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Realization of the microprocessor driven small AC inverter
Picmaus, Michal ; Červinka, Dalibor (referee) ; Knobloch, Jan (advisor)
The work deals with a design of performance part of converter controlled by micro for an asynchronal engine. In the design there is dimensioning of performance part, spare parts and a design of a panel including a design of connected boundary. The design recons even with connection of direct engine to the convertor. The convertor is designed for a laboratory where it will serve to teaching purposes and experiments.
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Electric bike with a combustion-engine-powered generator
Mička, Dominik ; Červinka, Dalibor (referee) ; Vorel, Pavel (advisor)
A conceptual design and realization of a motor bike using combustion engine and electrical power transfer is the objective of this master´s thesis. Control strategy that allows combustion engine to reach maximal efficiency cooperating with wide range speed and torque operating area electromotor was created. All function blocks were realized. Also hardware of all needed parts was developed. The last part was a design and debugging of control software. Finally the functionality was documented by test drives and measurements.
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Drive design for Foil Winding Machine
Koncer, Adam ; Červinka, Dalibor (referee) ; Klíma, Bohumil (advisor)
Master’s thesis deals with the realization of motion drives for the foil winding machine. Drives for this machine are supplied by company Siemens. Whole project is made in cooperation with that company. The reader gets a comprehensive overview of the product group SINAMICS that will be used for the realization of drives in this machine. Thesis describes the selection of individual drive components, their control and regulation. Measurement and evaluation of results foil winding machine is made in the last chapter of this thesis.
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Subwoofer for PA applications
Tylich, Ondřej ; Červinka, Dalibor (referee) ; Martiš, Jan (advisor)
The content of the bachelor´s thesis is theoretical knowledge in the field of loudspeaker baffles, their construction and design of the subwoofer according to the assignment. The work describes various types of used loudspeaker baffles. Their properties are defined for each of them. Some of the simulation programs are used for proper design. A suitable speaker is selected for the subwoofer application in PA technology. The parameters of the selected loudspeaker are verified by measurement. Based on these parameters, the design of the selected loudspeaker is calculated. Furthermore, the thesis addresses deals with the complete design process of the baffle for the selected speaker and its subsequent construction. After the construction, the port is tuned to the selected parameters. The resulting parameters of the designed subwoofer are verified by measuring the amplitude and frequency characteristics.
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Three-phase converter for synchronous servomotors
Perout, Miroslav ; Folprecht, Martin (referee) ; Červinka, Dalibor (advisor)
This diploma thesis is dealing with the design of a DC / AC converter for the control of PMSM motors. In the first step, the type of motor and the possibilities of sensing the position of the rotor are described. Subsequently, the power section is designed and the losses, heating, and approximate efficiency of the inverter are calculated. In the following step, the processor is selected and individual communication and protection circuits are designed. At the same time, control algorithms are analyzed. The last part is describing the implementation of the PCB and the inverter as a whole.
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Control of excitation of synchronous generator
Horník, Vincenc ; Červinka, Dalibor (referee) ; Huták, Petr (advisor)
The main focus of the work is to create the optimal design of the reconstruction of synchronous generator excitation system of small hydro power plants with regard to the economical and technical performance, description of synchronous generator excitation, possible technical solutions to the reconstruction of excitation systems and their driving.
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DC/DC step-up converter with synchronous rectifier
Pospíšilík, Vojtěch ; Feiler, Zdeněk (referee) ; Červinka, Dalibor (advisor)
In the bachelor’s thesis we will deal with the design, optimization and subsequent build of the increasing DC converter with synchronous rectifier. Experimentally we find parameters for which we will make the design. Then we choose a suitable control circuit and calculate the parameters of the converter output elements, which assign specific components. After that we will design the printed circuit board, complete and we will renew the converter.
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Plasma speaker - audio modulated electric arc
Klein, Ondřej ; Červinka, Dalibor (referee) ; Martiš, Jan (advisor)
The bachelor thesis deals with design and realization of electric arc modulated by audio signal. It is also known as plasma speaker. Absence of any mechanical components gives membranless speaker no frequency limitation. The design consist of single circuits as power sources for power and control section, control electronics, which modulates the signal, and power section, which reproduce signal in form of sound.
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