High DC voltage gain: The maximum power point voltage range of the PV module used in the BIPV system is from 23 to 38 V at a power generation, i.e., from 100 to 300W,and the open-circuit voltage of the PV module is usually below 45 V . According to electrical characteristics of
PV modules described earlier, the main electrical specifications of a universal PV-DCBM integrated high step-up dc–dc converter can be defined as follows: a) input voltage: from 20 to 50 V; b)output voltage: 200 or 400 V; and c) nominal power: from 100 to 300 W. Consequently, the
range of its dc voltage gain is about from 4 to 20.