Novel Control Strategy to Improve Photovoltaic System Performance under Low Irradiance Level

Chang Hua Lin, Hwa Dong Liu, Shiue Der Lu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)2959-2969
Number of pages11
JournalSensors and Materials
Volume33
Issue number8
DOIs
Publication statusPublished - 2021
Externally publishedYes

Keywords

  • irradiance change per unit area threshold control
  • maximum power point tracking
  • solar power

ASJC Scopus subject areas

  • Instrumentation
  • General Materials Science

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