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Your search keyword '"Almonacid, Florencia M."' showing total 16 results
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16 results on '"Almonacid, Florencia M."'

14. Influence of Ground Cover Ratio on Optimum Inverter Size in CPV Plants.

Author

Rodrigo, Pedro M., Fernández, Eduardo F., Almonacid, Florencia M., and Pérez-Higueras, Pedro J.

Subjects
SOLAR concentrators, SOLAR power plants, FRESNEL lenses, SOLAR energy, PHOTOVOLTAIC power generation, PHOTOVOLTAIC power systems
Abstract

In this paper, it is shown that the inverter size that maximizes the energy yield in CPV plants is influenced by self-shading between sun trackers. For this purpose, a detailed CPV power plant model was developed from experimental data obtained in the outdoor characterization of a typical 700x concentration factor Fresnel lens-based CPV module. The simulated results indicate that neglecting the impact of shading can lead to inaccurate values of the optimum inverter capacity from an energetic point of view. However, applying an economic optimization criterion, the inverter sizing ratio seems to be independent on ground cover ratio. In the study, the influence of the inverter efficiency characteristics is also discussed. [ABSTRACT FROM AUTHOR]

Published
2018
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16. A method for the outdoor thermal characterisation of high-concentrator photovoltaic modules alternative to the IEC 62670-3 standard

Author

Aime Lay-Ekuakille, Eduardo F. Fernández, Pedro M. Rodrigo, Ramiro Velazquez, Florencia Almonacid, Rodrigo, Pedro M., Ramiro, Velazquez, Fernandez, Eduardo F., Almonacid, Florencia M., and Aimé, Lay-Ekuakille

Subjects
Alternative methods, Materials science, Mean squared error, 020209 energy, Mechanical Engineering, Nuclear engineering, Thermal resistance, Photovoltaic system, 02 engineering and technology, Building and Construction, 021001 nanoscience & nanotechnology, Pollution, Industrial and Manufacturing Engineering, General Energy, Thermal, 0202 electrical engineering, electronic engineering, information engineering, Cell temperature, Concentrator photovoltaics, Electrical characterisation, Thermal characterisation, Concentrator photovoltaic, Electrical and Electronic Engineering, 0210 nano-technology, Temperature coefficient, Civil and Structural Engineering, Voltage
Abstract

The IEC 62670-3 standard recommends the open-circuit voltage method to calculate the cell temperature inside high-concentrator photovoltaic (HCPV) modules. This method requires knowledge of the temperature coefficient of open-circuit voltage (β), and the same standard provides a procedure to get this parameter. In this paper, an alternative method for the thermal characterisation of HCPV modules is proposed. As an advantage, it allows obtaining both the β parameter and the internal thermal resistance (ρ) of the device from outdoor measurements. No internal sensor for measuring the cell temperature is required as in the case of the IEC 62670-3 standard. Knowing the ρ parameter allows a more accurate characterisation of the cell temperature. The proposed procedure is applied to a real HCPV module. An outdoor experimental campaign of two months in Jaen (Southern Spain) was carried out. The β value was underestimated in a 0.50% and the ρ value was overestimated in a 4.18%. When applying the estimated parameters for the prediction of the cell temperature, the open-circuit voltage method gave a root mean square error (RMSE) of 1.41 °C, while the internal thermal resistance method gave a RMSE of 0.62 °C.

Published
2018
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