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Optimal control of a wind power plant
Paděra, Zdeněk ; Veselý, Ivo (referee) ; Zezulka, František (advisor)
The thesis first provides a brief introduction to wind energy and bring in the current status of this rapidly growing industry. Further, the distribution of wind turbines, their specific and general description of the construction is described. Emphasis is placed on wind turbine control system. The first goal was to build a simulation model of wind power plant in the MATLAB / Simulink usable for subsequent overall design of control system of wind power plant. Furthermore, the analysis of the control of individual components of power station in the light of the possibility of optimizing the operation and in particular the optimization of efficiency of plant, i.e. maximization of the reached performance is performed. In the last part of this thesis structure and parameters of individual control system of plant is designed and the results are discussed.
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Small Wind Power Plant Project
Görig, Tomáš ; Paar, Martin (referee) ; Matoušek, Antonín (advisor)
This thesis deals with finding an suitable locality for construction and technical design of small wind power plant station. The several ways are described and the best one is chosen. Also are projected and described several choices of usage the produced energy. Next part deals with economical side of power plant project as well as the ways of usage the produced energy. Results of this evaluation helped the investor to choose the best option.
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Wind power plant in a chosen locality
Dohnal, Petr ; Škorpík, Jiří (referee) ; Martinec, Jiří (advisor)
This master thesis deals with problematic wind power plants. There are described advantages and disadvantages of wind power plants and their environmental impacts. Thesis include chosen locality for wind power plant, chosen fitting types of turbines and calculation which choosing turbine for chosen locality. There are accomplished parametric studies of main parameters. From this study is chosen best fitting model of wind turbine. In the end are adduced statistics from Czech Republic, Europe and world.
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Usability of small wind turbine at household
Veselý, Petr ; Kracík, Petr (referee) ; Škorpík, Jiří (advisor)
The topic of bachelor’s thesis are small wind turbines, which can be divided into five basic parts. A history of wind energy is described in the beginning. Second part is all about manufacturers of wind turbines. Legislative and operating conditoins are prescribed in next section. Penultimate section deals with construction and main components of small wind device. Last part contains aerodynamic design with technical calculations.
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Wind power generation and energy accumulation possibilities
Krbal, Michal ; Mastný, Petr (referee) ; Drápela, Jiří (advisor)
The goal of this bachelor’s thesis is to inform about conditions of running and the character of running of the wind power plants and about the suitable storage systems for the possibilities of time invariableness of power supply. For these reasons is immediately in the first chapter of the thesis described state of using wind power plants in The Czech republic and other countries in Europe which produce electric power. Description of individual functional parts is important mainly from the point of electrician conversion of kinetic energy of wind to electric energy with help of the electric power generator with the highest efficiency and without need for maintenance. It is necessary to know those functional parts of the power wind to be able to design appropriate storage system. The output electric power is very variable at time, mainly output voltage, because wind energy is variable too. The characteristics of the wind power plants as output voltage, frequency and their switching graded at time have to in accordance with requirements of the electricity supply systems not to disturb the stability or even collapse of the electricity supply system which would lead to serious economic consequences. These predicaments can be prevented with precise meteorological forecast or by using the acceptable storage system with small acquisition and operating costs, requirements to safeness and long service life, low weight and high efficiency of conversion of energy. The storage systems are classified into centralized and decentralizing systems with requirements to dynamic running and running time. To fulfil these conditions it is essential to choose acceptable and accessible locations with year lasting qualities of wind, which are being checked in advance using measurement and mathematical calculations.
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Design of gearbox for wind power plant
Zavadil, Roman ; Prokop, Aleš (referee) ; Řehák, Kamil (advisor)
The main goal of this diploma thesis is the design of a gearbox for a wind power plant. The introductory part contains a set of knowledge about wind turbine gearboxes and introduces the reader to the issue in terms of the distribution of gearboxes, gears used, recommended bearings and in terms of wind turbine generators. The design itself begins with determining the input parameters of the transmission based on a simplified aerodynamic model of the wind turbine rotor. Further, using these parameters, a device arrangement consisting of two planetary gears and one permanent gear. The entire transmission is examined in terms of kinematics, and in both planetary gears, the kinematic examination is performed using the Willis method. Then, the helical gearing is designed and its normal modulus, geometry, forces are calculated and lastly the strength calculation of the gearing is performed. Then the durability of the bearings is calculated based on a force analysis and the patented flexible pin construction is checked regarding its bending and deflection. The housing of the entire device is constructed regarding the smallest possible installation space in the control room. The final part of the work is devoted to the strength control of the bolts at the first ring gear using the finite element method and modal analysis of the entire gearbox also using the FEM.
