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1
Content available Analysis of the Possibility of Using Solar Energy to Power Selected Measuring Drives in Agriculture
Kolano J., Stelmach K.
Journal of Ecological Engineering
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2017
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Vol. 18, nr 1
81--89
EN
Mankind’s misgivings caused by the depletion of fossil fuels have accelerated research on obtaining energy from unconventional sources. One such source is the Sun. The present article reviews the possibility of using solar energy, converted in batteries of photovoltaic cells into electricity, in agriculture and farming. It should also be emphasized that it is energy friendly to the environment, whose acquisition on agricultural land, which often lacks access to the power grid, is now legitimate and profitable. This study presents the results of computer simulations in tabular and graphical form, using the PVSYST program, for a pasture water pumping system for watering grazing cattle.
2
Content available Problemy rozruchu układów napędowych współczesnych dźwigów osobowych z silnikiem indukcyjnym
Kolano K., Kolano J.
Maszyny Elektryczne : zeszyty problemowe
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2009
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Nr 82
7-12
EN
Modern lift drive systems are very sophisticated and allow to affect almost any part of the speed curve to achieve desirable level of passengers’ comfort. In this paper selected problems of the starting routine of the passengers elevators have been described. The mathematical model of the lift drive system with 3-phase induction motor has been used to examine both frequency converter and motor parameters. The rollback effect of the car during starting up routine has been described. This method of choosing the sets of parameters is very convenient way of selecting an optimal configuration of frequency converter and the motor to achieve “smooth” start of the lift car . Selected plots of phase current, velocity frequency and voltage curves have been shown and described.
3
Content available Problemy rozruchu układów napędowych prądu przemiennego zasilanych z baterii ogniw fotowoltaicznych
Kolano K., Kolano J.
Maszyny Elektryczne : zeszyty problemowe
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2009
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Nr 82
1-6
EN
Whithin last few years the possibility of constructing autonomic PV low power generators used for electric driving systems feeding emerged. These systems usually 1-phase AC driving systems, may be used in certain household devices (eg. refrigerators, air condition). The amount of energy produced by these uncoventional energy sources depends on current weather conditions. On the basis of mathematical models of AC motors fed by PV systems with buffer energy source computer simulations of transient states during starting were performed. The parameter optimisation of newly elaborated structures of electrical drive systems operating in PV systems was carried about.
4
Content available Problemy doboru algorytmów sterowania układów napędowych współczesnych dźwigów osobowych pracujących grupowo
Kolano K., Kolano J.
Maszyny Elektryczne : zeszyty problemowe
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2007
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Nr 77
11-14
EN
The subject of the following paper is to present controller systems for passengers and goods lifts, that have been applied in Poland untill 1995. There are also shown modern control routines for group elevator systems recently applied in lift controllers. The paper gives an idea about new tendencies of development in the field of modern lift controlling. The paper describes the new ,,Scattered dynamic control routine for systems with group elevators", that has been developed to minimize the passengers waiting time. It is based on continuos performed calculations of waiting time of passengers and choosing the optimal lift in group. The new dynamic control routine can save up to 20% of consumed energy, and reduce up to 30 % the waiting time of passengers.
5
Content available Praktyczna realizacja układów napędowych z trójfazowym silnikiem indukcyjnym zasilanym z baterii ogniw fotowoltaicznych
Kolano K., Kolano J.
Maszyny Elektryczne : zeszyty problemowe
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2007
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Nr 77
5-10
EN
The possibility of constructing autonomic PV low power generators used for electric driving systems feeding emerged within last few years. These systems, usually 1 -phase AC driving systems, may be used in certain household advices. The amount of energy produced by these unconventional energy sources depends on current weather conditions. The paper describes a new method of maximum power point tracking for photovoltaic generator of 3-phase AC drive system without a buffer energy source. The specific quality of this method is assuring the maximum power working point of the generator in an indirect way - by maximization of motor input power. This method makes maximum power point tracking independent of generator cells temperature and insolation, and of any changes of generator output characteristic (voltage-current) curves caused by light cells aging and shading of some cells, when shaded with snow or dirt. Chosen results of laboratory tests are presented in figures.
6
Content available Praktyczna realizacja układów napędowych z jednofazowym silnikiem indukcyjnym zasilanym z baterii ogniw fotowoltaicznych
Kolano J., Kolano K.
Maszyny Elektryczne : zeszyty problemowe
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2006
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Nr 75
223-228
EN
The possibility of constructing autonomic PV low power generators used for electric driving systems feeding emerged within last few years. These systems, usually 1-phase AC driving systems, may be used in certain household advices. The amount of energy produced by these unconventional energy sources depends on current weather conditions. The paper describes a new method of maximum power point tracking for photovoltaic generator of 1-phase AC drive system without a buffer energy source. The specific quality of this method is assuring the maximum power working point of the generator in an indirect way - by maximization of motor input power. This method makes maximum power point tracking independent of generator cells temperature and insolation, and of any changes of generator output characteristic (voltage-current) curves caused by light cells aging and shading of some cells, when shaded with snow or dirt. Chosen results of laboratory tests are presented in figures.
