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Independent Traction Drive with Low-Voltage Induction Machine
Matucha, Tomáš ; Skalický, Jiří (advisor)
This work deals with creation of an exact mathematical model of a traction drive with low-voltage induction machine (28 V) which is fed from accumulators. This model was developed in MATLAB – Simulink and consists of induction machine model, inverter model and load model. Vector Control was added to models connected together. This complex model allows considering many effects into simulations. These effects are commonly neglected, although they have significant influence on drive behaviour, especially by using low-voltage machine. It is impact of magnetic circuit saturation, impact of temperature and skin effect on winding resistance, impact of inverter nonlinearities such as on-state voltage drops on switching elements, dead times and transistors switching times. The attention was paid to determination of losses in drive parts. The correctness of the model was verified at laboratory workplace established for this purpose. The laboratory drive can be controlled by a microprocessor or by using MATLAB and dSPACE application. The influence of compensations of inverter nonlinearities and DC-link voltage ripple on higher harmonics of inverter output currents was analyzed. Furthermore, the control, which decreased resistive losses, was solved.
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Modeling and simulation of EC motor vector control in Simulink environment
Hořava, Jan ; Szabó, István (referee) ; Toman, Jiří (advisor)
The main goal of my work is the electrically commutated motor with the vector control’s application in the environment of Matlab – Simulink. The theoretical preamble of this document is dedicated to the physical construction of the EC motors. The most common methods are described in the following text – namely it is scalar control, direct torque control and vector control. The conclusion of this work includes the description and analyse of the single parts of a created model of concrete EC motor with the vector control, and simulations results’ evaluation.
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Control of three-phase asynchronous motor
Nekvapil, Jan ; Huták, Petr (referee) ; Klíma, Bohumil (advisor)
This theses concern proposal and implementation asynchronous motor control algorithm in the processor DSP56F807 from the manufacturer Freescale. The complex design of applicable control algorithm and suitable interconnection with processor and outer component is solved in this work. Integral part is also choosing of suitable power elements of inverter and sensors.
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Control of asynchronous motor
Semerád, Jiří ; Pazdera, Ivo (referee) ; Běloušek, Josef (advisor)
The thesis is focused on asynchronous motors. The first part deals with construction, principles of function and speed-torque characteristics of the motors. Furthermore, a mathematical model of an asynchronous motor in Matlab-Simulink program is created in order to make a possibility to test any type of motor and check all parameters, which is more economical than testing real objects. The second part of the work contains an overall summary of asynchronous motor control methods.
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Algorithms for the Control of the Induction Motor
Hundák, Vladimír ; Běloušek, Radim (referee) ; Patočka, Miroslav (advisor)
Hlavným cieľom tejto práce je vytvorenie simulácií rôznych algoritmov riadenia asynchrónneho motora a vzájomné porovnanie ich vlastností. Zaoberá sa taktiež možnosťami konfigurácie náhradného zapojenia na T-článok, -článok a -článok. Obsahuje jednak teoretický rozbor, a taktiež aj simulácie jednotlivých spôsobov riadenia spolu s podrobným návodom na ich realizáciu. Celkovo budú vykonané 3 simulácie – simulácia vektorového riadenia s orientáciou na rotorový tok, vektorového riadenia s orientáciou na statorový tok a simulácia takzvaného prirodzeného riadenia. Ide o úplne nový typ riadenia, ktorého autorom je vedúci tejto diplomovej práce. Jeho simulácia bola vôbec prvým pokusom o funkčnú realizáciu tohto typu riadenia.
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Control unit for BLDC motor
Krejčí, Ondřej ; Cipín, Radoslav (referee) ; Procházka, Petr (advisor)
This master„s thesis elaborates with EC motors problematic. There are described essential features of brushless DC motors, their principles, construction and methods for rotor position detection. There are mentioned commonly used control algorithms of EC motors including theory of three-phase convertors. This thesis also contains a complex design of the universal convertor for EC motor and its practical implementation. Power parts losses calculation, heat-sink calculation and measurements at the convertor prototype are also described in this thesis.
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Modern Algorithms of AC Servo-drives Control
Hrnčárek, Martin ; Blaha, Petr (referee) ; Václavek, Pavel (advisor)
This master thesis deals with the modern algorithms of the asynchronous induction machine and permanent magnet induction machine. It focuses at vector control, direct torque control and input-output feedback linearization. It also describes a library creation and its usages in the Matlab – Simulink environment. The final part of this thesis contains an implementation of chosen algorithms on the DSC Freescale 56F800E family.
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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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