Global Peak Detection with Novel PV Curve Triangle for Partially Shaded PV Modules

The Photovoltaic (PV) panel placed on the roof is frequently subjected to partial shading conditions and exhibits several multiple peaks in the
$P-V$
characteristics. Initially identify the maximum power peak to track Global Maximum Power Point (GMPP) in partial shading conditions. To reduce the time of identifying the global peak, the new global peak detection based on the PV curve triangle is proposed. The PV curve triangle is formed by the voltage axis and initial and final straight lines in the
$P-V$
characteristics. The altitude drawn to the base of the triangle gives the global peak location that, the four peaks' ranges near the altitude that two peaks back and two peaks ahead. This method requires only four scanning irrespective of the number of modules in the PV array. The method is examined with 8 case studies of different partial shading conditions on 5×1, 9×1, and 9×4 arrays. From the simulation analysis, the global peak is correctly detected using the PV curve triangle.