Among Renewable Energy Sources, the solar energy represents an attractive alternative solution to traditional sources because is available everywhere; moreover, photovoltaic (PV) modules are nowadays becoming more and more attractive as the price per watt of the photovoltaic modules is decreasing. The output voltage furnished by a PV module is quite low; therefore, a series connection of different modules has to be employed in order to obtain a sufficient output dc voltage. In non-uniform irradiation conditions of a PV array, traditional Maximum Power Point Tracking (MPPT) algorithms can converge to a relative maximum point, thus output power becomes lower than the absolute maximum. Since the conversion efficiency of commercial photovoltaic modules is still rather low, to increase the power produced, also under partially shaded conditions, is necessary to employ an efficiently, fast and simple MPPT. The paper proposes, for a Switched Capacitor-Boost converter structure, a non-conventional MPPT method able to track the absolute Maximum Power Point (MPP).

Bifaretti, S., Iacovone, V., Cina, L., Buffone, E. (2012). Global MPPT method for partially shaded photovoltaic modules. In 2012 IEEE Energy Conversion Congress and Exposition, ECCE 2012 (pp.4768-4775). IEEE [10.1109/ECCE.2012.6342171].

Global MPPT method for partially shaded photovoltaic modules

BIFARETTI, STEFANO;
2012-09-01

Abstract

Among Renewable Energy Sources, the solar energy represents an attractive alternative solution to traditional sources because is available everywhere; moreover, photovoltaic (PV) modules are nowadays becoming more and more attractive as the price per watt of the photovoltaic modules is decreasing. The output voltage furnished by a PV module is quite low; therefore, a series connection of different modules has to be employed in order to obtain a sufficient output dc voltage. In non-uniform irradiation conditions of a PV array, traditional Maximum Power Point Tracking (MPPT) algorithms can converge to a relative maximum point, thus output power becomes lower than the absolute maximum. Since the conversion efficiency of commercial photovoltaic modules is still rather low, to increase the power produced, also under partially shaded conditions, is necessary to employ an efficiently, fast and simple MPPT. The paper proposes, for a Switched Capacitor-Boost converter structure, a non-conventional MPPT method able to track the absolute Maximum Power Point (MPP).
2012 IEEE Energy Conversion Congress and Exposition, ECCE 2012
Rayleigh, NC, USA
2012
4
IEEE
Rilevanza internazionale
Settore ING-IND/32 - Convertitori, Macchine e Azionamenti Elettrici
English
DC-DC Conversion; Maximum Power Point Tracking; Non-uniform irradiation; Photovoltaic modules; PV arrays; Renewable energy source;
Intervento a convegno
Bifaretti, S., Iacovone, V., Cina, L., Buffone, E. (2012). Global MPPT method for partially shaded photovoltaic modules. In 2012 IEEE Energy Conversion Congress and Exposition, ECCE 2012 (pp.4768-4775). IEEE [10.1109/ECCE.2012.6342171].
Bifaretti, S; Iacovone, V; Cina, L; Buffone, E
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/98159
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