How to find the number of solar cell in given total voltage at series connection?
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An individual photovoltaic cell produces an “Open Circuit Voltage” ( VOC ) of about 0.5 to 0.6 volts at 25oC (typically around 0.58V) no matter how large they are. This cell voltage remains fairly constant just as long as there is sufficient irradiance light from dull to bright sunlight. Open circuit voltage means that the PV cell is not connected to any external load and is therefore not producing any current flow.
When connected to an external load, such as a light, the output voltage of the individual cell drops to about 0.46 volts or 460 mV (460 millivolts) as the electrical current begins to flow, and will remain around this voltage level regardless on the sun’s intensity. This decrease in output voltage is caused by resistance and power losses within the cells structure as well as the metallic conductors deposited on the cells surface
When connected to an external load, such as a light, the output voltage of the individual cell drops to about 0.46 volts or 460 mV (460 millivolts) as the electrical current begins to flow, and will remain around this voltage level regardless on the sun’s intensity. This decrease in output voltage is caused by resistance and power losses within the cells structure as well as the metallic conductors deposited on the cells surface
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