Optimalno pozicioniranje aktivne plohe fotonaponskog panela u svim vremenskim uvjetima

master's thesis

• Title (english): Optimal Positioning of the Photovoltaic Panel Active Surface in all Weather Conditions
• Author: Valentina Mehkek
• Mentor: Mario Vašak (mentor)
• Committee member: Mario Vašak (predsjednik povjerenstva)
• Committee member: Željko Ban (član povjerenstva)
• Committee member: Mato Baotić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2014-07-11, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Postoje mnogi oblici obnovljivih izvora energije. Većina tih izvora ovisi o suncu. Sustavima za praćenje sunca možemo direktno utjecati na ukupnu sunčevu dozračenost, koja u obliku direktne i difuzne komponente pada na fotonaponsko polje. Optimalne trajektorije za nagnutost i okrenutost panela, a samim time i orijentacija panela prvenstveno ovise o sunčevoj dozračenosti. Dodatno poboljšanje sustava ostvarivo je korištenjem dvoosnih sustava pozicioniranja, kod kojih je panel okrenut prema suncu i povećava proizvodnju za 20-30% u odnosu na fiksno postavljena fotonaponska polja. Cilj ovog rada je razviti i provjeriti optimalno pozicioniranje aktivne plohe fotonaponskog polja s ciljem maksimizacije upadne sunčeve dozračenosti. Rezultati su pokazali da tijekom vedrog vremena fotonaponsko polje prati sunce, a tijekom oblačnog vremena se pozicionira u horizontalu. Predstavljeni rezultati provjereni su simulacijski te je na uzorku od 21 dan provedenih mjerenja sunčeve dozračenosti dizajnirani algoritam uspoređen s praćenjem sunca u otvorenoj petlji. Utvrđeno je povećanje netto proizvodnje u iznosu većem od 4 % upotrebom novo dizajniranog algoritma u odnosu na praćenje sunca.

Abstract (english)

There are many forms of renewable energy. Most of these renewable energies depend on sunlight. The total solar radiation that reaches the surface of the photovoltaic panel in the form of direct and diffuse radiation, can be influenced by a proper control of the sun--tracking system. The optimal trajectories for the tilt and azimuth angle and therefore orientation of the panel depend on the available solar radiation. Further improvement of the system is achievable by using dual-axis tracking in which solar module is pointed at the sun and improves the overall capture of solar energy by 20-30 % versus modules with a fixed tilt. The aim of this thesis is to develop and verify optimal positioning of the active surface of the photovoltaic array in order to maximize its incident solar irradiance. The results showed that during cloud-free periods a solar array would track the sun, but go to horizontal configuration when the sky becomes overcast. Presented results are verified by simulations. The algorithm derived within this thesis is compared with the sun tracking in an open loop on samples of 21 days conducted measurements. An increase in net production of more than 4 % is obtained using the newly designed algorithm in relation to the sun tracking.

• Keywords: Solarni sustavi; Dvoosno pozicioniranje panela; Sunčeva dozračenost; Optimalno pozicioniranje; Maksimizacija dozračenosti; Potrošnja dvoosnog sustava pozicioniranja
• Keywords (english): Solar energy system; Photovoltaic system with dual-axes positioning; Solar radiation; Optimal positioning; Irradiation maximization; Tracking system consumption
• Language: croatian
• URN:NBN: urn:nbn:hr:168:810661
• 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: Closed access
• Created on: 2018-02-06 10:36:33