Regulation of electric power of photovoltaic generators with DC-DC converter (buck type) and MPPT command

In this paper we have analysed in Pspice and in experiments the operation of a PV system formed with a converter DC-DC of the buck type, MPPT command and circuit command buck (CCB). We have showed that the CCB circuit commands the switch of the DC-DC converter and the PV panel operates at its optimal voltage. The later is fixed in function of ambient weather conditions.