Pretvarači obnovljivih izvora energije u elektroenergetskom sustavu

master's thesis

• Title (english): Renewable energy sources inverters in power system
• Author: Haris Mehulić
• Mentor: Juraj Havelka (mentor)
• Committee member: Juraj Havelka (predsjednik povjerenstva)
• Committee member: Nenad Debrecin (član povjerenstva)
• Committee member: Ivan Rajšl (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2019-07-19, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

U ovom radu je opisan rad elektroenergetskih pretvarača te njihova primjena u obnovljivim izvorima i motorima. Glavna funkcija pretvarača je da korištenjem određenih elektroničkih elemenata pretvaraju određene fizikalne veličine ovisno o potrebi. Nezamjenjivi su dio pretvorbe energije kod obnovljivih izvora zbog karakteristika vjetroagregata i solarnih ćelija. Dolazi do sve veće potrebe za razvitkom što efikasnijih i prilagodljivih pretvarača zbog velike neefikasnosti obnovljivih izvora. Osim kod direktne pretvorbe kod obnovljivih izvora čine veliku uogu u kontroli radne i jalove snage kod motora promjenjive brzine i frekvencije koji se u konačnici i koriste kod vjetroagregata, što je od velike važnosti upravo zbog manja konstantnog priljeva energije u sustav.

Abstract (english)

This thesis describes working mode of power converters and their applications in renewable energy systems and motors. Main function of a power converter is that using different electronic elements converts various physical properties depending on its utility. Power converters are irreplaceable in renewable energy systems because of the wind turbine and solar systems characteristics. Because of the small efficiency of renewable sources there has been a great demand in finding better and more efficient ways of making power converters. Besides direct transformation in renewable sources, power converters have a major role in controlling active and reactive power in variable speed constant frequency systems that ultimately uses in wind turbines, what is of great significance because of the lack of constant energy flow.

• Keywords: pretvarači; obnovljivi izvori
• Keywords (english): power converters; renewable sources
• Language: croatian
• URN:NBN: urn:nbn:hr:168:401407
• 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: 2020-01-07 20:18:02