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Wyszukujesz frazę "efficiency optimization" wg kryterium: Temat

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    Wyświetlanie 1-4 z 4
    Tytuł:
    Energy Efficiency Optimization by Spectral Efficiency Maximization in 5G Networks
    Autorzy:
    Krasniqi, B.
    Rexha, B.
    Maloku, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/226636.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    energy efficiency
    5G
    radio resources
    power allocation
    optimization convexity
    Opis:
    Energy and spectral efficiency are the main challenges in 5th generation of mobile cellular networks. In this paper, we propose an optimization algorithm to optimize the energy efficiency by maximizing the spectral efficiency. Our simulation results show a significant increase in terms of spectral efficiency as well as energy efficiency whenever the mobile user is connected to a low power indoor base station. By applying the proposed algorithm, we show the network performance improvements up to 9 bit/s/Hz in spectral efficiency and 20 Gbit/Joule increase in energy efficiency for the mobile user served by the indoor base station rather than by the outdoor base station.
    Źródło:
    International Journal of Electronics and Telecommunications; 2018, 64, 4; 497-503
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Transformer performance enhancement by optimized charging strategy for electric vehicles
    Autorzy:
    Venkataswamy, R.
    Uma Rao, K.
    Meena, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2042802.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    charging stations
    electric vehicle
    e-mobility
    optimization
    transformer efficiency
    transformer regulation
    Opis:
    Transformer efficiency and regulation, are to be maintained at maximum and minimum respectively by optimal loading, control, and compensation. Charging of electric vehicles at random charging stations will result in uncertain loading on the distribution transformer. The efficiency reduces and regulation increases as a consequence of this loading. In this work, a novel optimization strategy is proposed to map electric vehicles to a charging station, that is optimal with respect to the physical distance, traveling time, charging cost, the effect on transformer efficiency and regulation. Consumer and utility factors are considered for mapping electric vehicles to charging stations. An Internet of Things platform is used to fetch the dynamic location of electric vehicles. The dynamic locations are fed to a binary optimization problem to find an optimal routing table that maps electric vehicles to a charging station. A comparative study is carried out, with and without optimization, to validate the proposed methodology.
    Źródło:
    Archives of Electrical Engineering; 2022, 71, 1; 37-56
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical thermodynamic optimization of supercritical coal fired power plant with support of IPSEpro software
    Autorzy:
    Elsner, W.
    Kowalczyk, Ł.
    Marek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/240118.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    optymalizacja termodynamiczna
    siłownia nadkrytyczna
    symulacja
    wydajność
    efficiency
    simulation
    supercritical power plant
    thermodynamic optimization
    Opis:
    The paper presents a thermodynamic optimization of supercritical coal fired power plant. The aim of the study was to optimize part of the thermal cycle consisted of high-pressure turbine and two chosen high-pressure feed water heaters. Calculations were carried out using IPSEpro software combined with MATLAB, where thermal efficiency and gross power generation efficiency were chosen as objective functions. It was shown that the optimization with newly developed framework is sufficiently precise and its main advantage is the reduction of computation time on comparison to the classical method. The calculations have shown the tendency of the increase in efficiency, with the rise of a number of function variables.
    Źródło:
    Archives of Thermodynamics; 2012, 33, 3; 101-110
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation and simulation based optimization of an energy storage system with pressurized air
    Autorzy:
    Hübner, Dirk Herbert
    Grün, Sebastian
    Molter, Jan
    Powiązania:
    https://bibliotekanauki.pl/articles/1955053.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    renewable energy
    pressurized air
    storage system
    efficiency study
    simulation based investigation
    simulation based optimization
    Opis:
    As a central goal of the energy transition in Germany, the share of renewable energies is to be increased to over 80% by 2050. Due to fluctuating wind conditions or the day-night cycle, storage systems must be integrated into the supply grid for a continuous regenerative power supply from wind and solar energy. In addition to pumped storage systems, batteries and Power2Gas approaches, compressed gases (optimally air) can also be used for this purpose. The aim of the research and development project presented is to develop such a storage unit with the best possible efficiency and long service life. To this end, basic calculations were first made on possible efficiencies depending on the assumed changes in the state of the working gas. Furthermore a piston compressor for compressed air generation was investigated experimentally with regard to its efficiency. In addition, the compressor was modelled and simulated in a corresponding software. Thus, on the one hand, the efficiency of the existing piston compressor could be determined experimentally and, on the other hand, the simulation model could be assessed with regard to its suitability for the purpose of simulation-based optimization. Measures to increase efficiency can be derived from the results. In addition, it becomes possible to forecast the achievable overall efficiency of such an energy storage system with compressed air.
    Źródło:
    Archives of Thermodynamics; 2021, 42, 4; 183-200
    1231-0956
    2083-6023
    Pojawia się w:
    Archives of Thermodynamics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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