A single-sensor PV system featuring an innovative auto-adjustment variable step-size MPPT method

Autor:	Yie-Tone Chen, Zhi-Hao Lai, Yi-Cheng Jhang, Ruey-Hsun Liang
Rok vydání:	2015
Předmět:	Engineering Digital signal processor business.industry Photovoltaic system General Engineering Signal Maximum power point tracking Variable (computer science) Control theory Electronic engineering Transient (oscillation) business Constant (mathematics) Pulse-width modulation
Zdroj:	Journal of the Chinese Institute of Engineers. 38:866-877
ISSN:	2158-7299 0253-3839
DOI:	10.1080/02533839.2015.1047798
Popis:	This paper proposes a new maximum power point tracking (MPPT) method by introducing an auto-adjustment variable step-size algorithm that uses only a single sensor. This novel scheme solves the problem encountered by traditional variable step-size methods, which require an additional calculation of the constant value. The naturally varying trend of the proposed function in this paper is applied to serve as the auto-adjustment variable step size in the MPPT algorithm, thereby enabling the system to provide reliable transient and steady-state responses even during sharp weather changes. Furthermore, the proposed new MPPT method can also be applied in the presence of a partial shadow condition. The digital signal processor handles the feedback value and directs the PWM signal to drive the switch of the converter. The simulation and experimental results verify the reliable transient and steady-state performance of the PV system with the proposed method.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::784245b0268e0a42b8010f76bed2db66 https://doi.org/10.1080/02533839.2015.1047798 Zobrazit plný text záznamu