Muhammad Arshad
New User
- Location
- Cleveland
- Occupation
- Design Engineer
- Two commercial photovoltaic modules have the following nameplate specifications under standard test conditions:
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Specifications
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Model-A
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Model-B
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Maximum Power
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Pmax
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235
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220
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Watts
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Voltage at maximum power
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Vmpp
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30.1
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29
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Volts
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Current at maximum power
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Impp
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7.81
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7.6
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Amps
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Open-circuit Voltage
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Voc
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37
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36.2
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Volts
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Short Circuit Current
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Isc
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8.5
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8.4
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Amps
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Temperature coefficient of Isc
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isc
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0.053
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0.065
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%
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Temperature coefficient of Voc
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voc
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-0.351
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-0.36
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%
[/TD]STC: Standard test conditions - irradiance of 1000W/m2 at an AM1.5G solar spectrum and a temperature of 25°C. Using the above data:
Obtain the following 5-parameters for the two PV modules under reference conditions
I) IL: The light current
II) Io: The diodes reverse saturation current
III) RS: The series resistance
IV) RSH: The shunt resistance
V) a: The modified ideality factor a
b) Predict the power output and efficiencies of the two panels under 800 W/m2 and 47.5 0C.