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Energy production systems designed to reduce the energy dependency of a family home
Švehla, František ; Lisá, Hana (referee) ; Toman, Filip (advisor)
This thesis deals with the issue of electricity production in family houses, focusing mainly on photovoltaic and wind power plants, but also on the use of hydroelectric and biogas sources. The main objective of the thesis is to analyse and compare methods for efficient electricity generation in households. Technical aspects such as the appropriate size and location of photovoltaic systems and wind turbines, their technical parameters, and above all issues of economic viability are examined. The most important result of the work is the identification of optimal combinations of renewable energy sources for individual households, which can lead to a significant reduction of energy consumption from conventional sources and improve the energy independence of houses. Based on the analyses and calculations, recommendations for decision-making in the selection and implementation of renewable energy sources in family houses are presented. This work provides interesting insights for homeowners, energy consultants and professionals in the field of electricity generation using renewable energy sources in family houses.
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Energy supply of the ski resort
Turčina, Lukáš ; Skála, Zdeněk (referee) ; Pospíšil, Jiří (advisor)
The environmental targets of the European Union Member States are to achieve carbon neutrality in the next few years by producing green energy. To offset the impact of climate change causalities, it is crucial to increase the share of renewable energy resources as well as to reduce the dependence on fossil fuel imports. The main focus of the thesis is to increase energy sourced from alternative resources in ski resorts. Furthermore, a specific design of a wind power plant located directly in the ski resort together with the storage of the remaining energy is introduced to achieve the thesis’ objective. To select a suitable wind turbine, there is a need to choose a proper construction site that should dispose of stability and good-quality wind conditions. The performed analysis concentrates on the wind speed and frequency on the identified site. As a result, the performance of the selected wind turbine can be calculated. Moreover, given the turbine power and wind frequency, the amount of energy produced can be calculated. The potential electricity production is then compared with the ski resort’s consumption. The findings suggest that with suitable wind conditions and proper planning of energy production and storage, it is possible to cover a significant amount of the resort’s consumption. However, the model is dependent on the speed and stability of the wind, which may be highly volatile over time. Nevertheless, even such small steps can be crucial to achieving the set goals and can indicate the direction in which society will move towards.
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Design of gearbox for wind power plant
Zavadil, Roman ; Prokop, Aleš (referee) ; Řehák, Kamil (advisor)
The main goal of this diploma thesis is the design of a gearbox for a wind power plant. The introductory part contains a set of knowledge about wind turbine gearboxes and introduces the reader to the issue in terms of the distribution of gearboxes, gears used, recommended bearings and in terms of wind turbine generators. The design itself begins with determining the input parameters of the transmission based on a simplified aerodynamic model of the wind turbine rotor. Further, using these parameters, a device arrangement consisting of two planetary gears and one permanent gear. The entire transmission is examined in terms of kinematics, and in both planetary gears, the kinematic examination is performed using the Willis method. Then, the helical gearing is designed and its normal modulus, geometry, forces are calculated and lastly the strength calculation of the gearing is performed. Then the durability of the bearings is calculated based on a force analysis and the patented flexible pin construction is checked regarding its bending and deflection. The housing of the entire device is constructed regarding the smallest possible installation space in the control room. The final part of the work is devoted to the strength control of the bolts at the first ring gear using the finite element method and modal analysis of the entire gearbox also using the FEM.
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Wind power plant
Šponiarová, Petra ; Prokop, Aleš (referee) ; Řehák, Kamil (advisor)
The electricity production from renewable sources is a very current topic. It also includes the electricity made by wind power plants, which the bachelor’s thesis concentrates on. An extensive research study was conducted to provide an overview of wind turbine types. Concerning wind power plants, apart from their visual impact, noise and vibration connected to their operating is an often discussed issue. The construction of a wind turbine stands for the most important role in reducing such unwanted effects. Technical experiments following specific standards and recommendations are performed to assess the impact of wind turbines-emitted noise and vibration on humans. In order to assess noise and vibration of a wind turbine a technical experiment is proposed, which uses different approaches to determine the critical components. The selection of a suitable measuring equipment and the choice of location for its subsequent use are important parts of the design. At last, the use of wind power plants is critically reviewed.
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