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This paper proposes the intermittent step-varied search of maximum power point tracking (MPPT) method to solve the problem of the tracking speed and power oscillation, it is composed of three control processes including startup stage, step-varied timing search and constant duty ratio timing control. When the photovoltaic (PV) system starts up or the environment changes strongly, step-varied search...
In centralized or string photovoltaic (PV) systems, PV modules must be connected in series in order to generate a sufficiently high voltage to avoid further amplification and to efficiently drive further converters. This always requires dozens of PV modules, however some of them maybe suffer from partial shadow caused by trees, clouds or other things. In this case, power generated from each PV module...
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