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Losses Minimizing Control of AC Drives
Džama, Igor ; Otava, Lukáš (referee) ; Václavek, Pavel (advisor)
This semestral thesis deals with issues of controll of alternating current drives of reluctance-synchronous type with interest on energy efficient controll. Thist hesis contains description of permanet magnet synchronous machine with reluctance moment and vector controll. On the model of the motor are than designed algorims tried. Algoritms are than between each other and algorithm of of controll of synchronous machine withount reluctance moment compared.
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Digital techniques in laboratory
Harvánek, Michal ; Mego, Roman (referee) ; Frýza, Tomáš (advisor)
The result of this project are complete proposals labs to demonstrate theoretical knowledge in the field of synchronous and asynchronous counters, state machines, combinational circuits and special hazards occurring in combinational logic functions. The project utilized educational system from RC Didactic, whose main advantage is the illustrative proof of the logic circuits and a simple computer application utilized in the analysis of digital and analog circuits. Designe tasks can be involved in a two-hour time limit labs of BICT course.
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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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Design of permanent magnet synchronous motor
Pavláček, Jan ; Vítek, Ondřej (referee) ; Huzlík, Rostislav (advisor)
This thesis is bent proposal synchronic motor with permanent magnets. Here are described characteristic synchronic motors, permanent magnets and possibilites construction. This thesis is sorted from common description, feature and principle function. Here are also mentioned benefits and disadvantages synchronic motors with permanent magnets. Main volume of work is proposal synchronic motor with various modifications. Proposal is realized in program Ansys Maxwell (modulus RMxpert). Engine data are entered from program Excel, where is state full calculation input and output parameters. Value is tested from [11]. Aim those work are various modification synchronic motor and his analysis.
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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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Simulation of synchronous generator at insular operation
Kořistka, Petr ; Ondrůšek, Čestmír (referee) ; Huzlík, Rostislav (advisor)
This work deals with a creation of model of synchronous generator in programmes such as Simplorer and Maxwell, and also its operation in an insular operation. In the paper are described Maxwells equations for solving electromagnetic field, theory of synchronous machine, further are briefly described a simulation programmes which were used. In the next part of work is described production of geometric model of generator and its later electromagnetic analysis in the Maxwell programmes environment. For a simulation of generators operation in insular operation were chosen 2 cases. The first case simulates an operation of generator at the step change of residence of R-L load, the second simulation an automatic regulation of voltage at the step change of residence of R-L load. The simulations were running in the Simplorer programme and at link simulation Maxwell Simplorer programmes.
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Concept of linear motors measurement workplace
Knobloch, Jan ; Červinka, Dalibor (referee) ; Klíma, Bohumil (advisor)
Master’s thesis handles about measurement on linear motors. Acts about set of two linear machines on one rail. One is motor and second is load. Thesis paies their mathematical description, control and measurement. It’s made measurement of the linear motor load characteristic. Next measurement have to do with losses in the converter. Is chosen measuring instrument t for measurement during working cycle. During working cycle has determine power eciency of entire drive.
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The electronic commutation motor
Bláha, Martin ; Huzlík, Rostislav (referee) ; Melichar, Petr (advisor)
This work discusses about nowadays problematic of the electronic comutation motors.This work also describes the opportunity of electronic control of these motors. The result of this work is realization of electronic control circuit from discreet components. There also are mentioned is proposal of electronic control board from SMD components. This control board include temperature control with ventilator switching , commutation logic, PWM speed control. In the last part of this paper are results of evaluation measurements of EC motor.
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