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where and Iph Iph0 V kT Ir Ir0 (7) (8) IIph Is*(eN*Vt 1) Is2*(eN2*Vt tq Amjed Hina Fathima et al. / Energy Procedia 117 (2017) 607–614 611 3.2 Modeling of PV panel: The two-diode Solar cell model available in simulink library is considered in this study. The five parameter model is adopted which includes a current source, two diodes, series and parallel resistances. The net output current generated by the solar cell is given by eq (6) [10] VI*Rs VI*Rs V I*R 1) R s (6) The solar cell thus modeled has an open circuit voltage of 0.6V and short circuit current of 7.34 amps. These cells are connected in an array form to get the desired voltage and current. 4. Simulation Results and Discussion A Solar-VRB battery power system is considered for this study as shown in Fig.2. The Solar panel receives irradiation and generates the current to power a purely resistive domestic load. The VRB battery is connected in parallel to the PV system and its connections are managed through a charge controller. A 1kW PV model was built using Simulink solar cell model connected in an array to deliver 72V. The I-V and P-V curves obtained from the solar model thus designed is shown in Fig.3. p PV ARRAY + - VRB BATTERY CHARGE CONTROLLER LOAD Fig.2. PV-VRB modelPDF Image | Operation of a Vanadium Redox Flow Battery for PV
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