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Ricardo Orduz, Jorge Solórzano, Miguel Ángel Egido and Eduardo Román Analytical study and evaluation results of power optimizers for distributed power conditioning in photovoltaic arrays Progress in Photovoltaics: Research and Applications 21

Article first published online: 20 NOV 2011 | DOI: 10.1002/pip.1188

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The analytical methods and new expressions set out in this paper provide useful information on the behavior of cascade maximum power point tracking (MPPT) converters applied to each photovoltaic (PV) module in a typical grid-connected PV system. A novel characterization method allows to verify on site, and at the same time, associate the PV module and its MPPT converter.

The progressive shadow profile test provides important information on the tracking of the MPP and the conversion ratio limits. Also, the correlation between punctual shading levels and the power improvement factor allow to identify when to reach the input power maximization using MPPT strategy.

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