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Low power BLDC electric drive
Štajner, David ; Červinka, Dalibor (referee) ; Pazdera, Ivo (advisor)
The aim of this diploma thesis is to introduce a construction and controlling of the EC motor. On a base of knowledge make up a EC motor model in Matlab Simulink, with a position scanning providing by Hall probe. The EC motor model should be with its behavior close to the real EC motor as much as possible. There were a given requirements on the motor. On the base of those requirements was chosen a real EC motor. Its catalog values were put in the EC motor model in Matlab and the results were compared with real data. Next task was to design a real controlling driver of EC motor, which should has a minimal size. This driver was constructed and thermal test was made a on given load.
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Asynchronous dynamometer - power inverter
Vetiška, Vojtěch ; Červinka, Dalibor (referee) ; Klíma, Bohumil (advisor)
This project deals with the power converter for the asynchronous dynamometer. Inside of the document we shall acquaint with claims towards switching transistors and actuators. Furthermore we shall go through the principle and the wiring of three-phase converters and active rectifiers . We specify particular conditions of parameters for the power converter. For these conditions we shall dimension particular elements of the power converter. On the end we shall design the mechanical arrangement of the power circuit and create the design documentation..
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BLDC motor controller
Němec, Petr ; Červinka, Dalibor (referee) ; Knobloch, Jan (advisor)
The goal of this Master thesis is to design a power convertor for BLDC motor 48V/2kW. Emphasis is placed on the small dimensions of the final printed circuit board. Therefore, power SMD transistors STL135N8F7AG are used in small packages PowerFlat 5x6. To reduce area of the PCB, electrolytic capacitors are mounted on a separate board, which is located above the main PCB. Small high-capacity 22F/100V ceramic capacitors are used in the DC-LINK as well. They are located as close as possible to the power SMD tranzistors. Control logic will be provided by microprocesor STM32G474RE. High resolution timer HRTIM1 is used. The first part of this thesis is devoted to the brief description of BLDC motor construction and driving. Next parts are focused on the design itself.
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The electromobile charging standards overview
Novák, Michal ; Toman, Marek (referee) ; Červinka, Dalibor (advisor)
In this bachelor´s thesis is performed literary research on the topic of charging standards in the area of electric vehicle charging. The work presents the historical standards appearing at the beginning of the development of electric vehicles and their subsequent development. The main part of bachelor´s thesis is the division of charging standards into categories according to the IEC 62196 standard, the division according to the method of charging and the specialized standardized connectors and sockets used. The principle of communication and required hardware during AC charging and DC charging is also described.
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Electronic ballast for power LEDs
Vágner, Richard ; Martiš, Jan (referee) ; Červinka, Dalibor (advisor)
This diploma thesis deals with design of power LED driver. This driver contains electronic ballast circuits, converters, filters and control circuits. Overviews of circuits used in practice are listed along with analysis of power LED and considering options for selecting an appropriate design solution. Thesis describe principle of electroluminescense, creating of the device, its structure and problematics of current source supply. Including detailed overview of converters, ballasts and topologies used in lighting systems with the selection of a suitable solution for the final device with an output power of 50 W. The thesis contains cooling dimensioning for selected power LEDs, input circuit with EMI filter, bridge rectifier, boost converter and flyback converter with pulse transformer.
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AC Cell Electroporation Based on Asymmetrical Waveform
Folprecht, Martin ; Cervinka, Dalibor ; Novotna, Veronika
This paper discusses an application of different waveforms during a cell electroporation process. Latest scientific papers emphasize advantages of asymmetrical waveform applied to tissue. Higher effect of the electroporation process is reached and muscle contractions are less significant. Most highvoltage generators are based on a controlled discharge of storage capacitors. We present a different solution of the generator, where a power part contains a pulse transformer.
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High-Voltage Sources for AC Cell Electroporation
Folprecht, Martin ; Drábek,, Pavel (referee) ; Damec,, Vladislav (referee) ; Červinka, Dalibor (advisor)
This doctoral thesis deals with an application of power converters in experimental medicine. Contemporary knowledge about a relatively new electroporation method and present solutions of power converters used for this method are analyzed at this work. The main part of the thesis is focused on a design and development of a new high-voltage generator proposed to AC electroporation. The last part documents an experimental verification of its function.
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