PV systems linked to the grid: parameter identification with a heuristic procedure

Fialho, L.; Melício, R.; Mendes, V. M. F.; Estanqueiro, Ana; Pereira, Manuel Collares

http://hdl.handle.net/10400.9/2969

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Authors

Pereira, Manuel Collares

Abstract(s)

This paper focuses on a PV system linked to the electric grid by power electronic converters, identification of the five parameters modeling for photovoltaic systems and the assessment of the shading effect. Normally, the technical information for photovoltaic panels is too restricted to identify the five parameters. An undemanding heuristic method is used to find the five parameters for photovoltaic systems, requiring only the open circuit, maximum power, and short circuit data. The I–V and the P–V curves for a monocrystalline, polycrystalline and amorphous photovoltaic systems are computed from the parameters identification and validated by comparison with experimental ones. Also, the I–V and the P–V curves under the effect of partial shading are obtained from those parameters. The modeling for the converters emulates the association of a DC–DC boost with a two-level power inverter in order to follow the performance of a testing commercial inverter employed on an experimental system.

Keywords

Photovoltaic systems Power electronics Parameter identification Modelling Simulation Experimental results

URI

http://hdl.handle.net/10400.9/2969

Citation

Fialho, L.; Melício, R.; Mendes, V.M.F.; Estanqueiro, A.; Pereira, M.C. - PV systems linked to the grid: parameter identification with a heuristic procedure. In: Sustainable Energy Technologies and Assessments, 2015, Vol. 10, p. 29-39