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Wyszukujesz frazę "Dobrzycki, A." wg kryterium: Autor

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Influence of equipment modernization to parameters of electricity - case study
    Autorzy:
    Dobrzycki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/97473.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    power quality
    analysis of the electrical load changes
    modernization of machinery
    Opis:
    This paper is concerned with the impact of modernization of the machinery on parameters of of electricity for example the aluminum industry company. Examined was due to changes in factory equipment for power energy parameters. Was shown the selected parameters for the state before and after the upgrade. Statistical analysis were carried out. It was shown that the upgrading its machinery has a positive impact on the power supply parameters. It has been shown that, despite a substantial increase in installed power has decreased power consumption due to power factor correction. In addition, showed an increase in uneven power consumption.
    Źródło:
    Computer Applications in Electrical Engineering; 2013, 11; 440-446
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of computer equipment for power demand and consumption of electricity in companies
    Autorzy:
    Dobrzycki, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/97632.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    electricity consumption
    power demand
    computers
    energy balance
    Opis:
    This paper concerns the analysis of power and energy consumption of computer workstations in companies. The following cases were analyzed: the position with the desktop computer the position with mobile workstation and the position with the laptop. We compared demanded power and electricity consumption of such posts pointed out advantages and disadvantages of the use of the above types of computer workstations in the context technical (electricity use) and economically.
    Źródło:
    Computer Applications in Electrical Engineering; 2014, 12; 246-253
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Acoustic emission signals associated with prebreakdown state in air high voltage insulating systems
    Autorzy:
    Dobrzycki, A.
    Opydo, W.
    Zakrzewski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/97311.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    high voltage insulating system
    breakdown voltage
    acoustic emission method
    dielectric coatings
    Opis:
    The paper presents the method of acoustic emission (AE) in the study of the state of insulation systems with air as the high-voltage insulation. The tested object was a planar system of electrodes made of aluminum. In addition, the analysis of AE signals and the impact on these signals the presence of dielectric coating on the electrode surfaces of aluminum was tested. We examined the influence of saturation (seal) these coatings on the dielectric strength of the insulation system. The study was conducted at an air pressure values 1·105, 3·105 and 5·105 Pa. The strength of the electrical systems were tested at alternating voltage with a frequency of 50 Hz. Noted pros and cons of using the method of EA in the context of the assessment of high-voltage electric insulation devices. The presented results confirm the possibility of using acoustic emission method, not only for identifying vulnerable areas, but also to predict the time of of further use of high voltage device.
    Źródło:
    Computer Applications in Electrical Engineering; 2015, 13; 278-286
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Minimizing the number of signal sources in 802.11 wireless networks
    Autorzy:
    Dobrzycki, A.
    Skórcz, K
    Tomczewski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/97377.pdf
    Data publikacji:
    2012
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    wireless networks
    signal source
    Monte Carlo method
    Opis:
    The paper presents a computer program algorithm developed in order to minimize the number of signal sources (access points) in wireless networks of the 802.11 standard with the use of the Monte Carlo method. It includes an objective function of economic character and a set of technical limitations. The paper covers also the basics of determining the signal level within the 802.11 network range with the use of the directives provided in recommendation ITU-R P.1238-6. The algorithm developed was implemented in a .NET environment (C# language). Sample calculations were performed, the results were discussed and the directions for further development related to the present subject matter were indicated.
    Źródło:
    Computer Applications in Electrical Engineering; 2012, 10; 402-415
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The concept of algorithm for optimal selection of power and the number of generators in hybrid solar–wind power plant
    Autorzy:
    Dobrzycki, A.
    Kamiński, J.
    Pietracho, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/97209.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    optimization of the hybrid power plant
    energy storage
    minimizing the fluctuations of power
    photovoltaics
    wind power plant
    Opis:
    The paper presents the power–split algorithm of hybrid power plant. The article focuses particularly on the optimal, in order to ensure the best opportunities for regulation, in a hybrid system. The document presents the concept of the algorithm selection quantity of generators and division of power individual generators. The proposed algorithm takes into account the use of energy storage as part of the buffer, reducing fluctuations generated power. The results of calculations and comparison for a couple of accepted variants for the sample location are presented in the article.
    Źródło:
    Computer Applications in Electrical Engineering; 2016, 14; 419-431
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of the properties and impact of the shape of a flexible photovoltaic roof tile on the effectiveness of its performance
    Autorzy:
    Dobrzycki, A.
    Kurz, D.
    Laska, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/97279.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    photovoltaic roof tile
    BIPV
    amorphous cells
    energy yield
    current–voltage characteristics
    photovoltaic module exposure
    Opis:
    This paper concerns building integrated photovoltaics (BIPV), and in particular, potential advantages resulting from the use of this technology. The possibilities of integration of the BIPV elements in the building structure were presented, with particular consideration of photovoltaic roof covering. In order to demonstrate the legitimacy of using solutions of this type in real conditions, the subject of the analysis was the thin–film photovoltaic module, which constitutes an integral part of the photovoltaic roof tile. During the tests, particular attention was paid to changes in parameters of the tested object, depending on the way it is shaped in relation to the solar radiation, demonstrating in this way, the necessity to strive for the optimal exposure of the BIPV elements in relation to the sun.
    Źródło:
    Computer Applications in Electrical Engineering; 2016, 14; 432-443
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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