Boost converter with pv array

Discussion in 'General Electronics Chat' started by elecidiot, Jul 18, 2010.

  1. elecidiot

    Thread Starter New Member

    Jun 29, 2010
    Hi all..
    Generally we know the input-output relationship for boost converter which is Vout=Vin*(1/(1-k)) where 'k' is duty cycle ie when 'k' is decreased Vout increases and vice versa. But when the boost converter is fed from a pv cell which is not a stiff voltage source, it is found that by increasing the duty cycle the input voltage to the boost converter decreases(pv's output voltage) and if 'k' is decreased the Vin of boost converter increases. This phenomenon is due to the intersection of the load line with pv cell characteristics. This I can understand. But my doubt is what is the expression for the output voltage in this case?
    Last edited: Jul 18, 2010