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Wyszukujesz frazę "harmonics" wg kryterium: Temat

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    Wyświetlanie 1-6 z 6
    Tytuł:
    A study on the effect of harmonie components of the current supplying an induction motor with reactive power compensation with the use of capacitors on the power loss and voltage variations
    Autorzy:
    Nawrowski, R.
    Stein, Z.
    Zieliński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/97224.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    induction motor
    current and voltage harmonics
    power loss compensation
    Opis:
    The paper presents an analysis of the effect of voltage harmonics on the power loss in an LV line supplying an induction motor with reactive power compensation, with the use of capacitors, and analysis of the values of output voltage of an MV/LV transformer depending on the load type and value.
    Źródło:
    Computer Applications in Electrical Engineering; 2014, 12; 275-287
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Harmonics in the current powering selected low and medium power devices and their impact on power losses
    Autorzy:
    Nawrowski, R.
    Stein, Z.
    Zielińska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/97608.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    electromagnetic compatibility of electric circuits
    harmonics in current and voltage
    Opis:
    The paper deals with the issues related to currents of higher harmonics occurring in low and medium power circuits, using the Mcad software. Furthermore, it presents the effect of current harmonics on the root–mean–square value of these currents, and thus on the current load of conductors, especially the neutral (zero) conductor. Subject to discussion are also the effects of higher current harmonics on the performance of the power grid.
    Źródło:
    Computer Applications in Electrical Engineering; 2016, 14; 101-112
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Energy balance and quality in electric network powering IT objects
    Autorzy:
    Bednarek, K.
    Kasprzyk, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/97479.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    quality of energy
    disturbance waveforms
    higher harmonics
    energy balance
    reactive power compensation
    Opis:
    The paper deals with elements of issues regarding the impact of electromagnetic disturbances and electric energy management. The energy balance and tests of distortions of voltage and current waveforms in the power supply system of an IT facility such as a computer laboratory were carried out. The measurements covered current and voltage values, active power, reactive power and apparent power, power factor and THD (Total Harmonics Distortion) factor for voltage and current, waveforms and content of current and voltage harmonics in the facility under consideration. On top of this, effects of the UPS EVER POWERLINE power supply, provided with the reactive power compensation function (without connecting reactive compensation components) were tested in reference to the reactive power consumption by devices connected in parallel with the UPS to the electric network in the object. The analyses were carried out in terms of introducing rationalization of energy management and eliminating the impact of disturbances in systems covering power supply and energy receivers, that is, achieving technical (reliability of devices) and economic benefits (reduction in operational costs resulting from occurring power losses and in charges collected for consumption of electricity) in using large powered objects.
    Źródło:
    Computer Applications in Electrical Engineering; 2016, 14; 113-126
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measurements and analysis selected power quality parameters in systems with LED light sources
    Autorzy:
    Putz, Ł.
    Kurzawa, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/97575.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    electroluminescent diode
    experimental setup
    LED source
    higher harmonics
    lighting installation
    power quality
    THD ratio
    Opis:
    The article describes the measurements of power quality parameters of load which is mapping the lighting installation of LED sources. Study were performed on a specially constructed the experimental setup which allows for the measurement of electrical parameters and distortion from electroluminescent lighting. In the paper quoted the legal basis in the field of power quality, referring to the Standards: PN EN 50160 “Voltage characteristics of electricity supplied by public electricity networks” and PN–EN 61000 “Electromagnetic compatibility (EMC)”. Also has been presented a comparative study of LED light sources from various manufacturers, working individually and in a group. Shown the waveforms of current intensity and the bar graphs of higher harmonics of current. Additionally has been plotted the characteristics of total harmonic distortion ratio of current intensity THDi in the relation to the active power cooperating LED lamps. Finally the results of research has been analyzed and summarized.
    Źródło:
    Computer Applications in Electrical Engineering; 2016, 14; 551-561
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental setup to research power quality parameters in systems with LED light sources
    Autorzy:
    Putz, Ł.
    Kurzawa, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/97734.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    electroluminescent diode
    experimental setup
    LED source
    higher harmonics
    lighting installation
    power quality
    THD ratio
    Opis:
    The article describes the design, construction and research capabilities the experimental setup for measure the parameters of power quality of load which is mapping the lighting installation of LED sources. The standing has been build in order to study the disruption comes from the electroluminescent lighting mostly. The construction of standing also allows conducting the experimental research with the equipment which could improve the quality of electricity. In the paper quoted the concept of the power quality according to suggestion of Advisory Committee on Electromagnetic Compatibility (ACEC). Also has been presented the causes and consequences of exceeding the permissible values of power quality parameters. In the publication has been described the procedure for preparing and setting up the experimental setup for measuring the higher harmonics of current flowing through the tested LED lighting.
    Źródło:
    Computer Applications in Electrical Engineering; 2016, 14; 541-550
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimization analyze of the LED lighting installation for a quality of electrical energy
    Autorzy:
    Putz, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/376357.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    electroluminescent lighting
    higher harmonics of voltage and current
    LED
    lighting installation
    online UPS power supply
    quality of electrical energy
    Opis:
    The author of this paper plans to make a measurement of quality parameters for existing and used lighting installation, made from electroluminescent diodes (LED). The measurements will be made in a few different working states of installation. Based on research will be conducted the analyze and this allow define the worst working state. In the further will be selected elements which generate the most of distortion. The research will aim to create optimal solution, that is maximal reduction of higher harmonics voltage and current level, while minimal costs of influence in lighting installation.
    Źródło:
    Poznan University of Technology Academic Journals. Electrical Engineering; 2014, 79; 261-268
    1897-0737
    Pojawia się w:
    Poznan University of Technology Academic Journals. Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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