Q1. You are required to design a stand-alone solar PV system for a rural home with the following electrical load designed to operate on single phase, 230 V 50 Hz supply. The type of load, the rated power and the number of hours each load is used are as shown in the table1. Table 1 Load Watts Hours Tube light 1 20 Tube light 2 20 Tube light 3 20 Kitchen light 30 10 Fan 1 70 Fan 2 70 8 Fan 3 70 10 COCO O COCO The data of the solar panel to be used for the design is given in table 2. Table 2 MAX MPP MPP Cells 36 Nominal Voltage 12 V 170 Wp 19.2V 8.85 A 23.4V 9.35 A Assume an average yearly solar insolation of 5 kWh/m2 per day at the location of rural home. Also assume that the overall efficiency of the system due to all the connected equipment is 70%. (0) List all the major components required for the installation of the PV system. (ii) Calculate the daily energy consumption in Watt-hour (Wh). (II) Calculate the number of solar panels required. (iv) Calculate the number of 12 V, 200 Ah batteries required assuming a depth of discharge of 80%.

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