Title :
Thevenin´s equivalent of photovoltaic source models for MPPT and power grid studies
Author :
Chatterjee, A. ; Keyhani, A.
Abstract :
The model of a photovoltaic (PV) source is needed for Maximum Power Point Tracking (MPPT) and power grid studies. The single diode model can fairly emulate PV´s characteristic. The only nonlinear element in this model is the single diode. This paper proposes Thevenin´s equivalent model for a PV source by piecewise linearization of the diode characteristic. The variation of the parameters with the change in temperature and irradiance is also studied. It is shown that Thevenin´s equivalent model of PV produces a voltage-current characteristic which represents the PV source operation fairly well.
Keywords :
equivalent circuits; maximum power point trackers; piecewise linear techniques; power grids; MPPT; Thevenin equivalent model; maximum power point tracking; photovoltaic source models; piecewise linearization; power grid studies; single diode model; Equations; Junctions; Linear approximation; Mathematical model; Resistance; Temperature; Modeling; photovoltaics (PVs); power grid;
Conference_Titel :
Power and Energy Society General Meeting, 2011 IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4577-1000-1
Electronic_ISBN :
1944-9925
DOI :
10.1109/PES.2011.6039203
