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4th International Conference on Power Electronics and their Applications (ICPEA) -- SEP 25-27, 2019 -- Elazig, TURKEY, WOS: 000523476700030, In this paper, the design and analysis of a single phase grid-connected fuel cell system is presented. For this, proton exchange membrane fuel cell (PEMFC) is used as an energy generation unit and the system is integrated into the utility-grids/loads through a single phase inverter. For this purpose, all/dq conversion based power flow controller is employed in single phase H-bridge inverter. The system is constructed through Matlab/Simulink environment program. In the performance/analysis section, the system is tested for different load conditions. The power flow waveforms and system voltages/currents are given in modeling results. In case studies, it is obvious that the excess power is supplied to the grids and the lacking power is provided from the grids to feed loads., Ziane Achour Univ Djelfa, Firat Univ, Djelfa Univ, Fac Sci & Technol, Appl Automat & Ind Diagnost Lab, IEEE Algerian Sect, IEEE Turkey Sect, IEEE Power Elect Soc, IEEE Power & Energy Soc, IEEE Ind Applicat Soc, Djelfa Univ, IEEE, Firat Univ, Engn Fac

4th International Conference on Power Electronics and their Applications (ICPEA) -- SEP 25-27, 2019 -- Elazig, TURKEY, WOS: 000523476700044, In this paper, a transformer-less grid-connected PV system using low voltage panels is designed and analyzed for residential applications. For this, dual-level dc-dc boost converter is used to obtain a higher voltage level at the output, and the system is integrated into the utility-grids/loads through a three-phase inverter. By this way, the designed system reduces the cost and dimension in comparison with a conventional system. In the designed system, the switching operation of dual-level dc-dc converter is achieved using perturb & observe maximum power point tracking method. In the performance/analysis section, the system is tested for different load groups and irradiation levels. The results show that the system increases the PV voltage to the desired voltage value. Also, the system is analyzed for three irradiation levels and two local load groups. In case studies, it is obvious that the excess power is supplied to the grids and the lacking power is provided from the grids to feed loads., Ziane Achour Univ Djelfa, Firat Univ, Djelfa Univ, Fac Sci & Technol, Appl Automat & Ind Diagnost Lab, IEEE Algerian Sect, IEEE Turkey Sect, IEEE Power Elect Soc, IEEE Power & Energy Soc, IEEE Ind Applicat Soc, Djelfa Univ, IEEE, Firat Univ, Engn Fac