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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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Storage system optimization in factory Dobrá voda
BRADÁČOVÁ, Lucie
This bachelor thesis is focused on the proposal of the storage system optimization in a selected company - Dobrá Voda. The theoretical part is dedicated to the definition of essential logistics concepts and processes, emphasizing the importance of the whole storage system functioning and the use of appropriate storage technologies. The practical part is devoted to the examination of the selected subject with a focus on the observation of sectional warehouse processes, which are subsequently evaluated. The data assessment and analysis contributes to making crucial decisions. The aim of the research is to find a critical factors of management and operation of the warehouse and suggest how to optimize individual parts of the warehouse processes and achieve an overall optimization of the storage system.
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Reengineering of the purchasing activities in ZKL Brno, a.s.
Šnajdrová, Eva ; Svobodová, Hana (advisor) ; Klimeš, Vladimír (referee)
ZKL Brno, a.s. is manufacturer of rolling and special bearings. The introductory part contains definitions of purchase, reengineering, centralization or stock mnagement. Then a short company description and a description of the original condition of the purchase follows. The main goal of this thesis is to find mistakes in the management of purchase with the help of commodity analysis, personnel analysis and stock analysis. In the end there is a new directive for purchasing presented.
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