Analýza optimalizace parametrů vektorového řízení třífázového indukčního motoru pomocí evolučního algoritmu

In this paper, the impact of regulators set and their types for the characteristic of rotational speed of induction motor was researched.. The evolutionary algorithm was used as optimization tool. Results were verified with using MATLAB/Simulink.V tomto příspěvku je popsán výzkum dopadu sady regulátorů a jejich typů na úhlovou rychlost indukčního motoru. Jako optimalizační nástroj byl použit evoluční algoritmus Výsledky byly ověřeny pomocí simulačního software MATLAB/Simulink

Metoda optimální syntézy adaptivního pid regulátoru uzavřeného regulovaného systému s využitím evolučního algoritmu

This work suggests a method of searching optimal adaptive of controller PID in closed system using evolutionary algorithm. The object with well-known characteristics is controlled by a signal from the controller. Its’ assumed answer step change of system will be well-known desirable time function of the basis we can characterize, regulate, answer of system depending on controller’s PID parameters, and it calculates adaptive of this controller. Adaptive makes possible to obtain characteristics, which will be similar to assumed characteristics presented by time function. The answer of researched controller’s system will be characterized by the best desirable quality index.V příspěvku je navržena metoda optimální syntézy adaptivního PID regulátoru uzavřeného regulovaného systému s využitím evolučních algoritmů. Objekt s dobře známou charakteristikou je řízen prostřednictvím akční veličiny z regulátoru. Adaptivní regulace umožňuje získat charakteristiky, které jsou velmi podobné předpokládaným časovým průběhům. Zkoumaný regulátor je charakterizován požadovaným indexem kvality

Analysis of Parametric Optimization of Field-Oriented Control of 3-Phase Induction Motor with Using Evolutionary Algorithm

In this paper, the impact of regulators set and their types for the characteristic of rotational speed of induction motor was researched.. The evolutionary algorithm was used as optimization tool. Results were verified with using MATLAB/Simulink

Projektowanie układu sterowania oraz identyfikacja parametrów silnika indukcyjnego z zastosowaniem algorytów ewolucyjnych i różnych kryteriów jakości praca doktorska /

Tyt. z ekranu tytułowego.Praca doktorska. Akademia Górniczo-Hutnicza im. Stanisława Staszica (Kraków), 2007.Bibliogr.Dostępna także w wersji drukowanej.Tryb dostępu: Internet.Przegląd optymalizacji układu napędowego z silnikiem indukcyjnym, metod identyfikacji parametrów silnika indukcyjnego, sterowania silnikiem indukcyjnym, zastosowana metoda optymalizacyjna, schemat blokowy, zasada działania AE, reprezentacja zmiennopozycyjna, operatory ewolucyjne, krzyżowanie zmiennopozycyjne, mutacja zmiennopozycyjna zwykła, postępowa, metoda ruletki, selekcja deterministyczna, turniej, zastosowanie dwóch rodzajów selekcji, funkcja oceny, optymalizacja wielokryterialna w sensie Pareto dla dwóch wskaźników jakości, trzech i więcej wskaźników jakości, rozpychanie, nie korzystająca z paretooptymalności, zawężanie zakresów, metoda wielokryterialnej identyfikacji parametrów silnika indukcyjnego na podstawie charakterystyk dynamicznych z wykorzystaniem algorytmu ewolucyjnego, preliminaria, funkcja oceny, założenia upraszczające, model matematyczny w układzie współrzędnych ortogonalnych 0dq wirujących z prędkością synchroniczną ω metody numeryczne wykorzystane w programach ewolucyjnych, obliczanie wartości skutecznej, identyfikacja parametrów silnika, parametry, charakterystyki rozruchowe, identyfikacja przy wykorzystaniu znormalizowanego wektora wag, wielokryterialności, porównanie metody identyfikacji wielokryterialnej w sensie Pareto oraz wielokryterialnej sprowadzanej do jednego kryterium za pomocą znormalizowanego wektora wag parametrów silnika, na podstawie charakterystyk statycznych, charakterystyki stanu ustalonego, identyfikacja parametrów maszyny indukcyjnej, wielokryterialność sprowadzana do przypadku jednokryterialnego, silników Sg90L-6, s211e44 na podstawie charakterystyk pomiarowych, weryfikacja zidentyfikowanych modeli, dobór nastaw regulatorów w układzie sterowania polowo-zorientowanego z silnikami, dobór nastaw regulatorów w układach, w układzie napędowym, weryfikacja otrzymanych rezultató

Evaluation of the impact of meteorological conditions on the amount of air pollution in Krakow

