Abstract:
The output power of a PV array is dependent on environmental factors such as solar
irradiation and temperature, So, it has a non-linear I-V characteristic. Maximum
Power Point (MPP) is a point on the I-V, P-V characteristic curve of a PV array
where the PV device generates maximum output power. The location of MPP shifts
as the climate changes. MPPT's aim is to keep the solar operating voltage as similar
to MPP as possible under changing environmental conditions. They must run at their
MPPT considering the inhomogeneous shift in environmental conditions in order to
continuously gather the full power from the PV array. here the most commonly used
MPPT algorithms for PV applications are illustrated because they are easy to
implement which are Perturb and Observe (P&O), Hill Climbing (HC) and
Incremental Conductance (INC). In this paper, the applications of those three MPPT
algorithms in PV systems at linear and nonlinear loads have been investigated.
Comparative analysis has been done and the efficient one based on different testing
scenarios has been determined based on output results
