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Podzespoły hydrokinetyczne w dobie pojazdów elektrycznych

Musiałek Ireneusz, Kęsy Andrzej

Napędy i Sterowanie

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2023

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R. 25, nr 3

60--66

PL

Układ przeniesienia napędu maszyn to podzespoły mechaniczne mieszczące się między silnikiem napędowym a mechanizmem roboczym. Zadaniem układu przeniesienia napędu jest dostosowanie charakterystyki użytego silnika napędowego do wymogów ruchu maszyny. Dla pojazdów zadania te obejmują: łagodne ruszanie z miejsca i zatrzymywanie się, jazdę w ruchu miejskim oraz jazdę po autostradach.

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Modelling of Drive System Operation of a Wind Power Plant

Osowski Karol, Iwanicki Wojciech, Kotliński Jarosław, Musiałek Ireneusz, Kęsy Andrzej, Kęsy Zbigniew

Advances in Science and Technology. Research Journal

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2023

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Vol. 17, no 2

71--89

EN

The article presents experimental and theoretical studies concerning the possibility of using a controlled hydrodynamic clutch in a wind power plant’s drive system. The hydrodynamic clutch is controlled by changing the distance between the hydrodynamic clutch rotors. The control system is supposed to maintain a constant angular velocity of the electric generator shaft. The considered method of control has not been used so far in power plant's drive systems. The advantages of using a controlled hydrodynamic clutch is simple structure, high durability and low weight of the entire drive system. The equations of the mathematical model for the drive system are formulated on the basis of: the balance of torques and the equations of the hydrodynamic clutch with retractable rotors. The equations are based on the one-dimensional flow of the working fluid along the mean line of the stream. The model calculations are conducted numerically. In order to be able to determine the coefficients of the mathematical model, experimental research is conducted on a test bench designed specifically for this purpose. The research determines how the rotation direction and size of the gap between rotors influences the torque transferred by the hydrodynamic clutch, for selected values of the clutch’s filling degree and the working fluid’s temperature. On the basis of the model calculations results it was determined that a hydrodynamic clutch controlled by increasing the distance between rotors may be successfully used in drive systems of wind power plants to maintain a constant angular velocity of the electric generator shaft.

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Experimental Research Concerning Hydrodynamic Clutches Controlled by Increasing Distance Between Rotors

Iwanicki Wojciech, Musiałek Ireneusz, Osowski Karol, Olszak Artur, Kęsy Zbigniew, Kęsy Andrzej

Advances in Science and Technology. Research Journal

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2021

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Vol. 15, no 1

218--229

EN

The article describes the results of experimental research concerning a prototypical hydrodynamic clutch controlled via changes in flow rates of the working fluid. The aim of the research was to collect experimental data to confirm the practical possibility of using such a control method of the hydrodynamic clutch and to compare this with other currently used methods. A change in flow rate of the working fluid was obtained by increasing the distance between rotors. The experimental research was conducted on a test rig built specifically for this purpose. On the basis of the research, the influence of the clutch filling level, the direction of rotation and the temperature of the working fluid on the clutch torque were determined. The experimental research shows that the transferred torque is significantly influenced by the width of the gap between rotors, the rotational speed of the input shaft, the clutch filling degree and the temperature of the working fluid. Thus, these values may be used to control the torque transferred by the hydrodynamic clutch. The temperature of the working fluid is not recommended as a control value due to the fact that it is dependent on the working conditions of the hydrodynamic clutch. On the basis of the test results, it was proven that hydrodynamic clutches controlled by increasing the distance between rotors can be successfully used, for example, in drive systems of wind farms.

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Badanie właściwości mechanicznych materiałów stosowanych w technologii FDM

Snopczyński Marcin, Kotliński Jarosław, Musiałek Ireneusz

Mechanik

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2019

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R. 92, nr 4

285--287

PL

Wraz z postępem technologii druku 3D rozwijane są nowe materiały stosowane do druku. W praktyce zdarza się, że konstruktor nie dysponuje wszystkimi danymi o materiale, którego chce użyć. W artykule przedstawiono wyniki badań wytrzymałości na rozciąganie próbek drukowanych metodą FDM. Drukowanie 3D metodą FDM jest rozpowszechnione, jednak właściwości stosowanych w tej metodzie materiałów nadal nie są w pełni poznane. Celem badań było uzyskanie informacji o parametrach wytrzymałościowych stanowiących podstawę dalszych analiz.

EN

With the development of 3D printing technology, there is a development in the use of new printing materials. In practice, it often happens that the constructor does not have full data about the material that he wants to use. The article presents the results of tests of tensile strength of samples printed using the FDM method. 3D printing using the FDM method is widespread, however, the properties of the materials used in this method are still not fully understood. The aim of the research was to obtain information on strength parameters that form the basis for further analyzes.