6. Conclusion
The simulation results for a 7 kW (3kW-WG and 4kW-PVG) are very promising and prove in general that the fuzzy MPPT controller performances, in terms of stability, precision and speed in the tracking of the MPP of both PVG and WG are much better than those of the conventional method. The implementation of such controllers allows the optimization of the power out of both renewable energy generators (PVG and WG), through a high stability around the MPP against sudden changes of wind speed, solar irradiation and temperature. The stability around the MPP translated directly to optimize sizing rules by minimizing between three (3%) to nine (9%) from the installing powers, which results in economy of energy, and reduces the system total cost.
