Research on control strategy of maximum power tracking variable step size perturbation & observation method for photovoltaic power generation system

Abstract There are three defects of traditional perturbation and observation method in the maximum power tracking control process of photovoltaic power generation systems, which are oscillation, misjudgment and poor tracking accuracy. Thus, a variable step perturbation and observation method based o...

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Bibliographic Details
Published inIOP conference series. Earth and environmental science Vol. 675; no. 1; p. 12096
Main Authors Gao, Zhen, Kai, Fei, Xi, Ziqiang
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.02.2021
Subjects
Algorithms
Electric converters
Electric power generation
Maximum power tracking
Perturbation
Photovoltaics
Tracking control
Voltage converters (DC to DC)
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Summary:Abstract There are three defects of traditional perturbation and observation method in the maximum power tracking control process of photovoltaic power generation systems, which are oscillation, misjudgment and poor tracking accuracy. Thus, a variable step perturbation and observation method based on power prediction is proposed for three-level DC/DC converters in this paper, which effectively solved oscillation, misjudgment, tracking accuracy problems, improving the tracking speed and precision of the algorithm, and the verification results of the maximum power tracking algorithm based on the three-level DC/DC converter structure has also been indicated.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/675/1/012096