National Repository of Grey Literature 140 records found  beginprevious21 - 30nextend  jump to record: Search took 0.01 seconds. 
Design of wind turbine regulator
Kowalczyk, Wiktor ; Vrána, Michal (referee) ; Morávek, Jan (advisor)
The bachelor thesis deals with charge control of a lead acid battery driven by 300 W wind turbine. The thesis is divided into four parts. First deals with the issue of lead battery charge controllers and the definition of a regulator for a wind turbine with permanent magnet synchronous generator, including a description of the regulated system elements. The second part deals with measurments done on the given system. Third part describes the design, algorithms and regulator programming and the last part describes construction and testing of a built-in controller.
Electrical installation of family house - implementing documentation
Hájek, Karel ; Morávek, Jan (referee) ; Mastný, Petr (advisor)
Main goals of this bechelor´s thesis are devided into three parts. First part introduces reader with power and data instalations issues including legislation necessary for project creation in electrickal engineering, object connection to distribution network, basic electric wiring including circuit breakers and electric wiring design in residential buildings, which mainly speaks about ways of installation of electric wiring and elektrical zones. In addition internal and external lighting protection and basic information about switchgear. Second part defines of project documentation creation, both design and text part. The last part is the practical part that looks into complete electrical installation of family house project, which contains marking both low-power and high-power circuits into plan view, house switchgear and electro meter scheme, LPS design and technical report with economical evaluation.
Identification and detection of defects on the PV system - operational measurement
Leitman, Valentín ; Morávek, Jan (referee) ; Mastný, Petr (advisor)
This work deals with the problem of identifying and detecting faults in photovoltaic systems. This thesis includes theoretical knowledge related to photovoltaic panels, the definition of measured parameters of the PV system and five ways how to identify faults in PV systems. The last part of this bachelor thesis deals with the author's contribution, which is to introduce a system for continuous monitoring data. System for continuous monitoring of data consists of measuring the power output of a photovoltaic panel and measurement using optical diagnostics using thermal camera. In conclusion are summarized individual knowledge, evaluation and recommendation of appropriate measurement methods for the detection of faults in PV systems.
Project of wiring system with intelligent elements for family house
Lengyel, Ladislav ; Morávek, Jan (referee) ; Mastný, Petr (advisor)
The goal of this bachelor work was first of all the theoretical introducing to the project documentation and to the question of intelligent electrical installation. The first part of the bachelor work consists of terms and definitions of principles for creating the project documentation of electrical installation. With the view of the pages’ limitedness, it is not possible to describe in detail all the terms principles and standards used in creating of electrical installation. Because of that, the work focuses on the heavy current part of the technical documentation only. The next part of the work is focused on the question of intelligent electrical installation, its division and applicable possibilities in family houses. The advantages of the system installation in comparison to classical. In this part are further analyzed and described the different systems of different manufacturers of intelligent electrical installations. The closing part focuses on the blueprint of the project documentation of heavy current distributions. The distributions of the electrical installation for the family houses are realized with the help of intelligent elements from ABB company of the KNX system. This part furthermore focuses on the proper selection of system installation, placing of the distributions and elements of installations, inclusive of components of intelligent installation and a blueprint of subsidiary apartment distributer. Then it deals with the calculation of heat loss of the object and the selection of proper head pump related to it. With the help of determined power take-off the main breaker used in the apartment distributing board is appointed and the conjunction of the main residence wiring related to it.
