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Output characteristic curve of photovoltaic arrays has
one global peak and one or more local peak under partially
shaded conditions. The conventional maximum power point
tracking (MPPT) algorithms such as Incremental Conductance
(IC) may be trapped in the local maximum power point. So they
may not find global maximum power point. However; soft
computing methods such as Bat algorithm may find it. This
paper proposes MPPT of photovoltaic system using modified BA
and IC algorithm. The standard BA has been modified by adding
a similar feature to tabu list of Tabu Search algorithm. In search
process, firstly, modified BA is used to determine the area of
global peak, then IC algorithm is replaced to track the maximum
power point in the area of global peak. If the power varies
greatly and rapidly, the search process starts again. Standard BA,
IC algorithm and the proposed method are simulated under
standard test condition and partially shaded conditions.
Simulations show that the proposed method is successful even in
difficult conditions such as partial shadowing.
1.st International Conference Energy Systems Engineering
ıcese'17
Hüseyin DEMİREL
M. Kadir KARAGÖZ
Bilgehan ERKAL