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Parameter Identification of Permanent Magnet Synchronous Motor
Veselý, Ivo ; Bobál, Vladimír (referee) ; Janeček, Eduard (referee) ; Blaha, Petr (advisor)
The purpose of this dissertation is to design identification methods for identifying a permanent magnet synchronous motor. The whole identification and motor control is carried out in d-q coordinates, and the program used for processing and control was the matlab simulink, together with the real time platform DSpace. The work focuses on two main areas of identification, off-line identification and on-line identification. For offline identification the frequency analysis was used with the lock rotor test to get three main parameters. They are the quadrature and direct inductances and stator resistance. In the online mode, the identified parameters were extended to magnet flux _f identified by MRAS method. The remaining parameters were again identified by frequency analysis, which was adapted into online mode, and simultaneously applied to the identification of several part in one time. The next method is Newton method, which is used for estimating stator resistance of the motor, without the need to apply any signal.
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Control of the Electromechanical System with a Linear Motor
Judinyová, Katarína ; Blaha, Petr (referee) ; Václavek, Pavel (advisor)
The submitted Master’s thesis deals with the general principle of the electric drives’ functioning and with the construction of a synchronous electric motor. A comparison of a linear drive and a rotary drive with rack and pinion system is provided, as well as an overview of common type linear drives. A mathematical model of a rotary synchronous motor, the Clark’s and Park’s transformation and the principle of vector control is explained. A method of the linear parameters’ conversion to the rotary equivalents is demonstrated. A block diagram to motor control is designed. The control quality is tested by various criteria. Lastly, there is a simulation provided on how the changes of motor’s parameters affect the control quality.
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Permanent magnet synchronous motor control with respect to simplicity of the realization
Vybíral, Ondřej ; Pohl, Lukáš (referee) ; Blaha, Petr (advisor)
This thesis deals with the problem of control of permanent magnet synchronous motor. The introduction describes division of motors according to the structure and with the stress on the BLDC motor. Control methods are also discussed there including clarification of concepts related to the control itself. The advantages and disadvantages of individual methods are compared. Six-step commutation was chosen based on the simple implementation criterion. The work includes Simulink simulation, simulating the BLDC motor LINIX 45ZWN24-40 controlled by six-step commutation. The thesis contains a comparison of simulated motor speeds at various control parameters. The conclusion of the thesis deals with the possibilities for subsequent implementation.
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Control of hot air tunnel
Šimurda, Jan ; Buchta, Luděk (referee) ; Blaha, Petr (advisor)
This bachelor thesis is dealing with the reconstruction of hot-air tunnel model for ma- nagement using CompactRIO system from National Instruments company. For a com- munication with the tunnel has been designed a user interface that guides a user through the system identification and controller design, which is testable as a simulation and then on a real device. The result of this thesis is to create a school task implementing the particular procedures.
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DC Drive Optimal Control
Regent, David ; Blaha, Petr (referee) ; Václavek, Pavel (advisor)
Master‘s thesis contains the issue of positional control of the separate exciting DC motor. In the work is the creation of mathematical model. Next theme of document are questions of optimal control and method of solution LQ controler. The work is also a proposal state observer.
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Inter turn short-circuit detection in vector controlled PMS motor using AI
Zezula, Lukáš ; Kozovský, Matúš (referee) ; Blaha, Petr (advisor)
This thesis deals with the diagnostics of inter turn faults in a vector controlled synchronous motor with permanent magnets. Inter turn faults are detected by the pretrained convolution neural network GoogLeNet from adequately preprocessed signals of phase currents, inverter voltages and electrical angular velocity. Signal preprocesing includes, but is not limited to digital filtration, resampling and Wavelet transform. For the purpose of network training a drive system model is created, capable of simulating inter turn faults. The network is then trained on the simulated data and later validated with data measured on a real drive system, capable of emulating faults. The results of the diagnostics, together with the main problems are presented in the conclusion.
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Artificial intelligence on nVIDIA Jetson platform
Batelka, Lukáš ; Kozovský, Matúš (referee) ; Blaha, Petr (advisor)
The aim of this bachelor thesis is to design, train and implement an artificial neural network in an NVIDIA Jetson Nano embedded device. The first part of the thesis describes the current state of the art of implementing artificial intelligence in embedded devices. The following section describes the tools for developing artificial neural networks and the possibilities of implementing them in a Jetson Nano device. These tools are further used in the thesis to create and train an artificial neural network to detect a fault in preprocessed measurement data on a synchronous electric motor. Finally, the optimization of the trained neural network is described. The achieved results are summarized in the conclusion of the paper.
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Analysis of PMSM motor inverter behaviour
Buchal, David ; Kozovský, Matúš (referee) ; Blaha, Petr (advisor)
This master‘s thesis deals with the design of a software solution for the AURIX TC234 microcontroller by Infineon Technologies which enables a user to start sampling of the signal at any required moment. A sampling time should be set to the lowest possible value. This solution is then added to the application which is used for a field oriented control of the brushless direct current motor. The obtained values can be further used, for example, for analyzing the waveform of motor currents from which it might be possible to determine the condition of the transistor inverter.
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