Processor-in-the Loop Test and Experimental Validations for developed Nine level PV Inverter using High Performance ARM-STM32F407

In this paper a Single-Phase nine level inverter based on conventional single-phase H-bridge topology is proposed. It is dedicated to be used for ensuring the connection of single AC load to photovoltaic system. The proposed inverter system features less of switches number and a new auxiliary switches conception. Hence, it gives better voltage regulation, smooth operation and efficient yield compared to multi-level inverters. The proposed inverter topology is capable of producing nine levels of output voltage levels. This inverter is firstly simulated under MATLAB/ Simulink software, thereafter, co-simulated using the Processor-in-the-loop (PIL) technique. Secondly, the proposed inverter is designed and tested experimentally. The inverter control is implemented on the high-speed ARM-STM32F407 board. Based on the obtained results, it can be seen clearly that co-simulation results are matching experimental results, which proves the validity of the proposed multi-level inverter. This topology can be extended for more number of phases and levels.