A Novel Approach Based Incremental Conductance Method for MPPT Strategy of PV Systems Considering Partial Shading Conditions

The main advantages in terms of a simple algorithm, easy to use, fast maximum power point tracking (MPPT) speed of the incremental conductance (InC) and perturbation and observation (P&O) algorithms have been adopted in the literature. Besides, the oscillation phenomenon around the maximum power...

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Bibliographic Details
Published in:Electric power components and systems 2021-10, Vol.49 (16-17), p.1348-1362
Main Authors: Ngo, Sy, Ngo, Thanh-Dong, Nguyen, Cao-Tri, Chiu, Chian-Song
Format: Article
Language:English
Subjects:
Algorithms
Amplitudes
boost converter
Illuminance
Incremental conductance
incremental conductance (InC)
maximum power point (MPP)
Maximum power tracking
partial shading conditions (PSCs) photovoltaic (PV)
Perturbation
Shading
Steady state
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Summary:The main advantages in terms of a simple algorithm, easy to use, fast maximum power point tracking (MPPT) speed of the incremental conductance (InC) and perturbation and observation (P&O) algorithms have been adopted in the literature. Besides, the oscillation phenomenon around the maximum power point (MPP) is a major drawback of these typical algorithms. More specifically, these traditional algorithms failed to find the global maximum power peak when the PV system was operating under partial shading conditions where multiple peaks appeared on the PV curve characteristic. Therefore, a new approach based on the conventional InC algorithm is proposed in this paper. By evenly dividing the search area at the early stage, this proposed method avoids the regional traps encountered by the traditional InC algorithm. Then select the regions where there is a high probability of finding the global MPP to implement the conventional InC approach. After finishing this process, the location with the best power is selected and the MPP search is further performed using the various step-size InC algorithm for the final stage. With this improvement, the steady-state oscillation amplitude of the proposed method is significantly reduced. The implementation process and simulation results show that the proposed method has key advantages in terms of simplicity, fast convergence speed, and reduced steady-state oscillation amplitude. Simulation and experimental results are also compared with the conventional P&O and PSO methods to demonstrate the effectiveness of the proposed method in both uniform illuminance and partial shading conditions.
ISSN:1532-5008
1532-5016
DOI:10.1080/15325008.2022.2129859