|
|
Photovoltaic System Proposal for Commercial Building in Accordance with Applicable Rules for Energy Savings Program
Zeman, Daniel ; Vrána, Michal (referee) ; Mastný, Petr (advisor)
Main purpose of the thesis is to create proposal of the photovoltaic hybrid system for commercial building in accordance with applicable rules for energy savings program. The introductory part of the thesis describes the rules regarding the photovoltaic system parts. The next part of the thesis describes the available technical solution for realization of the photovoltaic system design and the possibilities of electric energy accumulation in these systems and how to deal with power overflows using the power flow controller and what is the negative impacts on the distribution network when switching the connected load. In the next part the design of the PV system is carried out according to the valid assumptions described in the theoretical part of the thesis. Verification of power flow controller and measurement results in UEEN laboratories. The last part of the thesis is an evaluation of the economic part of the proposed system.
|
|
|
PV inverter and hybrid inverter test bench
Sedlačko, Jozef ; Morávek, Jan (referee) ; Vrána, Michal (advisor)
Electricity production from photovoltaic power plants has been one of the fastest growing energy industries in the last decade. Number of small power inverters working parallelly with the low voltage grid is growing. At the same time, the requirements for the correct behaviour of network inverters in the network by the distribution grid operators are also increasing. The thesis deals with creation of a workplace for testing the operational and technical requirements for micro-sources. The first part of the thesis consists of literature search of inverter demands according to the current rules for parallel production operation. The second part deals with the setting up of test procedures and automation. The last part evaluates selected tests of the functions of the inverters.
|
|
|
Set of Simple 3D Games
Vrána, Michal ; Štancl, Vít (referee) ; Pečiva, Jan (advisor)
The objective of this thesis is Open Scene Graph graphic library and its usability in standard practice. More specifically, the goal of this project was creating set of demo applications, tutorials to them and one computer game testing possibilities of Open Scene Graph. Text of this technical report includes description of Open Scene Graph, its comparison to other graphic libraries, description of some techniques used in tutorials and in game, and description of implementation.
|
|
|
Operational Diagnostics of PV plant -T14 - Operation Optimizing
Kroutil, Roman ; Vrána, Michal (referee) ; Vavera, Miroslav (referee) ; Mastný, Petr (advisor)
The aim of the Thesis is theoretical clarification of the issues of photovoltaic power plants, their diagnostics, inspection and performance measurement, including negative impacts on their operation and subsequent application of theoretical knowledge during practical inspection and diagnostics of PV power plants. In its introductory part, the Thesis deals with design, manufacturing and development of PV cells and panels and describes other necessary elements and components, including their use in individual types of photovoltaic systems. Another part describes electric parameters of PV cells and panels, especially the parameters that can be found out by measurement of V-A characteristics and also the parameters affecting the shape of the V-A characteristics. The third part is focused on failures of photovoltaic systems, which include various defects of photovoltaic cells and panels, it also provides for adverse factors affecting operation of the entire system, associated not only with weather influences but also with the actual design of the photovoltaic system. The fourth part deals with possibilities of increasing the cost-effectiveness of electricity generation by PV power plants on the basis of practical experience of their operators. The subsequent part determines, on the basis of technical standards, procedures for PV power plant inspections, the procedures for measurement and diagnostics of PV power plants and also other prerequisites connected with inspections and measurements. This part includes also a description of requirements for measuring devices, most frequent measurement errors, adverse impacts affecting measurements and methods of assessment of the data measured. The last part of the Thesis is practical. At first it deals with verification of the impact of defects of PV modules on the shape of their V-A characteristics, then with execution of inspections and diagnostics of a particular PV power plant, evaluation of the data identified and measured, as well as with a proposal of optimisation measures to increase cost-efficiency of the operation of that particular PV power plant.
|
|
|
Distributed generation support for voltage regulation by means of power control
Majer, Šimon ; Vrána, Michal (referee) ; Blahůšek, Radim (referee) ; Drápela, Jiří (advisor)
This thesis is focused on voltage regulation in low voltage distribution system. It describes power management methods using photovoltaic inverters. The thesis describes the working PQ space of the inverter and the regulation characteristics of the active and reactive power in dependence on the voltage. The practical part focuses on the simulation of specific PQU control settings on the test models created in PSCAD. The model is used as a basis for real measurement. Outputs obtained from measurement and simulation are validated in the text. The last part of the thesis identifies limits for connecting resources with and without support.
|
|
| |
|
|
Using the Arduino module to manage the physical model of the MVE
Perout, Miroslav ; Vrána, Michal (referee) ; Radil, Lukáš (advisor)
This bachelor thesis is focused on acquaintance with the model of MVE and creation of a proposal of the structure of management on the basis of the obtained information. In the first step, the differences in the generators used are described and explained. Subsequently, according to the parameters of the measured system, individual measuring elements and modules are designed to send information to the selected microprocessor. In the last step, the issue of creating visualization software through the Processing environment is discussed.
|
|
| |
|
|
Modeling diffusion in hydrogels
Vrána, Matouš ; Sedláček, Petr (referee) ; Pekař, Miloslav (advisor)
This bachelor thesis is focused on basic knowledge about hydrogels and their potential uses, Brownian motion in hydrogels and it’s connection with diffusion and the possible modeling in COMSOL Multiphysics with the help of Particle Tracing Module. The aim of this work is to propose adjustments to a model given from COMSOL Application Library that could lead to a functional simple model true to the viscoelastic properties of the environment. Those were controlled through a given script for calculation of MSD in Matlab. The original model was adjusted with the help of rigid obstacles blocking particle transport. Second, rectangular model was also created, where the particle movement had been observed through created channels.
|
|
|
Aircraft's Engine Data Recorder
Vrána, Michal ; Šebesta, Ondřej (referee) ; Červenka, Miroslav (advisor)
This thesis deals with aircraft engine monitoring system. In the first part a study of current solutions, available on the market is made. Next is the description of test airplane, where the prototype of the instrument will be tested. Description of prototype instrument, it’s data handling and graphical solution are all analysed in the next chapter, with pros and cons of possible solutions. Last chapter deals with further instrument development and possible data postprocessing.
|
guest ::
RSS feed.