The Combined Fuzzy and PO MPPT Method for PV Materials under Partially Shaded Conditions
An efficient Maximum Power Point Tracking (MPPT) control method is important to increase the output efficiency of a photovoltaic (PV) material. The output power of PV power system depends on local irradiance conditions. The output characteristics of large-scale PV materials under partial shading conditions have multiple maximum power points, which make the tracking of the actual maximum power point (MPP) a difficult task. A novel combined fuzzy and perturb and observe (PO) control method is suggested to extract maximum power from the PV materials under these conditions. The ability of the proposed method and its increased performance as compare with the traditional fuzzy control method is evaluated by means of experimental tests performed on a real PV power system and based on the MSP430x44x microcontroller.
Helen Zhang and David Jin
L. Q. Liu and Z. X. Wang, "The Combined Fuzzy and PO MPPT Method for PV Materials under Partially Shaded Conditions", Advanced Materials Research, Vol. 321, pp. 80-83, 2011