This Masterâs thesis concerns about the safety of machinery, in the literary research part you can find information about the law system and requirements of European Union and Czech Republic. There is a description of the legal enactments, which the manufacturers of machinery needs to follow. Second part of this thesis is about the safety of a milling center. The milling center is analyzed here, you can find here the description of its components. The milling center was then described with the help of block diagrams. For each component from the block diagram you can find here a list of dangerous situations which can occur and also a list of safety precautions for each situation. Based on these information the list of requirements for the milling center was made.

This thesis is focused on the security and improving of electrical rotating machines service life, especially asynchronous motors. Work includes a description of the most common disorders, short description of the asynchronous motor cage casting, analysis of provided decommissioned motors with photo documentation. The last part of this thesis is focused to vibrodiagnostic of asynchronous motor with simulated imbalance and motor emplacement by laser.

Master’s thesis summs up issues of mounting pemanent magnets on rotor surface of permanent magnet synchronous machine. Literature reseach is divided in two parts. First one shows studies and experiments researching the impact of manufacturing tolerances of permanent magnets and wrong mounting on the rotor on cogging torque . The second part focus on analytical aproach of defining influence of permanent magnets on magnetic flux density in the air gap and phase induced voltage. Practical part focus on design of a prototype machine, wich will be used to research the impact of tolerances and imperfections. Parametric model of the prototype machine is created in Maxwell and is subjected to analysis via finite element method. Three different analysis were run, offset of permanent magnet, decrease and wrong dicertion of magnetization. At last the result of cogging torque and induced voltage are compared.

This diploma thesis deals with the realization of a simulator for a trash-rack cleaning machines in small hydroelectric power stations. This thesis contains adequate research about a trash-rack cleaning mashines. This diploma thesis is focused on detailed description of the hardware and software part of the created simulator and describes the realization of a control system, which verified the functionality of the simulator.

This master's thesis deals with creation of generators of the code for existing virtual platforms QEMU and OVP. This work consist of study of techniques, which are used by virtual machines for their work. Main part of this work is the design of process, which transforms input instruction sets to the code used by these virtual platforms. As the result of this work functional programs, which generate the code for these virtual platforms, was created.

This thesis deal with design and implementation of innovative cooling method, intended primarily for medium-power synchronous generators. The main objective of this proposal is to remove the large heat exchanger connected to generator. This heat exchanger unduly increases the space requirements for the machine location. The proposed solution is to use a direct water-cooled stator. It is assumed that the rotor winding will be still cooled by air. Unlike current cooling system, the hot air from the rotor can be cooled in smaller cooler inside the generator. In this work are described methods which can be used for design of water cooling basic parameters, taking required temperatures into account. A small induction motor was selected for practical verification of the proposed cooling concept. This motor was modified into two variants - related to the old cooling of synchronous generators and related to the proposed solution. Both of these variants were measured and compared with each other. Subsequently, CFD models of these two variants were set up. Measured temperatures were used for debugging of models and identification of material properties of components of these machines. The final model of water-cooled variant also makes it possible to simulate the work of motor for higher performance and to determine the overload compared with the old cooling variant. Some knowledge and experience obtained from the small water-cooled induction machine were used in the design of water-cooling for large synchronous generator. In a similar way, CFD models of the old variant of cooling and proposed variant of water- cooling were created. Although these models were not verified by actual measurements on the generators, the results indicated that the application of water-cooling in this type of machine is appropriate and provides many benefits.