Abstract. The publication presents an assessment of the impact of meteorological conditions on air quality in a given location. The subject matter of the work is related to problem-review issues in the field of environmental protection and energy management. The publication draws attention to the fact that despite several decades of ecological monitoring of air pollution, only in recent years attention has been paid to the scale of air pollution problem. The study examined the relationship between meteorological elements (wind velocity, relative humidity on the amount of air pollution immissions. Significant impact of precipitation, atmospheric pressure and thermal braking layer was indicated. The possibilities of air quality improvement were presented based on the measurement data concerning the immission of impurities

Analysis of the suitability of using the selected wind turbine blades for wind power appliances based on numerical analyses

The aim of this study was a comparative analysis of the suitability of the use of airfoil for wind power. Based on numerical analyses and analytical methods, information on the power factor was obtained. The analyses were carried out for the wind turbine blades and rotors of a vertical axis wind turbine. The tests were performed for the constructed profile and compared with the profile DU 06-W-200 used in the construction of a wind turbine rotors. A vertical axis wind turbine model equipped with designed blade profiles was prepared. The main predicted purpose of the device is to supply electricity to the household. The blade profile models were prepared and then a numerical analysis was performed using the CFD application. The obtained results for given wind speeds and types of profiles were compared with each other. The conducted research allowed to determine the sense of applying the unaudited profile based on the determined value of wind turbine power coefficient. Studies have shown that the accurate preparation of the optimal rotor blade with respect to flow of air stream strongly influences the characteristics of the wind turbine

Analysis of the suitability of using the selected wind turbine blades for wind power appliances based on numerical analyses

The aim of this study was a comparative analysis of the suitability of the use of airfoil for wind power. Based on numerical analyses and analytical methods, information on the power factor was obtained. The analyses were carried out for the wind turbine blades and rotors of a vertical axis wind turbine. The tests were performed for the constructed profile and compared with the profile DU 06-W-200 used in the construction of a wind turbine rotors. A vertical axis wind turbine model equipped with designed blade profiles was prepared. The main predicted purpose of the device is to supply electricity to the household. The blade profile models were prepared and then a numerical analysis was performed using the CFD application. The obtained results for given wind speeds and types of profiles were compared with each other. The conducted research allowed to determine the sense of applying the unaudited profile based on the determined value of wind turbine power coefficient. Studies have shown that the accurate preparation of the optimal rotor blade with respect to flow of air stream strongly influences the characteristics of the wind turbine

Testing the performance characteristics of specific profiles for applications in wind turbines

The publication presents the results of aerodynamic characteristics of selected profile blades for applications in wind turbines. Considering the potential of energy resources and investors’ preferences, the amount of energy produced in wind farms in the total amount of electricity generated will be systematically growing and probably, in the next few years, wind energy will be the first in the field of electricity production from all types of power plants. Harnessing the power of moving air masses is now a global phenomenon. Rotor wheel converts wind energy into mechanical energy when using blades with chosen shape and oriented in the terms of the optimum performance. The aim of the measurements was to determine the impact of blade shape and blade angle of attack on the efficiency of conversion of wind energy into mechanical energy on the rotor wheel. The obtained power coefficients were presented as results

In vitro wound dressing stack model as a first step to evaluate the behavior of dressing materials in wound bed - an assessment of mass transport phenomena in hydrogel wound dressings

Wound dressings when applied are in contact with wound exudates in vivo or with acceptor fluid when testing drug release from wound dressing in vitro. Therefore, the assessment of bidirectional mass transport phenomena in dressing after application on the substrate is important but has never been addressed in this context. For this reason, an in vitro wound dressing stack model was developed and implemented in the 3D printed holder. The stack was imaged using magnetic resonance imaging, i.e., relaxometric imaging was performed by means of T(2) relaxation time and signal amplitude 1D profiles across the wound stack. As a substrate, fetal bovine serum or propylene glycol were used to simulate in vivo or in vitro cases. Multi-exponential analysis of the spatially resolved magnetic resonance signal enabled to distinguish components originating from water and propylene glycol in various environments. The spatiotemporal evolution of these components was assessed. The components were related to mass transport (water, propylene glycol) in the dressing/substrate system and subsequent changes of physicochemical properties of the dressing and adjacent substrate. Sharp changes in spatial profiles were detected and identified as moving fronts. It can be concluded that: (1) An attempt to assess mass transport phenomena was carried out revealing the spatial structure of the wound dressing in terms of moving fronts and corresponding layers; (2) Moving fronts, layers and their temporal evolution originated from bidirectional mass transport between wound dressing and substrate. The setup can be further applied to dressings containing drugs