Photovoltaic arrays (solar cells) generate a DC voltage that can be used to drive DC motors or that can be converted to AC power and added to the distribution network It is desirable to maintain the power out of the array at its maximum available as the solar incidence changes during the day One su...

Photovoltaic arrays (solar cells) generate a DC voltage that can be used to drive DC motors or

Question:

Photovoltaic arrays (solar cells) generate a DC voltage that can be used to drive DC motors or that can be converted to AC power and added to the network. It is desirable to maintain the power out of the array at its maximum available as the solar incidence changes during the day. One such closed-loop system is shown in Figure P5.8. The transfer function for the process is
G(s) = K / s + 20.
where K = 20. Find
(a) The time constant of the closed-loop system and
(b) The settling time to within 2% of the final value of the system to a unit step disturbance.
Figure P5.8
Solar cell control.

Distribution
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