A Simple Checking Algorithm with Perturb and Observe Maximum Power Point Tracking for Partially Shaded Photovoltaic System
Abstract: This paper presents
a simple checking algorithm for maximum power point tracking (MPPT) technique
for Photovoltaic (PV) system using Perturb and Observe (P&O) algorithm. The
main benefit of this checking algorithm is the simplicity and efficiency of the
system whose duty cycle produced by the MPPT is smoother and changes faster
according to maximum power point (MPP). This checking algorithm can determine
the maximum power first before the P&O algorithm takes place to identify
the voltage at MPP (V MPP ), which is needed to calculate the duty cycle for
the boost converter. To test the effectiveness of the algorithm, a simulation
model of PV system has been carried out using MATLAB/Simulink under different
level of irradiation; or in other words partially shaded condition of PV array.
The results from the system using the proposed approach prove to have faster
response and low ripple. Besides, the results are close to the desired outputs
and exhibit an approximately 98.25% of the system efficiency. On the other
hand, the system with conventional P&O MPPT seems to be unstable and has
higher percentage of error. In summary, the proposed method is useful under
varying level of irradiation with higher efficiency of the system.
Keywords: maximum power point
tracking, perturb and observe algorithm, solar energy, solar photovoltaic,
checking algorithm
Author: Rozana Alik, Awang
Jusoh, Tole Sutikno
Journal Code: jptkomputergg160166
