Solar Energy
posted by Anonymous on .
Consider a PV module with the following parameters as measured at STC (Standard Testing Conditions):
Voc = 55 V;
Isc = 5 A;
Impp = 4.7 A;
Fill Factor = FF = 75% ;
Efficiency = 19.75%.
Suppose that under normal operation at STC conditions, the module is not connected to an MPPT device, and is instead directly connected to a purely resistive, variable load 'R'. The load R can be tuned to give a resistance between 0 to 1kΩ.
What value of resistance will you keep the load at, if you wish to derive maximum power from the PV module under STC conditions?
1)R = 9.34Ω.
2)R = 11Ω.
3)R = 11.71Ω.
4)R = 5Ω.
5)Irrespective of the value R takes, the module can never be made to deliver maximum power under STC.

2 and 4 are not right answers :(

pardon, its 3 and 4 that are incorrect.

Please Rata can you correct the answer?

3)11.71¥Ø

Are you sure oniX?
Ratan said 3 is wrong. 
it is wrong! I'm sure!

2, 3 and 4 are wrong... answer is 1st or the last option. try your luck.

5th is also wrong

1) R=9.34 is right answer...

R=9.34