Validation of MPPT controller based on backstepping using the model and the processor in the loop with a 32-bit microcontroller

In this paper, we present the validation of control using backstepping for Maximum Power Point Tracking (MPPT). For designing this controller, we follow an approach based on the validation of two Model based Design (MBD) tests. The objective is to design, to test and to validate the MPPT algorithms into embedded software. Using the Perturb and observe algorithm (P&O) allows to provide the reference voltage to the backstepping controller. After testing the good behavior of the whole system, we can generate C code optimized exactly for the STM32F4 microcontroller. Model in the Loop (MIL) and Processor in the Loop (PIL) are two techniques used to simulate the MPPT algorithm and backstepping controller. As conclusion, the algorithm and controller developed demonstrates a high performance with MPPT requirements. The power generated from PV array tracked perfectly the reference power with response time is less than 0.006s.