|
|
Wind Turbine Model for Research and Laboratory Applications
Števček, Tomáš ; Ptáček, Michal (referee) ; Mastný, Petr (advisor)
A major portion of this thesis is devoted to the Whisper 200 wind turbine model in Matlab-Simulink environment. The turbine is installed at the Department of Electrical Power Engineering, FEEC BUT. In the model, several types of simulations can be executed. On that basis, the power curve and mathematical relationships between wind speed and other physical quantities, such as RPM, electic current, and voltage, were obtained. Comparisons of the simulations' results with measurement data illustrate adequate agreement, but limitations of the model remain significant, as is exhaustively documented and commented upon in the thesis. As a partial advancement towards elimination of the model's deficiencies, conditions for substantial performance improvements of the dynamic simulation have been elaborately derived.
|
|
|
Simulation of small wind power plant with Savonius-Darrieus rotor
Hořava, Pavel ; Radil, Lukáš (referee) ; Ptáček, Michal (advisor)
This master‘s thesis deals with the simulation of small wind power plant with Savonius-Darrieus rotor. On the base of the actuator disk theory the performance of modeled power plant is predicted in theoretical part and the power coefficient as well. The process of designing the wind model is also described in this theoretical part. The practical part of this thesis is dedicated to the creating a model of DS300 vertical axis hybrid wind turbine in Matlab/Simulink. This model was used to generating of the power curve of modeled wind power plant and for the computing of power and total produced energy during an average and above-average day as well. The whole thesis is enclosed by evaluating of obtained results.
|
|
|
Project of Autonomous Heating Source
Pejcl, Jiří ; Ptáček, Michal (referee) ; Radil, Lukáš (advisor)
The diploma thesis deals with design of a suitable heat source for heating and hot water. There are dealt with operational costs of different types of heat sources, which are compared with one another. The next part is the implementation of specific proposal of the heat source - heat pump ground/water with deep wells and measuring system. The last part describes measuring several operating modes of the heat pump.
|
|
|
Measuring system for laboratory generator unit
Pochop, Zbyněk ; Ptáček, Michal (referee) ; Orságová, Jaroslava (advisor)
This Master thesis deals with the measurement and description of the synchronous generator , which is located in laboratories. First, the thesis deals with the theory of synchronous machines. This is followed by a detailed description of the involvement of laboratory genetatory unit. Subsequently, the work deals with the measurement of basic parameters of the synchronous machine and also quite thoroughly devoted to displaying transients at various levels on the digital oscilloscope. The dissertation aims to compare theoretical ideas with the measured results. Finally, it is shown what could be measured next to the generator set.
|
|
| |
|
|
Cogeneration power plant
Ptáček, Martin ; Pospíšil, Jiří (referee) ; Fiedler, Jan (advisor)
This bachelor thesis deals with heat and power supply of the family house, which uses natural gas.The first part reveals cogeneration technology in general, especially cogeneration unit based on gas-engine (internal combustion engine).In the second part, the thesis focuses on energy budget (power-balance sheet) issue. Finally, the third and fourth chapter, deal with particular calculation of usability of cogeneration unit in the small family house. Due to a small final financial difference and large investment costs, with such a low heat and power consumption, this technology is unsuitable for this type of usage.
|
|
|
The analysis of factors of prosperity, the evaluation of current innovations and the suggestion of new innovation illustrated on the example of golf enterprise
Krafková, Jana ; Hartman, Ladislav (advisor) ; Ptáček, Miloslav (referee)
The diploma thesis focuses on the analysis of innovations in golf enterprise illustrated on the case study GOLF & COUNTRY CLUB HODKOVIČKY, a.s. Concretely, I discuss the possibility of implementation of new informational system that would cover a wide range of processes and services, including outsourcing of already solved problems or development of own software. In the theoretical part I describe the conditions for making business, the factors of prosperity of a company and innovations in general, last but not least I pay attention to the utilize of managerial information systems and description of golf environment. The empirical part then analyzes the valuation of the reference company and its processes, describes the innovations in golf environment, compares outsourcing informational systems and proposes own innovation suitable for the company. The aim of the thesis is to create a background for strategic managerial decisions in the field of customer system, compare advantages and disadvantages of proposed changes and recommend the best solution to the owners for realization.
|
|
| |
|
|
Trendy v technologiích vývoje webových aplikací
Kovář, Petr ; Hamerník, Petr (advisor) ; Ptáček, Martin (referee)
Tato písemná práce se zabývá současnými možnostmi vývoje webových aplikací a je souhrnným popisem různých technologií, frameworků webových aplikací a skriptovacích jazyků na straně serveru. V první části práce jsou vysvětleny hlavní vlastnosti jazyka PHP a technologie ASP. Další část je věnována technologiím a frameworkům jako jsou JavaServer Pages, Java Servlety, ASP.NET, Ruby on Rails, PHP frameworky Prado a Zend, Struts a javovský framework JavaServer Faces. Poslední část je o AJAXu, který se stal dnes velmi populárním. Tato práce není tutoriálem či sbírkou příslušných kódů, ale pouze základním popisem v textu zmiňovaných technologií. Hlavním cílem je shrnout dnešní možnosti ve vývoji webových aplikací. Tento cíl byl dosažen studiem oficiálních webových stránek, referenčních manuálů, ukázek kódu, článků a osobní zkušeností. Písemná práce obsahuje slovník pojmů a zkratek.
|
|
|
Měnové opce
Ptáček, Martin ; Málek, Jiří (advisor) ; Witzany, Jiří (referee)
Diplomová práce pojednává o problematice měnových opcí. Zaměřuje se na jejich charakteristiku, vlastnosti a metody oceňování. Dále jsou zde uvedeny některé opční strategie a též i nejdůležitější exotické opce.
|
guest ::
RSS feed.