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Current distribution and heat losses in the low voltage circuit breakers
Musil, Pavel ; Janda, Marcel (referee) ; Makki, Zbyněk (advisor)
The work is focused on the calculation of decomposing the current and the thermal loss in circuit breakers of low voltage. In the work´s first half, there is a summary of the most frequently used circuit breaker elements with a focus on their constructional layout. The biggest attention is devoted to the circuit breaker marked LPN-16B by the company OEZ. A model of the under current trajectory of this specific element is created in a program Inventor on which the following calculation of decomposing the current and thermal loss was accomplished in a program Ansys. The obtained results are assessed in the conclusion of this work.
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Calculation of electrodynamic forces in 1600 A circuit breaker
Musil, Pavel ; Bušov, Bohuslav (referee) ; Valenta, Jiří (advisor)
The thesis is focused on the calculation of electrodynamic forces that counterwork on moving contacts of compact circuit breaker BL1600 from the company OEZ Letohrad. The thesis is divided into separates chapters that build on themselves. In the introduction the reason why we deal with calculation of dynamic forces and structural arrangement of current carrying path is described. In the following chapter there is a theoretical analysis of electrodynamic forces that conterwork on individual parts of circuit breaker´s element. The third part is devoted to structural arrangement of the circuit breaker BL1600. In this part we can find an example of using the circuit broker Modeion in practice. Two next chaptures deal with adjustment of the model of current carrying path which then serves for the calculation of electrodynamic forces. The rest of the thesis is devoted to my own calculations. These calculations are mainly stationary where we try to find the forces that conterwork on the contacts in a steady current and in a point in time. There are also dynamics calculation when we can watch the forces that counterwork on contacts in a certain time interval. The last chapter is devoted to a stationary calculation of forces that counterwork on the electrical arc which arises while turning the short-circuit current off. The obtained results are evaluated in partial conclusions of this thesis.
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Modeling and controling of a laboratory stand with an induction and DC motor
Musil, Pavel ; Pazdera, Ivo (referee) ; Knobloch, Jan (advisor)
This bachelor thesis deals with the theory of an asynchronous machine and the types of its management. It focuses on assembling a laboratory model with an asynchronous and DC motor connected via resolver on a common shaft. In order to set the model correctly, the asynchronous motor is first measured, the appropriate parameters are obtained and the model's behavior towards the real device is tested. The resulting part is a set of laboratory tasks possible for this model and equipment.
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Criminal Aspects of Drug Crime
Musil, Pavel ; Šelleng, Dalibor (advisor) ; Krupička, Jiří (referee)
The thesis "Criminal Aspects of Drug Crime" presents selected aspects of the current global problem of drug abuse in the criminal law. The aim of the thesis is to point out the negatives of drug abuse and their image in the current wording of the facts of drug offences. The thesis is divided into four parts. The first part focuses on the frequently used term "drug", as well as the breakdown of drugs and the effects of selected drugs. The second part gives an overview of the development of domestic legislation, focusing in particular on the Criminal Law of 1950 and 1961. The third part is the core part and presents the current legislation, primarily the meanings of drug offences defined by Act No. 40/2009 Coll., the Criminal Code. The fourth and last part serves to present the Romanian legislation on drug offences, highlighting its most interesting aspects.
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Výroba forem pomocí počítačem řízených obráběcích strojů
Musil, Pavel
This bachelor thesis deals about mold production using numerically controlled machines. The first part is focused on numerically controlled machines (CNC), their historical development, their division along structures and along their control systems. Other themes are the precision engineering production in the area of fitting components and the use of numerically controlled machines for mold making. The last part of the bachelor thesis is devoted to the materials of tools used for the production of models in the foundry industry.
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Current distribution and heat losses in the low voltage circuit breakers
Musil, Pavel ; Janda, Marcel (referee) ; Makki, Zbyněk (advisor)
The work is focused on the calculation of decomposing the current and the thermal loss in circuit breakers of low voltage. In the work´s first half, there is a summary of the most frequently used circuit breaker elements with a focus on their constructional layout. The biggest attention is devoted to the circuit breaker marked LPN-16B by the company OEZ. A model of the under current trajectory of this specific element is created in a program Inventor on which the following calculation of decomposing the current and thermal loss was accomplished in a program Ansys. The obtained results are assessed in the conclusion of this work.
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Calculation of electrodynamic forces in 1600 A circuit breaker
Musil, Pavel ; Bušov, Bohuslav (referee) ; Valenta, Jiří (advisor)
The thesis is focused on the calculation of electrodynamic forces that counterwork on moving contacts of compact circuit breaker BL1600 from the company OEZ Letohrad. The thesis is divided into separates chapters that build on themselves. In the introduction the reason why we deal with calculation of dynamic forces and structural arrangement of current carrying path is described. In the following chapter there is a theoretical analysis of electrodynamic forces that conterwork on individual parts of circuit breaker´s element. The third part is devoted to structural arrangement of the circuit breaker BL1600. In this part we can find an example of using the circuit broker Modeion in practice. Two next chaptures deal with adjustment of the model of current carrying path which then serves for the calculation of electrodynamic forces. The rest of the thesis is devoted to my own calculations. These calculations are mainly stationary where we try to find the forces that conterwork on the contacts in a steady current and in a point in time. There are also dynamics calculation when we can watch the forces that counterwork on contacts in a certain time interval. The last chapter is devoted to a stationary calculation of forces that counterwork on the electrical arc which arises while turning the short-circuit current off. The obtained results are evaluated in partial conclusions of this thesis.
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Analysis of business succes factors
Musil, Pavel ; Klečka, Jiří (advisor) ; Kaňka, Jan (referee)
The main goal of thesis is to make situation analysis of company, which operates in the area of handling equipments. The theoretical part focuses on financial analysis methods and techniques of strategic management in the form of analysis of external and internal environment of business. Based on application of methological apparatus, it happens in the practical part identify and analyze factors affecting the prosperity of the organization. In the period 2005 to 2009 is evaluated economic situation of company.
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Financial analysis of company Yale CZ s.r.o.
Musil, Pavel ; Lodr, Jakub (advisor) ; Tyll, Ladislav (referee)
In this thesis is carried out financial analysis of Yale CZ based on the use of the company's financial statements for the years 2003 to 2007. Thesis is divided into two chapters. The first dealt with the methodological apparatus, which is in the subsequent second chapter applied to analysed firm. In addition to horizontal and vertical analysis or ratios we can find out in the analysis the financial health of the company, its threat to bankruptcy or comparison with the industry.
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Foreign direct investments in marginal lines
Musil, Pavel ; Kalínská, Emílie (advisor) ; Laláková, Eva (referee)
Práce hodnotí přímé zahraniční investice v okrajových oborech v regionu střední a východní Evropy. Část práce je věnována určení okrajových oborů a určení determinant nízkého přílivu investic do vybraných oborů. Následně je na příkladu konkrétní zahraničního investora provedena analýza, která ukazuje, že rozhodování se neliší od jiných investorů, pouze má svá specifikace. Práce se snaží ukázat, že i okrajové obory a PZI, které do nich směřuji, nemusí být výjimkou a naopak jich může přibývat.
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