Implementation of control algorithm in application with several accumulation systems
Klusáček, Jan ; Morávek, Jan (referee) ; Collin, Adam (referee) ; Vrána, Michal (advisor)
Rozptýlená výroba elektrické energie využívající obnovitelné zdroje, jako je sluneční energie, přispívá ke snížení emisí skleníkových plynů. Z hlediska provozu distribuční soustavy je také výhodné, aby energie byla primárně spotřebována v místě výroby. To je částečně možné přizpůsobením spotřeby, ale především využitím akumulačních systémů. V této práci je představen hybridní systém složený z fotovoltaické elektrárny, akumulátoru elektrické energie a akumulátoru tepelné energie. Výběr a parametry všech částí hybridního systému jsou popsány v práci. Akumulátor elektrické energie je navržen a sestaven z LiNiMnCoO2 článků a řídícího systému zajišťujícího bezpečný provoz. Řídicí systém akumulátoru (BMS) zajistí odpojení baterie, pokud je překročen některý z provozních parametrů baterie. Návrh baterie i sestavy je popsán v práci. Akumulátor tepelné energie sestává z výkonového spínače a nádrže na teplou vodu s topnou patronou pro odporový ohřev vody. Na základě rešerše komerčně používaných zařízení pro regulaci příkonu byly definovány jejich nedostatky a na základě nich bylo navrženo optimální řešení. Řešení spočívá v použití komerčního polovodičového spínacího prvku. Pro tento výkonový spínací prvek byla vytvořena zpětnovazební řídící smyčka s regulátorem výkonu, který byl implementován v prostředí softwaru LabVIEW. V práci je také uveden postup návrhu chladiče spínacího prvku a LCL filtru, který je klíčový pro splnění požadavků elektromagnetické kompatibility. V druhé části práce je popsán návrh nadřazeného řídícího algoritmu, jehož úkolem je řídit výkonové toky v hybridním systému tak, aby byly splněny požadavky definované jak uživatelem, tak i okamžitým stavem akumulátorů. Algoritmus byl implementován v prostředí LabVIEW. Funkčnost celého systému byla ověřena měřením v laboratorních podmínkách. Z výsledků plyne, že nadřazený řídící algoritmus funguje správně. Řídící smyčka tepelného akumulátoru je stabilní a reguluje zátěž na požadovanou hodnotu. Přidanou hodnotou je kratší reakční doba na změnu toku výkonu oproti hybridnímu měniči a díky tomu dochází k minimalizaci přetoků elektrické energie do distribuční sítě. Na práci je možné navázat rozšířením stávajícího algoritmu o možnost řízení/ovládání více typů akumulačních jednotek a generátorů nebo implementováním odlišných strategií řízení.
Design of electric control small dispersed sources on the basis PLC
Morávek, Jan ; Macháček, Jan (referee) ; Radil, Lukáš (advisor)
This thesis summarizes the basic theoretical knowledge on the problems of controlling the small hydro power plants. Briefly lists the basic requirements for the control system and provides an overview of the available automation systems. The main part of the thesis describes the requirements for the control system and its specific design based on the Unitronics PLC.
Design of modular accumulation system
Janek, Ondřej ; Klusáček, Jan (referee) ; Morávek, Jan (advisor)
The bachelor's thesis deals with the theoretical introduction to batteries and the design of a modular storage system. The first three parts focus on the theory, which discusses basic concepts such as electricity accumulators, the distribution of lithium cells with a focus on the most important LiFePO cells and a description of the safety system. The second part deals with the specific design of the system. That is, the design of the electrical diagram, the choice of cell and switchboard or the calculation of the total budget.
Digital Audio Steganography
Morávek, Jan ; Šimek, Václav (referee) ; Strnadel, Josef (advisor)
Nowadays much more information is transfered and saved in electronic files. The digitalization allows easier access to information, not only for the user, but also for a possible attacker. This fact leads to progress in information security area. Besides cryptography, this also includes steganography. This thesis is focused on steganography in general and describes digital audio steganography in detail. Implementation and evaluation of several methods are also parts of this thesis.
Design of the experimental PV tracker
Černý, Martin ; Baxant, Petr (referee) ; Morávek, Jan (advisor)
The aim of this thesis is to design, show plans and build two devices for positioning the solar panel. The output of the work is a technical documentation with a list and procedure of assembly. The thesis also includes economic cost evaluation.
Project of 250 kWp PV power plant with energy accumulation system
Kovaľ, Nikodém ; Mastný, Petr (referee) ; Morávek, Jan (advisor)
This thesis is divided into three parts. The first part is focused on getting familiarization with the current requirements for connecting power plants to networks, their dispatch management and options for the construction of photovoltaic systems. The second part is focused on the design of a photovoltaic system with an output power of 250 kWp, including electricity storage. The last part is focused on the creation of implementation project documentation of FVS with battery storage system, which includes technical report, situation drawings, single-pole system diagram, diagrams of AC and DC switchboards, roof drawings, drawings of low-voltage and communication lines and budget.

National Repository of Grey Literature : 140 records found   beginprevious21 - 30nextend  jump to record:
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