Now showing 1 - 2 of 2
  • Publication
    Optimum sizing of photovoltaic powered uninterruptible power supply system
    ( 2017-10-01)
    Mahrizal Masri
    ;
    ;
    Hermansyah Alam
    ;
    ;
    Butar-Butar A.H.
    Inverters installed in the photovoltaic (PV) powered uninterruptible power supply (UPS) system consist of battery and also PV module. An optimum number of PV module and battery should be considered to reduce costs and technical works. The PV powered UPS system is operated directly by the PV module, therefore, an optimization sizing of PV powered UPS system should be studied in terms of optimum PV module number that related to the power capacity of PV powered UPS system, solar radiation and temperature. This paper presents an optimum sizing of PV powered UPS system application. A mathematical modeling is created to obtain the optimum number of PV module and battery. The result shows that for 12V, 100W PV powered UPS system applying the 60W, 21V PV module, 12V, 100Ah battery, 700W AC load power, thus, the optimum number of PV module and battery are 20 modules and 5 pieces, respectively.
  • Publication
    Optimum Sizing and Performance of Fuel Cell Stack Integrated by Boosted DC-DC converter for Running DC Load
    (Institute of Physics, 2022-01-01) ; ;
    Suhelmi
    ;
    Iswandi
    ;
    Azis A.
    ;
    Rimbawati
    ;
    Leow W.Z.
    ;
    Jufrizal
    A fuel cell stack (FCS) converts the chemical energy to be the electrical energy through an electrochemical process. One type of FCS is proton exchange membrane (PEM) with hydrogen and oxygen as the main chemical energy source. The PEMFCS has been applied widely for operating direct current (DC) loads. However, the optimum sizing of FCS, DC load and the other supported devices are not considered well, thus the system performance does not have function optimum fully. This paper present the FCS integrated by boosted DC-DC converter for running DC load. The optimum sizing of FCS and boosted DC-DC converter are explained to obtain the required number of FCS and boosted DC-DC converter. A simulation of the FCS integrated boosted DC-DC converter is conducted using SIMULINK MATLAB. The simulation results show that the FCS and boosted DC-DC converter have good performance in the operation of DC load.
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