Efficiency of a Hybrid System

Hi All,

I'm currently building a a hybrid system that contains a solar panel, an adjustable voltage regulator, Reversible Fuel Cell, DC-DC converter and and a DC-AC converter.

The output of the solar panel is (17.82 V, 0.57 A, 10W)

which I have connected to an adjustable voltage regulator

(3 to 30V input voltage, Up to 10W output power, 1A continuous output current, Efficiency up to 92%, output voltage 1.25 V to 13 V)

so that I can take 2V and 1A to power the reversible fuel cell (in electrolysis mode) to produce hydrogen and oxygen). I have found that the reversible fuel cell is about 35% efficient.

May you also please suggest how the voltage regulator and dc-dc converters work? if the input is 17.82 V and 0.57 A, and the output we take is 2 V and 1A, what happens to the rest of the power?

I would like to calculate the efficiency of the system so far.

Please suggest.

Gyandeep

PS- Firstly, sorry I did post the msg before but I forgot to sign in before I posted it, so I was not getting your replies.