Improved MPPT method for rapidly changing environmental conditions

A well-known limitation of the perturb and observe (P&O) MPPT method is that it can get confused and track in wrong direction during rapidly changing irradiation. The present work offers a simple and effective solution to this problem, by using an additional measurement of the solar array's power in the middle of the MPPT sampling period. The method has been experimentally tested and compared with the traditional P&O method

[1]  Mike Ropp,et al.  Comparative study of maximum power point tracking algorithms using an experimental, programmable, maximum power point tracking test bed , 2000, Conference Record of the Twenty-Eighth IEEE Photovoltaic Specialists Conference - 2000 (Cat. No.00CH37036).

[2]  Angelo Brambilla,et al.  New approach to photovoltaic arrays maximum power point tracking , 1999, 30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321).

[3]  M. Vitelli,et al.  Optimizing sampling rate of P&O MPPT technique , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[4]  Weidong Xiao,et al.  A modified adaptive hill climbing MPPT method for photovoltaic power systems , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).