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Middle-level control of FB-MMC converter in Delta connection
Kokeš, Petr
Control of a modular multilevel converter (MMC) is technically far more complicated than control of a standard 2-level converter. It is not only because of a great number of series-connected cells. For a MMC converter we need to cope with another control level (mentioned here as the middle-level control), which means balancing of voltages among MMC branches and the control of currents circulating inside this converter. For the Delta connected MMC with full H–bridge (FH) cells a convenient method for voltage balancing among all three MMC branches has been analysed and the appropriate control structure has been designed. Then the functionality of this balancing method has been verified using computer simulations and also tested with two MMC physical models operating as active power filters on 400V and 6kV grids.
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Design of special purpose tool for sag measurement
Mejzlík, Jiří ; Vetiška, Jan (referee) ; Houška, Pavel (advisor)
The aim of the thesis is to design a special purpose tool for sag measurement. Three possible solutions are proposed, for each the production cycle time is calculated and its approximate costs are estimated. The best solution in terms of a trade-off between both key quantities is suggested. Next part of the work deals with the selection of suitable drives for the manipulator as well as of the other components for the whole electrical device. Finally, a possible automated control of the complete machinery, including the electrical wiring diagram, is presented.
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Peristaltic pump control via USB interface
Balogh, Jaroslav ; Chmelař, Milan (referee) ; Čech, Petr (advisor)
The purpose of this bachelor’s thesis is to practical realization of connection between peristaltic pump Rainin Dynamax RP-1 and PC, using USB interface. Integrated circuit device FT232R has been used in USB-RS422 converter, due to modified RS422 interface, which the pump RP-1 uses. There was also developed software for pump’s remote controll. RP-1’s functions can be driven from remote side or eventually automatized with this software. This work is based on semestral thesis and in future can be used in another aplications with RS422 or with RP-1 pump. Department of Biomedical Engineering, attached to FEEC, Brno University of Technology, will use this remote controll in analysis of DNA.
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Bus wiring systems for complex building management
Mokrý, Lukáš ; Macháček, Jan (referee) ; Bátora, Branislav (advisor)
The aim of my thesis is to examine current opportunities of bus wiring systems for complex building management, mainly its power and economic evaluation. It can be simply called intelligent electrical installation. I will examine two systems from INELS and ABB company. These systems contain functional components, mainly modules and controllers. By means of other materials, I’ll create a panel. Components will be placed there and electrically connected. After this, systems will be put into operation and programmed by means of their software. The next step is measuring of quatities during the various conditions of systems and consumption, which is one of the main aims of the thesis. Two apparatuses will be used for measuring. This thesis itself will contain theoretical analysis of systems, their description, using the way of operation and main advantages and disadvantages. Single components and complete process of measuring and working in laboratory will be described. An overall evaluation and comparison of the systems from various points of view, including the price, will be put together from results.
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Design of control system of pneumatic manipulator
Roun, Jiří ; Bradáč, František (referee) ; Vetiška, Jan (advisor)
This bachelor thesis is about the design of the control system for the pneumatic manipulator. Initial research describe the current possibilities of pneumatic products for driving and positioning of pneumatic assemblies. The practical part of this thesis describes the connection of hardware with PLC terminals and the design of software for controlling the manipulator. At the end of the thesis is testing part realized with designed software and measuring software.
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Application of Management Control System in a Business
Špicarová, Kateřina ; Marvanová, Radka (referee) ; Žižlavský, Ondřej (advisor)
The master´s thesis is focused on application of Management Control System in company especially on planning and analysis of deviations. In theoretical part of the thesis will be described basic charakteristic and terms and will be used continualy in the analytical part. In this part Honeywell s.r.o. will be described and analyzed its current situation and methods for planning costs. Then will be analyzed and interpreted deviations based on actual data in MS Excel. In the proposal part will be propose actions to improve the current situation in the form of implemetation new program MS Power BI or Tableau into controlling team.
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Control modernization of two-axis manipulator
Mejzlík, Jiří ; Vetiška, Jan (referee) ; Houška, Pavel (advisor)
The bachelor thesis addresses the modernization of two-axis manipulator that is a part of the galvanizing line. The introductory section describes and evaluates the current situation and specifies the requirements for the device modernization. The selection of the proposed control is based on the analysis of possible solutions which are described in this work. The next part deals with the selection of suitable components and describes the process of implementation.
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Refurbishment of the Brno - Tuřany Airport
Paťha, Radim ; Ruller, Ivan (referee) ; Nový, Alois (advisor)
This diploma thesis describes the reconstruction of the operation parts in the international airport in Brno and proposal of a new arrivals hall. The diploma thesis also shows the specific management of the airport, connection with the existing concourse and design of an appropriate concept of addition of new buildings with currently missing services. The reconstruction deals with the insufficient capacity of the arrivals hall and current bad technical conditions and its inconvenient capacity of arrivals and departures. In this concept, the airport capacity is doubled, up to 2 000 000 passengers per year. This concept, based on axial and mutual synergy of building parts, contains a design of two objects, the central part with public services (clearance, waiting hall, restaurant, control tower, areas for rent, arrivals and departures support), and arrivals hall (inspection, luggage clearance hall). The diploma project is developed in the range of a study. It is based on a previous urban study of the airport in connection to following-up the development of neighboring towns and surrounding area.
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Control Unit for Autonomous Vacuum Cleaner
Matějů, Jan ; Kopečný, Lukáš (referee) ; Žalud, Luděk (advisor)
This paper is in introduction focused on review of robotic vacuum cleaning and evaluation of available products qualities. However the main focus of this paper is system design of all subsystems, control systems and PCD design of robot electronics. In this paper is also described a method for evaluating approximate distance of robot from the obstacle. There are also described problems of system design of IR proximity sensors. The last part of this work is development of control software for robot and its testing.
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Risk Management of Bank Credit System and Decision Making Process
Skovajsa, Radek ; Kryštof, Zdeněk (referee) ; Čižinská, Romana (advisor)
The theoretical part of this thesis describes the development of Czech banking sector, especially with emphasis on post-revolutionary rebirth within the new conditions of market economy. The following part demonstrates the decision-making credit account process of a bank on a particular case study based on the methodics and procedures leading up to maximal elimination of credit risk. At the same time, the author presents a partially modified internal opinion on a decision of particular business transaction. It is accented that every decision of a bank must comply with the regulations of CNB. The conclusion of the thesis affirms the maximal efforts of domestic banks to minimalize risks within their decision-making credit account processes, which is mirrored in current stability in the development of Czech banking sector.
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