Consider a PV module with the following parameters as measured at STC (Standard

Question

Consider a PV module with the following parameters as measured at STC (Standard Testing Conditions): Voc = 50 V; Isc = 4.5 A; Impp = 4 A; Vmpp = 40 V; Efficiency = 18%. 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 1k. What value of resistance will you keep the load at, if you wish to derive maximum power from the PV module under STC conditions? a. R = 11.11. b. R = 10. c. R = 100. d. Irrespective of the value R takes, the module can never be made to deliver maximum power under STC.

Explanation / Answer

resistance = 50/4.5 =11.11ohm

Rm = 40/4 =4ohm

a. R = 11.11.

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