The induction machine with a squirrel cage is a workhorse of the industry. The main advantage of an induction machine is the low manufacturing price, simple and robust construction, low maintenance requirements. However, for high-speed applications, induction machine with a squirrel cage requires design modification due to the mechanical restrictions. The objective of this thesis is to show design process, methodology and assembly of the induction machine for high-speed applications. In this thesis, the rotor dimensioning data are presented. The results are demonstrated on the design of the 6 kW, 120 000 rpm solid rotor squirrel cage induction machine. This thesis also contains calculation and design of three different electrical machine topologies for a turbo circulator application. The electrical machines are designed with 6 kW output power at 120 000 rpm. The machines are estimated by using electromagnetic, thermal, and mechanical calculations. The drawbacks and advantages of each topology under study are described. For other high-speed applications, a comparative method helps in choosing the suitable electrical machine topology by examinations of discussed criteria. Rotor design effect on the electromagnetic performance of the induction machine is shown. Mechanical stresses are calculated with Finite Element Method analysis. Various assembly technologies to produce solid rotor with squirrel cage are discuss and compare. Describe approach enables high electromagnetic performance and durable construction of the high-speed induction machine. Work is confirmed by measurement on the manufactured prototype.

The thesis theme is the design of 3 MW high-speed permanent magnet synchronous motor. The work is divided into several parts, and contains the information given on the topic. The first part lists trends and new technologies of high-speed electric machines, and the issues and construction of high-speed synchronous machines are also listed here. In the second part, the machine is analytically designed from the specified values, which is then modelled in the RMxprt program. In the penultimate part, the engine is simulated by programs that are included in the ANSYS Electronics Desktop package, they are RMxprt and Maxwell. The modified engine model in RMxprt is simulated using defined formulas and then converted to Maxwell 2D, where the engine is simulated using the finite element method. In the last part, the results from the analytical calculation are compared with other high-speed machines. In addition, the results of simulations from RMxprt and Maxwell were compared in the last part.

As a part of international economic relations, development cooperation is a relatively new issue area of the Czech foreign policy. In spite of the strong Czechoslovak cooperation with the pro-socialist Third World countries during the Cold War, the country quickly abandoned delegitimized development activities only to restart them in the mid-1990s. This time, the policy was induced mostly externally by the international and EU commitments to provide aid to developing countries. Building on James Ferguson's concept of 'anti-politics machine' and the Bourdieusian concept of illusio, this dissertation argues that (i) the apparatus of the Czech development cooperation deals with development as a technical matter and leads to the depoliticization of the Czech relations with the South; and (ii) the low public awareness of the policy and the dependence of the civil society on government funding tones down their criticism and facilitates the use of the policy for the particular interests of the Czech implementers instead of contributing to poverty reduction in the South. The second chapter justifies the interdisciplinary approach adopted in the dissertation. It argues that in the same way as multidimensional poverty cannot be reduced to mere income, a holistic analysis of development cooperation must extend beyond the neoclassical economic approach and include social, cultural, political and environmental aspects of development. The third and fourth chapters analyze accordingly the discourses (historical and legal sources, political and social context, government strategies) and practices (content of bilateral cooperation, its effectiveness, actors and interrelations between them) of the Czech development cooperation. The following chapters extend from the narrow topic of development cooperation to gender as a cross-cutting issue and further to the problem of policy coherence. While gender has gained serious credit on the international development research and policy agenda, it is reflected in policy and operational documents only formally, making bilateral cooperation projects gender blind, and hence detrimental to women. Finally, the Czech discourses and practices of the formally institutionalized policy coherence for development are analyzed in cases studies on migration, trade and agriculture. The chapter argues that slight changes in other government policies may have greater impact on developing countries than any substantial reforms of development cooperation. Overall, the dissertation advocates for a repoliticization of the development agenda and its return to the public space. So far, it was mostly the European Union funding that incited the civil society to raise new policy issues and question the effectiveness of the Czech development cooperation in reducing global poverty, but it is crucial to involve political parties, civil society at large, media and academia in the process as well. An annex lists a range of detailed policy recommendations for development cooperation generally, in particular its gender dimension, and its coherence with the Czech migration, agriculture and trade policies.

In the introduction there is described a history of the post office. There is also outlined a current state and a future intention of Czech Post (Česká pošta s. p.). Further there is explained an issue of the formatting of the address side of postcards and writing. In another part there is a job description of the sorting machine SIEMENS IRV 3000 and also information on the location of this sorting machine at each collecting transport nodes. In the conclusion there is described a consideration to increase a number of appropriate mail pieces for the sorting machine.