An economic model predictive control-based flexible power point tracking strategy for photovoltaic power generation

In a high solar-power-penetration power grid, photovoltaic (PV) power generation requires to run in a flexible power point tracking (FPPT) mode. However, traditional hierarchical control-based FPPT strategy ignores the dynamic economic performance of PV power generation. To address this issue, an ad...

Celý popis

Uloženo v:
Podrobná bibliografie
Vydáno v:Energy (Oxford) Ročník 283; s. 128993
Hlavní autoři: Liu, Xiangjie, Zhu, Zheng, Kong, Xiaobing, Ma, Lele, Lee, Kwang Y.
Médium: Journal Article
Jazyk:angličtina
Vydáno: Elsevier Ltd 15.11.2023
Témata:
algorithms
econometric models
Economic model predictive control
economic performance
electric potential difference
Flexible power point tracking
Photovoltaic power generation
power generation
solar energy
system optimization
Photovoltaic power generation
Flexible power point tracking
Economic model predictive control
ISSN:0360-5442
On-line přístup:Získat plný text
Tagy: Přidat tag
Žádné tagy, Buďte první, kdo vytvoří štítek k tomuto záznamu!
Popis
Shrnutí:In a high solar-power-penetration power grid, photovoltaic (PV) power generation requires to run in a flexible power point tracking (FPPT) mode. However, traditional hierarchical control-based FPPT strategy ignores the dynamic economic performance of PV power generation. To address this issue, an advanced FPPT strategy based on economic model predictive control (EMPC) is proposed to achieve higher dynamic economic performance. This strategy integrates the PV voltage reference calculation, PV voltage control, and pulse width modulation into one optimal control framework, utilizing the economic indices of the PV power generation system (PVPGS) as the cost function to achieve its economic optimization and power tracking. Due to the strong nonlinearity in the PVPGS, the EMPC optimization problem is non-convex, leading to a local optimum. A mixed integer nonlinear programming algorithm is developed, which utilizes a finite number of converter switching states for obtaining the global optimum. Simulations demonstrate that the EMPC-based FPPT strategy enhances the dynamic economic performance compared to the hierarchical control-based FPPT strategy. •An economic model predictive control strategy is proposed for PV power generation.•A converter-based model for the PV power generation system is constructed.•An efficient algorithm is proposed to solve online non-convex optimization problem.•The proposed scheme enhances dynamic economic performance for PV power generation.
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0360-5442
DOI:10.1016/j.energy.2023.128993