Applications of Improved Versions of Fuzzy Logic Based Maximum Power Point Tracking for Controlling Photovoltaic Systems
Many local and global fuzzy logic based MPPT methods have been proposed to seek the solar Photovoltaic (PV) system’s MPP. In this chapter, various improved FL-MPPTs which have been proposed over the years are introduced, their advantages and disadvantages are also clarified. Local MPPTs (LMPPTs) based on improved versions of FL are presented in detail, including Modified Hill Climbing–FL Controller (HC–FLC) and Adaptive P&O–FLC. Then, based on simulation and experimental results, a comparative study is done by employing the main assessment criteria to figure out the relative merits and limitations of those MPPTs in tracking the maximum power . The last part of the chapter introduces advanced Global MPPT techniques based on FL to track the GMPP of complicated shading patterns. A performance comparison of those GMPPTs is done and useful information on how to choose a suitable MPPT depending on the application intended, are outlined.
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