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- 2015-09-05
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- roshan
Description: Under partially shaded conditions, series connection
of photovoltaic (PV)modules results in the flow of lowest current in
the string corresponding to the most shaded module, reducing the
overall power output. Power output can be maximized by incorporating
module-level “distributed” maximum power point tracking
(DMPPT) wherein the current of each module is compensated
by regulating its voltage at the respective maximum power point
(MPP) value by connecting a dc–dc converter in parallel. Existing
current compensation schemes are either too complex or inaccurate.
This paper proposes a novel DMPPT scheme using current
compensation, which is simple to implement and yet provides an
accurate compensation, resulting in exact maximum power point
tracking (MPPT). In the proposed scheme, each PV module is
resonated through a special arrangement in the shunt-connected
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