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Arc Fault Detection
Fendrychová, Michaela ; Chumak,, Oleksiy (referee) ; Orságová, Jaroslava (advisor)
Diplomová práce je zaměřena na problematiku analýzy signálů za účelem detekce poruchového oblouku, přičemž analýza signálů je prováděna v časové, frekvenční a smíšené časově-frekvenční oblasti. Práce stručně shrnuje existující normy pro zařízení pro detekci poruchového oblouku. Práce dokumentuje testy a měření, které byly realizovány v souladu s normami IEC 62606:2013 a UL 1699B. Z důvodu nedostatečnosti stávajících norem je v práci popsána nová metoda iniciace poruchového oblouku. naměřená data byla analyzována s využitím rychlé Fourierovy transformace, krátkodobé Fourierovy transformace a vlnkové transformace. Na základě provedeného literárního průzkumu a s využitím výsledků provedených analýz signálu je v práci proveden návrh nové detekční metody pro účely detekce poruchového oblouku v systémech napájených střídavým i stejnosměrným napětím.
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Current Status of Nuclear Fuel Assemblies Inspections at Nuclear Power Plants World-Wide
Fendrychová, Michaela ; Temelín, Elektrárna (referee) ; Katovský, Karel (advisor)
This bachelor thesis deals with post irradiation examination (PIE) of spent nuclear fuel. The document briefly introduces basic light water reactor types (BWR, PWR, VVER) and construction of nuclear fuel for these reactors. Typical fuel failure types are described as well as methods for detection of such defects or failures. Consequently inspection methods suitable for commercial nuclear power plants are described. The primary goal of this thesis was to analyze existing inspection methods and to propose improvement of existing PIE at Temelín nuclear power plant. Therefore part of this thesis is devoted to description of fuel used at Temelín power plant, inspection methods currently applied at Temelín power plant and discussion of possible improvements of PIE.
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"When survive was victory". Contribution to the History of the Phenomenon of Formula 1 in the years 1970-1994
Fendrychová, Michaela ; Koura, Jan (advisor) ; Kovář, Martin (referee)
Résumé This thesis is focused on the Czech environment neglected history of sport, specific sporty branch - races F1. Thesis is concentrated on the years 1970-1994 because there are two important milestones in the history of F1 racing - the title of world champion in memoriam of Jochen Rindt 1970 and death of Ayrton Senna at Grand Prix San Marino at Imola 1994. Thesis will be looking the answer to the questions why this sport gained in researching period rising popularity, what was F1 social and economic relevance, how did formula 1 help to the further technological development of automotive, why it began to professionalize, what reasons and in which countries began F1 expand. Individual world champions will not miss out, especially Niki Lauda, James Hunt, Alain Prost and Ayrton Senna and other important personalities at whose fates will be the history of F1 in researching period also watch.
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"When survive was victory". Contribution to the History of the Phenomenon of Formula 1 in the years 1970-1994
Fendrychová, Michaela ; Koura, Jan (advisor) ; Kovář, Martin (referee)
Résumé This thesis is focused on the Czech environment neglected history of sport, specific sporty branch - races F1. Thesis is concentrated on the years 1970-1994 because there are two important milestones in the history of F1 racing - the title of world champion in memoriam of Jochen Rindt 1970 and death of Ayrton Senna at Grand Prix San Marino at Imola 1994. Thesis will be looking the answer to the questions why this sport gained in researching period rising popularity, what was F1 social and economic relevance, how did formula 1 help to the further technological development of automotive, why it began to professionalize, what reasons and in which countries began F1 expand. Individual world champions will not miss out, especially Niki Lauda, James Hunt, Alain Prost and Ayrton Senna and other important personalities at whose fates will be the history of F1 in researching period also watch.
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Formula 1 as a Sport and Social Phenomenon in the 1950s and 1960s
Fendrychová, Michaela ; Kovář, Martin (advisor) ; Soukup, Jaromír (referee)
Bachelor thesis is focused on analysis of races formula 1 as a Sport and Social Phenomenon in the 1950s and 1960s. The author focused in the introduction on recapitulation beginning car races from 1894. The main part of thesis regards world championship in Fifties and Sixties. The author analysed particular seasons of the championship and concentrated on career of the best drivers - champions (for example Guiseppe Farina, Juan Manuel Fangio, Albert Ascari etcetera) as well as drivers, who didn't win world title (for example Stirling Moss) or Jochen Rindt (he got world title in memoriam, but in 1970 and this is not observed period). Analysis of running the most important teams follows (Alfa Romeo, Ferrari, Maserati, Mercedes, Lotus and McLaren).
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Current Status of Nuclear Fuel Assemblies Inspections at Nuclear Power Plants World-Wide
Fendrychová, Michaela ; Temelín, Elektrárna (referee) ; Katovský, Karel (advisor)
This bachelor thesis deals with post irradiation examination (PIE) of spent nuclear fuel. The document briefly introduces basic light water reactor types (BWR, PWR, VVER) and construction of nuclear fuel for these reactors. Typical fuel failure types are described as well as methods for detection of such defects or failures. Consequently inspection methods suitable for commercial nuclear power plants are described. The primary goal of this thesis was to analyze existing inspection methods and to propose improvement of existing PIE at Temelín nuclear power plant. Therefore part of this thesis is devoted to description of fuel used at Temelín power plant, inspection methods currently applied at Temelín power plant and discussion of possible improvements of PIE.
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Arc Fault Detection
Fendrychová, Michaela ; Chumak,, Oleksiy (referee) ; Orságová, Jaroslava (advisor)
Diplomová práce je zaměřena na problematiku analýzy signálů za účelem detekce poruchového oblouku, přičemž analýza signálů je prováděna v časové, frekvenční a smíšené časově-frekvenční oblasti. Práce stručně shrnuje existující normy pro zařízení pro detekci poruchového oblouku. Práce dokumentuje testy a měření, které byly realizovány v souladu s normami IEC 62606:2013 a UL 1699B. Z důvodu nedostatečnosti stávajících norem je v práci popsána nová metoda iniciace poruchového oblouku. naměřená data byla analyzována s využitím rychlé Fourierovy transformace, krátkodobé Fourierovy transformace a vlnkové transformace. Na základě provedeného literárního průzkumu a s využitím výsledků provedených analýz signálu je v práci proveden návrh nové detekční metody pro účely detekce poruchového oblouku v systémech napájených střídavým i stejnosměrným napětím.
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