Researched on Maximum Power Point Tracking of PV Power System
To the oscillation and misjudgment problem of the traditional perturbation and observation algorithm, a novel three-point comparison method was proposed. This method applied Constant Voltage Tracking (CVT) method and variable-step perturbation method to solve the problem between tracking accuracy and speed, and applied double-direction perturbation method to make sure the reliability of action to avoid the misjudgment when external conditions fast changing. Restraining the oscillation near the maximum power point effectively was another merit of this proposed method. Finally, the experimental results demonstrate effectiveness of proposed method with PV experimental platform.
W. M. Chen et al., "Researched on Maximum Power Point Tracking of PV Power System", Applied Mechanics and Materials, Vols. 229-231, pp. 1009-1012, 2012