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