pp. 2959-2969
S&M2667 Research Paper of Special Issue https://doi.org/10.18494/SAM.2021.3226 Published in advance: June 11, 2021 Published: August 31, 2021 Novel Control Strategy to Improve Photovoltaic System Performance under Low Irradiance Level [PDF] Chang-Hua Lin, Hwa-Dong Liu, and Shiue-Der Lu (Received December 17, 2020; Accepted June 8, 2021) Keywords: maximum power point tracking, solar power, irradiance change per unit area threshold control
A novel algorithm for maximum power point tracking (MPPT) in solar power generation systems was proposed and compared with the conventional methods of hill climbing (HC) and perturbation and observation (P&O) algorithms. The two conventional algorithms are prone to divergence under low irradiance levels (<150 W/m2), resulting in difficulties in MPPT. The MPPT technique proposed in this study integrates irradiance change per unit area threshold control (ICPUATC) into the P&O algorithm. The proposed algorithm can facilitate quick and precise convergence at the maximum power point (MPP) for a photovoltaic module under a low irradiance level of 65 W/m2. The proposed and HC algorithms were compared for irradiance levels of 480, 140, and 65 W/m2, and the proposed algorithm consistently yielded better results than did the HC algorithm.
Corresponding author: Shiue-Der LuThis work is licensed under a Creative Commons Attribution 4.0 International License. Cite this article Chang-Hua Lin, Hwa-Dong Liu, and Shiue-Der Lu, Novel Control Strategy to Improve Photovoltaic System Performance under Low Irradiance Level, Sens. Mater., Vol. 33, No. 8, 2021, p. 2959-2969. |