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Solsimulation med LED – Konstruktion och utvärdering av ensolsimulator baserad på lysdioder
University of Borås, Faculty of Textiles, Engineering and Business.
2019 (Swedish)Independent thesis Basic level (university diploma), 180 HE creditsStudent thesisAlternative title
Solar simulation with LED – Construction and evaluation of a solarsimulator based on light emitting diodes (English)
Abstract [sv]

Ett behov av en enklare och mer portabel solsimulator gav iden om en egenkonstruerad solsimulator baserad på lysdioder istället för den vanligaste typen av ljuskälla, Xenon. Hur en LED-solsimulator bör konstrueras studerades och som ledning användes den rådande standarden för prestandautvärdering av solsimulatorer, IEC 60904–9. Standarden gav kraven om solsimulatorns spektralfördelning och största tillåtna olikformighet. Med mätningar och beräkningar på LED-baserad belysning, dimensionerades utifrån detta en solsimulator efter kraven med hjälp av beräkningsprogrammet ReluxDesktop. Nödvändiga komponenter och material införskaffades och monterades ihop till en fungerade solsimulator med bristfällig spektralfördelning. Total kostnad för projektet understiger tio tusen kronor. Solsimulatorn testas och mätningar görs på fem solcellsmoduler som även testades i en befintliga kommersiell solsimulator samt under solljus i fält. Resulterande IV-kurvor och datajämfördes för att uppskatta eventuella avvikelser. Solsimulatorns spektralfördelning når ingen klassificering enligt IEC 60904–9 men når klass Ci olikformighet. Solsimulatorn lyckas producera IV-kurvor som delvis efterliknar motsvarandemer sanna mätningar. En stor avvikelse upptäcktes och grundades troligen på en ofullständig spektralfördelning samt en för låg nivå av irradians/strålningsflöde. Framtida kompletterande additioner av lysdiodstyper bör lösa stora delar av avvikelsen. Det går att konstruera en relativt billig solsimulator som godkänt kan klassificeras med IEC60904–9 även om detta arbete inte lyckades med att färdigställa en fullständigt klassificerad solsimulator.

Abstract [en]

The need for a simpler and more portable solar simulator, spawned the idea of constructing asimulator based on LED lighting instead of the usual xenon lights. A study of the proper methodto produce a LED-simulator was made and found use of the current standard, IEC 60904-9, asa guiding document.Requirements for the solar simulator´s spectral distribution and uniformity of irradiation we reacquired from the international standard. Measurements and tests of LED-based lights were used to calculate the dimensions and attributes of the LED-simulator with the aid of lighting calculating computer program ReluxDesktop. Necessary components and materials we reacquired and assembled into a working solar simulator lacking a full spectral distribution. The total cost of the current project nearly reached ten thousand SEK. The solar simulator was tested, and measurements were taken of five solar cell modules. These modules were also measured in a commercial solar simulator and exposed to actual sunlight. Results in the form of IV-diagrams and output data was compared to evaluate an eventual error. The resulting spectral distribution of the solar simulator did not reach the criterium of any classification according to the standard from IEC. The solar simulator did reach a classification of C in the category of uniformity of irradiation. The simulator produces IV-diagrams whichnearly emulates truer results to a lower level. A large error was detected and it´s source is probably a combination of the incomplete spectral distribution and the low levels of irradiation. Future additions of more different types of LED-lights should counteract a large part of the current error. It is possible to construct a relatively cheap solar simulator with the use of LED that preform sadequately for a classification according to the IEC 60904-9 standard. Even though the work of this rapport were unable to produce a fully classified solar simulator, future additions will be able to rectify it.

Place, publisher, year, edition, pages
2019.
Keywords [sv]
Solcell, solsimulator, irradians, ljusdiod, LED, IEC 60904–9, solljus, solcellsmodul, kisel, förnyelsebar, energi, el, spektralfördelning
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:hb:diva-23195OAI: oai:DiVA.org:hb-23195DiVA, id: diva2:1430005
Subject / course
Energiteknik
Supervisors
Examiners
Available from: 2020-05-20 Created: 2020-05-13 Last updated: 2020-05-20Bibliographically approved

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