanec, D. (2014). Vjetrom uzrokovane vibracije stupa vjetroagregata (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:235:771805

Topličanec, Domagoj. "Vjetrom uzrokovane vibracije stupa vjetroagregata." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2014. https://urn.nsk.hr/urn:nbn:hr:235:771805

Topličanec, Domagoj. "Vjetrom uzrokovane vibracije stupa vjetroagregata." Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2014. https://urn.nsk.hr/urn:nbn:hr:235:771805

Topličanec, D. (2014). 'Vjetrom uzrokovane vibracije stupa vjetroagregata', Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, accessed 11 July 2024, https://urn.nsk.hr/urn:nbn:hr:235:771805

Topličanec D. Vjetrom uzrokovane vibracije stupa vjetroagregata [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture; 2014 [cited 2024 July 11] Available at: https://urn.nsk.hr/urn:nbn:hr:235:771805

D. Topličanec, "Vjetrom uzrokovane vibracije stupa vjetroagregata", Undergraduate thesis, University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Zagreb, 2014. Available at: https://urn.nsk.hr/urn:nbn:hr:235:771805

Metadata
TitleVjetrom uzrokovane vibracije stupa vjetroagregata
Title (english)Wind induced vibrations of the wind turbine tower
AuthorDomagoj Topličanec
MentorHinko Wolf (mentor)
GranterUniversity of Zagreb
Faculty of Mechanical Engineering and Naval Architecture
Zagreb
Defense date and country2014-09-24, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Mechanical Engineering
Abstract
U radu su navedene vrste vjetroagregata, njihovi dijelovi i problemi koji se javljaju pri njihovom konstruiranju. Opisane su različite vrste stupova i načini njihove izrade. Kratko je objašnjeno opterećenje vjetroagregata. Primjenom metode uplivnih koeficijenata, izrađen je model stupa vjetroagregata, tj. numerički model koji relativno jednostavno, a opet zadovoljavajuće točno izračunava vlastite frekvencije stupa vjetroagregata. Numerička analiza provedena je u programskom paketu MATLAB. Određene su vlastite frekvencije i forme vibriranja stupa za primjer kada su zanemareni masa i momenti inercije gondole i vjetroturbine, kada su zanemareni samo momenti inercije te kada su i masa i momenti inercije uzeti u obzir. Na taj način je utvrđen utjecaj inercijskih karakteristika gondole i vjetroturbine na iznose vlastitih frekvencija stupa vjetroagregata.Opisana je metoda modalne analize za neprigušene i prigušene sustave s*n*stupnjeva slobode gibanja. Računalni program za određivanje vibracijskog odziva stupa vjetroagregata koji se temelji na modalnoj analizi testiran je na jednostavnom fleksijskom sustavu s 2 stupnja slobode gibanja. Zbog nepoznavanja stvarnog opterećenja stupa nije se mogao odrediti realni odziv razmatranog stupa vjetroagregata. Treba naglasiti da ovaj numerički model omogućuje određivanje vibracijskog odziva stupa vjetroagregata na koji djeluje proizvoljna (stohastička) uzbuda.
Abstract (english)
In this thesis types of wind turbines are described, as well as their parts and problems that occur in designing them. Different kinds of wind turbine towers are described including the methods of their design. The load of wind turbine is also briefly discussed. A model of wind turbine tower designed using flexibility coefficient is a numerical model where natural frequencies of the wind turbine tower are analyzed simply yet accurately. The numerical analysis of the vibration model is implemented in a MATLAB software package. Natural frequencies and mode shapes of the tower are determined first excluding mass and moments of inertia of nacelle and hub, then excluding only moments of inertia and last including them both. In that way it was established the influence of inertial characteristics of the nacelle and the hub on natural frequencies of a wind turbine. Modal analysis method for damped and undamped systems with n degrees of freedom is explained. Computer program for determining vibrational response based on modal analysis is tested on a flexural system with two degrees of freedom. Due to not knowing the actual load of the tower it was not possible to determine the real vibrational response of tower but this numerical model, when wind turbine tower is under arbitrary (stochastic) excitation, enables us to do so.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:235:771805
Study programmeTitle: Mechanical Engineering
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2019-05-22 11:24:37