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Desing of supplementary coding switching unit
Štefl, Martin ; Štohl, Radek (referee) ; Fiedler, Petr (advisor)
The diploma thesis is dealing with the area of controlling and safety technology for the railway transportation. The problems of the design and practical realization of an functional sample of switching unit supplying the ends of a track circuit are solved here. The switching unit enables the operation of the train control system. The outline of the design is formed by a power switch operated with a microprocessor. In addition, for the increase in safety the switching unit contains a control processor, which is controlling the right function of a work microprocessor and the failure-free state of a power switch.
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Power supply module for servo-drive
Kudláček, Pavel ; Procházka, Petr (referee) ; Červinka, Dalibor (advisor)
The aim of the diploma thesis is to theoretically design and to put the mains power supply module for two-axis servo amplifier TZG 560 with the total power 28kW for the company TG Drives into practice. The analytical design of the power part with the braking circuit, the calculation of power components’ heat balance, EMI filter design and realization of measuring, controlling and indication circuits are described in the thesis. In addition, the mechanical device construction, structure of the controlling program and the results obtained in the verification process of the module functionality are presented.
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Iverter for three-phase motor
Mikuška, Martin ; Červinka, Dalibor (referee) ; Knobloch, Jan (advisor)
This master’s thesis goes into design of particular circuits for three phase inverter. Inverter’s control is ensured by digital signal controller MC56F8013 with his program. Principle of control is suggested for individual motors. Inverter design considerate universal use and capability for any three phase motor. Particular blocks are compatible each other.
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Analysis of Trench Insulated Gate Bipolar Transistors
Karlovský, Juraj ; Polčák, Josef (referee) ; Bábor, Petr (advisor)
This thesis is focused on the selection and optimalization of suitable analytical methods for study of TIGBT (Trench Insulated Gate Bipolar Transistor) structures with a use of methods, that depict material composition of the studied sample. The theoretical part contain explana-tions of the analytical methods used for measurements and basic principle of operation of an TIGBT transistor. The practical part contain the methodic of measurements and the evaluation of the obtained data and design of optimal procedures in done experiments.
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Coilgun
Kovařík, Martin ; Pavlík, Michal (referee) ; Šteffan, Pavel (advisor)
This bachelor’s thesis describes the design and construction of electromagnetic gun for testing projectiles from different ferromagnetic materials with maximal power 19 J. Conventional projectile propulsion mechanisms include the use of compressed air or explosion which places theoretical limits on the maximum muzzle velocity limited by laws of thermodynamics. The electromagnetic coil gun, explores the use of electromagnetism in accelerating projectiles which offers a much higher theoretical limit on muzzle velocity. In addition of an electromagnetic acceleration is possible to regulate output velocity/energy of projectile, and acceleration applied on projectile.
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Microprocessor controlled BLDC motor inverter realization
Mikuška, Martin ; Cipín, Radoslav (referee) ; Knobloch, Jan (advisor)
This bachelor’s thesis goes into electronic commutated motors, their inverters and specific parts of the general pulse converter. Next it is described step-down converters, push-pull converters and the principles that are supported by practical exercises. The next part describes the design of the power transistors driver and problems of galvanic separation by optocouplers.
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Low frequency active artificial load
Lízner, Václav ; Papica, Petr (referee) ; Kubíček, Michal (advisor)
This diploma thesis is focused on synthetic loads, especially electronically controlled loads. The thesis analyse principles of mechanically and electronically controlled loads and theirs operation modes. The paper also carried out a search of AC loads available on the market. The parameters of the AC load were based on the requirements provided by client. The functionality of the designed load is verified by simulation. The thesis continues with realization of the designed schematics and bringing the load to function. At the last section of the thesis are detail parameters of the designed load verified by measurement.
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Multipurpose power supply for electroplating system
Pinďák, Michal ; Vorel, Pavel (referee) ; Procházka, Petr (advisor)
The aim of the bachelor thesis is the practical proposal of the multipurpose power supply for the electroplating system. The individual technological processes of electroplating, for which the parameters of the source have to be adapted, are presented in the theoretical part. This part includes the entire division of pulse DC/DC converters without a transformer from the aspect of working quadrants and finally the ways of their controlling. There is also introduced the analysis of parameters of the presumed DC power supply XP Power HDS3000PS60. The conclusion of the thesis is focused on the entire proposal of converter wiring, its construction and subsequent commissioning through the software LabVIEW.
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Market survey of high power semiconductor devices
Jankovský, Martin ; Rujbrová, Šárka (referee) ; Zmrzlá, Petra (advisor)
Hlavním tématem práce jsou moderní výkonové polovodičové součástky. Jsou diskutovány i rozvíjející se materiály s velkou šířkou zakázaného pasu a jejich elektrické vlastnosti. Práce je pak zaměřena na tyto moderní součástky, včetně jejich teorie, aplikace a dostupnosti na trhu. Dále práce předkládá tabulky jednotlivých zařízení, které jsou nabízeny evropskými předními výrobci polovodičů.
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Converters for HVDC Energy Transmission
Martinec, Roman ; Klíma, Bohumil (referee) ; Červinka, Dalibor (advisor)
The aim of this thesis is to introduce the high-voltage direct current (HVDC) systems used in the world today. The work lists the basic principles of connection between individual HVDC stations, as well as the configuration of the HVDC transmission link. In addition, the work describes the topologies of converters currently in use and also their principal semi-conductor components. In the conclusion of the thesis, the HVDC technology is assessed, including its advantages and drawbacks.
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