New Configuration of Solar Photovoltaic Energy Conversion Cascade Based Single-Phase Three-Level NPC Inverter. Practical Application in South Algeria

The objective of this work is to propose., simulate and experiment a new two-stage photovoltaic conversion cascade. It is composed of a boost converter followed by a single-phase NPC three-level inverter. The DC/DC converter is controlled by the MPPT P&O algorithm. About the two-leg of the multi-level inverter., the sine-triangle Pulse Width Modulation (PWM) strategy is applied. The implementation of the two control algorithms is carried out using the Matlab software associated with the Arduino Mega and PCIe6351 control boards. These cards deliver the control signals., which are then amplified for the transistors gates.