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The Models of Power Lines for PLC Data Communication Systems
Fajkus, Petr ; Mišurec, Jiří (referee) ; Lázničková, Ilona (advisor)
Bachelor's thesis is focused on the issue of data communications over power lines. This technology is known as PLC (Power Line Communication). Wider deployment of this technology into practice at present prevents a number of shortcomings. Main problems are disturbance useful signal on power lines, radiation interference, small reach of useful signal and elements of energy network, which affect the transmission. In the analysis of sub-problems, it appears that it is appropriate to have a computer power line model, allowing a computer simulation of data communication over power line. It is necessary to combine two different, conflicting requirements. Power lines are not primarily intended for data communication, and data lines are not designed for the transmission of electricity. Both types of line are described the same primary parameters, but they operate in completely different modes. This thesis examines these modes and possible models of power and data lines in terms of data communication. The main part is devoted to the draft power line model for data communication and computer verification of the functionality of the new proposed model.
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Mathematical model of synchronous motor width permanent magnet
Fajkus, Petr ; Klíma, Bohumil (referee) ; Huták, Petr (advisor)
The work is focused on the design of synchronous motor control with field weakening possibility. At present synchronous motors used in many applications. Often is used synchronous motor with permanent magnets. This type of motor may have different transverse and axial inductance. In most cases it is desirable to design the engine using a computer model. Therefore the synchronous motor described mathematically in order to create the model of motor. At work is also crated model of synchronous motor control. The control is designed for the highest possible speed range. Therefore, the motor control is consist of two parts. Speed is controlled by voltage in the first part. In the second part speed is controlled by field weakening. Everything is created and simulated in a computer program MATLAB-SIMULINK.
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The Models of Power Lines for PLC Data Communication Systems
Fajkus, Petr ; Mišurec, Jiří (referee) ; Lázničková, Ilona (advisor)
Bachelor's thesis is focused on the issue of data communications over power lines. This technology is known as PLC (Power Line Communication). Wider deployment of this technology into practice at present prevents a number of shortcomings. Main problems are disturbance useful signal on power lines, radiation interference, small reach of useful signal and elements of energy network, which affect the transmission. In the analysis of sub-problems, it appears that it is appropriate to have a computer power line model, allowing a computer simulation of data communication over power line. It is necessary to combine two different, conflicting requirements. Power lines are not primarily intended for data communication, and data lines are not designed for the transmission of electricity. Both types of line are described the same primary parameters, but they operate in completely different modes. This thesis examines these modes and possible models of power and data lines in terms of data communication. The main part is devoted to the draft power line model for data communication and computer verification of the functionality of the new proposed model.
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Mathematical model of synchronous motor width permanent magnet
Fajkus, Petr ; Klíma, Bohumil (referee) ; Huták, Petr (advisor)
The work is focused on the design of synchronous motor control with field weakening possibility. At present synchronous motors used in many applications. Often is used synchronous motor with permanent magnets. This type of motor may have different transverse and axial inductance. In most cases it is desirable to design the engine using a computer model. Therefore the synchronous motor described mathematically in order to create the model of motor. At work is also crated model of synchronous motor control. The control is designed for the highest possible speed range. Therefore, the motor control is consist of two parts. Speed is controlled by voltage in the first part. In the second part speed is controlled by field weakening. Everything is created and simulated in a computer program MATLAB-SIMULINK.
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