Dizajn i regulacija vjetroturbina

master's thesis

• Title (english): Design and regulation of wind turbines
• Author: Andrea Baklaić
• Mentor: Siniša Šadek (mentor)
• Committee member: Siniša Šadek (predsjednik povjerenstva)
• Committee member: Krešimir Trontl (član povjerenstva)
• Committee member: Paulina Družijanić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2025-02-27, Croatia

Abstract

Dizajn vjetroturbina je složen proces dimenzioniranja optimalnih parametara vjetroturbine za izabranu lokaciju te kreće od računanja srednje energetske brzine. Proces obuhvaća računanje matematičke aproksimacije sila uzgona i otpora koje djeluju na aerodinimački profil lopatice te indukcijskih faktora koji se javljaju pri strujanju zraka. Odabirom ulaznih parametara određuju se polumjer lopatice vjetroturbine te koeficijent brzohodnosti koji utječu na izbor turbine. Optimalni kut lopatice računa se kako bi se postigla maksimalna učinkovitost pretvorbe energije vjetra u mehaničku energiju rotora. Dizajniranjem lopatice s varijabilnim uvijanjem oko svoje osi, postiže se optimalan kut duž cijelog polumjera. Optimalno dizajniranje lopatice uzrokuje ravnomjernu raspodjelu aerodinamičkih sila, smanjuje opterećenja te poboljšava učinkovitost turbine. Pravilnom regulacijom snage vjetroturbine osigurava se učinkovit i stabilan rad vjetroturbine u svim vremenskim uvjetima.

Abstract (english)

The design of wind turbines is a complex process of sizing the optimal parameters of the wind turbine for a selected location, starting with the calculation of the mean energetic wind speed. The process includes the calculation of the mathematical approximation of lift and drag forces acting on the aerodynamic profile of the blade, as well as the induction factors that arise during airflow. By selecting input parameters, the blade radius of the wind turbine and the tip-speed ratio coefficient, which influence the choice of the turbine, are determined. The optimal blade angle is calculated to achieve maximum efficiency in converting wind energy into mechanical rotor energy. By designing the blade with variable twisting around its axis, an optimal angle is achieved along the entire radius. Optimal blade design ensures an even distribution of aerodynamic forces, reduces loads, and improves turbine efficiency. Proper power regulation of the wind turbine ensures efficient and stable operation of the wind turbine in all weather conditions.

• Keywords: vjetar; vjetroturbine; aeroprofil; optimalni kut; snaga vjetroturbine; regulacija snage
• Keywords (english): wind; wind turbines; airfoil; optimal angle; wind turbine power; power regulation
• Language: croatian
• URN:NBN: urn:nbn:hr:168:664766
• Study programme: Title: Electrical Engineering and Information Technology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka elektrotehnike i informacijske tehnologije (magistar/magistra inženjer/inženjerka elektrotehnike i informacijske tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2025-03-12 11:05:02