7
Content available Praktyczna realizacja układów napędowych prądu stałego zasilanych z baterii ogniw fotowoltaicznych
Kolano J., Kolano K.
Maszyny Elektryczne : zeszyty problemowe
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2006
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Nr 75
229-234
EN
The possibility of autonomic PV low power generators constructing used for electric driving systems feeding has emerged within last few years. The amount of energy produced by these unconventional energy sources depends on current weather conditions. The paper describes a new method of maximum power point tracking for photovoltaic generator feeding magnetoelectric DC-motor in stand-alone photovoltaic drive system without a buffer energy source. The specific quality of this method is assuring the maximum power working point of the generator in an indirect way - by maximization of motor input power. This method makes maximum power point tracking independent of generator cells temperature and insolation, and of any changes of generator output characteristic (voltage-current) curves caused by light cells aging and shading of some cells, when shaded with snow or dirt. The chosen results of laboratory are been presented in fig.
8
Content available Problemy doboru algorytmów sterowania układów napędowych współczesnych dźwigów osobowych
Kolano K., Kolano J.
Maszyny Elektryczne : zeszyty problemowe
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2005
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Nr 72
33-37
EN
The following paper subject is to present controllers system for passenger and goods lifts, which has been applied in Poland till 1995. There are also shown modern control routines for group elevators systems applied by Lift Service S.A. The paper gives you an idea about new tendencies of development in the field of modern lift controlling. The paper describes basic parameters of new lift controller LS 2020 which has been developed in cooperation the Chair of Electrical Drives of Lublin University of Technology with "Lift Service S.A."
9
Content available remote Optimum methods of feeding electrical drive systems from unconventional energy sources
Kolano J.
Archives of Electrical Engineering
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2002
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Vol. 51, nr 3
297-310
EN
The paper describes a new method of maximum power point tracking for photovoltaic generator feeding magnetoelectric DC-motor in stand-alone photovoltaic drive system without a buffer energy source. The specific quality of this method is assuring the maximum power point of the generator in an indirect way - by maximization of motor input power. This method makes maximum power point tracking independent of generator cells temperature and isolation, and of any changes of generator voltage-current curves by light cells aging and shading of some cells, when shaded with snow or dirt. The rest of the paper describes some results of research concerning the choice of optimum solutions of drive systems fed from unconventional energy sources (wind turbines, photovoltaic modules). Three methods allowing for taking the decision of choice are presented: by means of economic efficiency indices, the pay back method and energy balance method.
PL
W artykule przedstawiono nową metodę śledzenia punktu mocy maksymalnej generatora fotowoltaicznego zasilającego magnetoelektryczny silnik prądu stałego pracujący w autonomicznym systemie fotowoltaicznym. Specyficzną cechą tej metody jest pośrednie zapewnienie pracy systemu w punkcie mocy maksymalnej poprzez maksymalizację mocy wejściowej silnika napędowego. Metoda ta sprawia, że śledzenie tego punktu jest niezależne od nasłonecznienia, temperatury oraz wszelkich zmian charakterystyk wyjściowych generatora PV spowodowanych starzeniem się ogniw oraz zanieczyszczeniem, lub częściowym zacienieniem ich powierzchni. W drugiej części pracy przedstawiono wybrane wyniki badań koncentrujących się na optymalnym wyborze rozwiązań zasilania elektrycznych układów napędowych z niekonwencjonalnych źródeł energii. Przedstawione zostały trzy metody pozwalające podjąć decyzję wyboru odpowiedniego rozwiązania.
10
Content available remote Maximum power point tracking for PV generator feeding different DC motor drive systems
Kolano J., Filipek P., Niechaj M.
Opto-Electronics Review
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2000
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Vol. 8, No. 4
398-401
EN
A simple method of maximum power point tracking for photovoltaic generator feeding magnetoelectric DC-current motor in stand-alone photovoltaic drive system, without a buffer energy source, has been described in this paper. The specific quality of this method is assuring the maximum power working point of the generator in indirect way - by maximisation of motor input power. This method makes maximum power point tracking independent of generator cells temperature and insolation, and of any changes of generator output characteristic (voltage-current) curves caused by light cells aging and shading of some cells shaded with snow or dirt. This method was implemented in a laboratory stand for two similar version (analogue and digital with microcontroller), some differing in a tracking method, and its results have been presented and compared herein.
11
Content available remote Wybór optymalnej struktury napędu elektrycznego
Kolano J., Horodecki A., Ali Z.
Maszyny Elektryczne : zeszyty problemowe
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1999
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Nr 58
47-48
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