Digital Ripple Correlation Control for Photovoltaic Applications

Jonathan W. Kimball, Missouri University of Science and Technology
Philip T. Krein

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Ripple correlation control (RCC) is a fast, robust online optimization technique. RCC is particularly suited for switching power converters, where the inherent ripple provides information about the system operating point. The present work examines a digital formulation that has reduced power consumption and greater robustness. A maximum power point tracker for a photovoltaic panel demonstrates greater than 99% tracking accuracy and fast convergence.