A NEW METHOD OF PV RECONFIGURATION UNDER PARTIAL SHADOW CONDITIONS BASED ON DC/DC CENTRAL CONVERTER

Abstract

Now a day’s solar photovoltaic energy played a
wider role in terms of electrical power energy
generation. This type of power energy can face
many obstacles; like partial shadow conditions,
aging PV cells and modules, etc. these difficulties
can be avoided by many ways like the operation of
reconfigurable of photovoltaic (PV) systems. The
reconfiguration is of great interest with respect to
system designers in order to improve the system’s
efficiency and operation. This paper suggests a new
method to present an algorithm of reconfiguration
PV system strategy under partially shaded
conditions (PSCs), for central converter photovoltaic
(PV) systems, is introduced. The technique of
reconfiguration the photovoltaic (PV) system
accomplished with the help of DC/DC central
converter. In the next step, an accurate arrangement
and connection of the modules that have the same
value of irradiation level assembled in one group
string. Then theses strings with different irradiation
levels, each connect to DC-DC converter. Suggested
algorithm increases the power of the solar PV array
according to a model-based algorithm. The model
algorithms are implemented in real time. Finally, the
proposed solution is ensuring that the adaptive string
has the ability to capture the MPP.