Design of A Two-Stage Control Strategy of Vanadium Redox Flow Battery Energy Storage Systems for Grid Application

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Xiong, BinyuWuhan University of Technology (author)

Design of A Two-Stage Control Strategy of Vanadium Redox Flow Battery Energy Storage Systems for Grid Application

Article/chapterEnglish2022

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2022
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LIBRIS-ID:oai:research.chalmers.se:69631e92-0717-44bc-bb18-0a740eb8a7ef
https://doi.org/10.1109/TSTE.2022.3181751DOI
https://research.chalmers.se/publication/532420URI

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Language:English
Summary in:English

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SwePubSwePub

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Subject category:art swepub-publicationtype
Subject category:ref swepub-contenttype

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The low energy conversion efficiency of the vanadium redox flow battery (VRB) system poses a challenge to its practical applications in grid systems. The low efficiency is mainly due to the considerable overpotentials and parasitic losses in the VRB cells when supplying highly dynamic charging and discharging power for grid regulation. Apart from material and structural advancements, improvements in operating strategies are equally essential for achieving the expected high-performance VRB system, although an optimized solution has not been fully exploited in the existing studies. In this paper, a two-stage control strategy is thus developed based on a proposed and experimental validated multi-physics multi-time-scale electro-thermo-hydraulic VRB model. Specifically, in the first stage, the optimal flow rate of the VRB is obtained based on online optimization to reduce parasitic loss and enhance instantaneous system efficiency, and the result serves as the set point of a feedback flow rate controller. In the second stage, dual time scales are specifically considered. And the current and flow rate controllers are designed to meet the highly varying power demands for grid-connected applications. The effectiveness of the proposed control strategy is verified under a scenario to smooth wind power generation. Comparative studies show that compared to the prevailing approaches, higher efficiency can be achieved in tracking the theoretical optimal power profiles for online battery control.

Subject headings and genre

TEKNIK OCH TEKNOLOGIER Maskinteknik Energiteknik hsv//swe
ENGINEERING AND TECHNOLOGY Mechanical Engineering Energy Engineering hsv//eng
TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Reglerteknik hsv//swe
ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Control Engineering hsv//eng
TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Annan elektroteknik och elektronik hsv//swe
ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Other Electrical Engineering, Electronic Engineering, Information Engineering hsv//eng
Redox
Vanadium
Renewable energy sources
Electrolytes
optimal operation
multi-physics model
Power demand
control strategy
Resistance
system efficiency
Vanadium redox flow battery

Added entries (persons, corporate bodies, meetings, titles ...)

Tang, JinruiWuhan University of Technology (author)
Li, Yang,1984Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)yanu (author)
Xie, ChangjunWuhan University of Technology (author)
Wang, Zirui (author)
Zhang, XinanUniversity of Western Australia (author)
Gooi, Hoay BengNanyang Technological University (author)
Wuhan University of TechnologyChalmers tekniska högskola (creator_code:org_t)

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In:IEEE Transactions on Sustainable Energy13:4, s. 2079-20911949-30291949-3037

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By the author/editor: Xiong, Binyu; Tang, Jinrui; Li, Yang, 1984; Xie, Changjun; Wang, Zirui; Zhang, Xinan; show more...; Gooi, Hoay Beng; show less...

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ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Mechanical Engin ...; and Energy Engineeri ...

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