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Laboratory machine-set with induction and DC machine
Hudák, Ondřej ; Feiler, Zdeněk (referee) ; Červinka, Dalibor (advisor)
The work addresses the design and implementation of a universal laboratory workstation designed to teach a course on electrical drives. Workplace will be formed sets consisting of DC motor with permanent magnet on a 400W power supply voltage of 24V and induction motor with 180W power on 3x24V. The engines are connected through a flexible shaft coupling. The asynchronous motor is located on the extended shaft resolver for scanning speed and rotor position. Both engines will be supplied from the transistor inverters. The workplace will be designed for maximum clearness and resistance to damage by improper handling.
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Cyclic acceleration method for electrical machines measurement
Ředina, Ondřej ; Ctibor, Jiří (referee) ; Červinka, Dalibor (advisor)
The bachelor thesis deals with the cyclic acceleration method of measuring and loading electrical machines. The thesis contains a description of the measuring method and processing of measured data. The application of the method was realized in the company AVL Moravia s. r. o. The processing of the measured data in the form of a sine wave was performed in the MATLAB program. At the end of the thesis are summarized the inaccuracies of measurements and following optimization of this method.
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Auxiliary power sources in electric traction
Kuzdas, Jan ; Procházka, Petr (referee) ; Červinka, Dalibor (advisor)
The purpose of this thesis is proposal of auxiliary power sources in electric traction. Specifically we deal with two converters. Both of them were used in traction vehicle's applications, which are developed by the Department of Power Electrical and Electronic Engineering, Brno University of Technology. First converter was used as a power supply in secondary traction mechanism of electric locomotive. Second one to power supply of dash board in automobile with fuel cells.
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High-voltage method for measuring the specific conductivity of tissue
Uher, Jakub ; Novotná, Veronika (referee) ; Červinka, Dalibor (advisor)
This master´s thesis is dedicated to the ever-improving medical method - electroporation. This work is divided into six chapters. The first two chapters describe what electroporation entails and how it affects the tissue, how we can evaluate it and how much influence the change in tissue temperature has on measurements. The third chapter deals with the design of coaxial arrangement of electrodes - from the initial simulation to the physical product. In the fourth chapter, the measuring workplace is shown. The penultimate chapter is described and processed by individual experiments carried out on animal tissue. The last, sixth chapter summarizes the possible inaccuracies that arise in the measurement and therefore affect the results.
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PLC systems in education process
Král, Radek ; Ctibor, Jiří (referee) ; Červinka, Dalibor (advisor)
The bachelor thesis deals with programmable logic controllers for teaching. The thesis is divided into six chapters. The first chapter describes the basic programming languages as well as their resolution with graphical preview. The second chapter deals with programming environment GX Works2 from Mitsubishi Electric. Chapters three and four describe the SoMachine programming environment from Schneider Electric and Automation Studio from B&R. The fifth chapter of this bachelor thesis compares individual programming environments from the perspective of a common user. Nine laboratory tasks are proposed in the final part. For each lab task, a lab tutorial is created, and for most, an example of a logical program and visualizations.
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DC/DC converter for car-audio amplifier
Šmarda, Vladislav ; Vorel, Pavel (referee) ; Červinka, Dalibor (advisor)
This Bachelor thesis deals with the design and construction of a resonant switching power supply for car audio-amplifier. The main subject of the theoretical part is the mathematical description of the applied ZVCS Push-Push topology. Also a general guide, for designing this type of topology is mentioned. There is described the optimalization procedure of the main switch mode power transformer with respect to the high efficiency of the proposed power supply. Then the designed power supply is made and tested.
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Laboratory stand for educational purpose
Forró, Barnabás ; Knobloch, Jan (referee) ; Červinka, Dalibor (advisor)
This semestral thesis contains proposition of driver with mosfet moduls, which are used in laboratory stand. In first part of project there are described properities and functions of driver modul. In another part I made a proposition of driver, that is used in stand and make a request against damage by unprofessional work. The second part of the bachelor thesis deals with the designed driver circuitary.
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Universal controller for car or motorcycle dynamo
Picmaus, Jan ; Knobloch, Jan (referee) ; Červinka, Dalibor (advisor)
The thesis deals with the issue of design of an electronic controller of charging for historical cars using a dynamo. It contains theoretical analysis of the machine itself (dynamo) and analysis of a shunt wound dynamo and a seperately excited dynamo. It~is also focused on possible usage of a dynamo in various vehicles. The work compares industrially produced controllers with amateur manufacture as well as confronts their positives and negatives. All requests for the implemented controller are deduced from the analysis of the industrial and amateur controllers. The thesis consists of process plan of controller connection including the final working version and also the project and realization of a PCB as well as following description of putting the controller into practice and installation in the car. The thesis includes the project of current and voltage controllers, following adjustment and operation tests with use of the real device.
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