A grid-tied PV-fuel cell multilevel inverter under PQ open-loop control scheme

Magdi G., Muftah and Mohamed, Salem and Yonis M Yonis, Buswig and Khlid Ben, Hamid and Doudou N., Louta and Mohamad, Kamarol (2022) A grid-tied PV-fuel cell multilevel inverter under PQ open-loop control scheme. Frontiers in Energy Research, 10 (3389). pp. 1-17. ISSN 2296-598X

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Abstract

This paper aims to assess the performance of a centralized single-stage grid-tied three-level diode clamped inverter connected to a PVFuel cell unit. An active and reactive power open-loop control scheme is employed to operate the inverter and achieves a current harmonic distortion below 5%. The system comprises a 150 kW/700 V PV, a 150 kW/1400 V fuel cell, a 265 kW multilevel inverter operating at a rated voltage of 415 V, and an LCL filter. Two operating scenarios are adopted to investigate the system’s responses further. In the first scenario, a local load of 509.2 kW is supplied from the PV-fuel cell inverter. The load also receives the grid’s power to meet the demand as the PV-fuel cell inverter provides only 265 kW. Whereas in the other scenario, the PV-fuel cell unit provides power to supply a local load while transporting the surplus to the grid. The results reveal the developed model’s good performance with a current harmonic distortion of 0.33%.

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