An Enhanced Equivalent Circuit Model of Vanadium Redox Flow Battery Energy Storage Systems Considering Thermal Effects

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Xiong, BinyuWuhan University of Technology (author)

An Enhanced Equivalent Circuit Model of Vanadium Redox Flow Battery Energy Storage Systems Considering Thermal Effects

Article/chapterEnglish2019

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2019
electronicrdacarrier

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LIBRIS-ID:oai:research.chalmers.se:30a6ba6b-0686-426f-8ac1-c6b047fb20c3
https://research.chalmers.se/publication/520847URI
https://doi.org/10.1109/ACCESS.2019.2952212DOI

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Language:English
Summary in:English

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Subject category:ref swepub-contenttype

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Thermal issue is one of the major concerns for safe, reliable, and efficient operation of the vanadium redox flow battery (VRB) energy storage systems. During the design of the operational strategy for a grid-connected VRB system, a suitable mathematical model is needed to predict the dynamic behaviors under various operating conditions. However, conventional VRB models usually neglect the impact of temperature variations on system performance. This work develops an enhanced VRB model with the consideration of the coupling effects between the electrochemical and the thermal behaviors. The proposed model consists of two equivalent circuits. First, the electrochemical behaviors of the VRB are modeled by a second-order RC network taking account of the effects of concentration variation of the vanadium ions and the electrochemical activation. Second, a third-order Cauer network is used to model the heat transfer process in the VRB system, and the dynamic thermal behaviors of stacks, pipes and heat exchangers are characterized. Well-designed experiments and particle swarm optimization algorithm are use to identify the parametric values of the developed model. The proposed modeling method was validated experimentally using a 5kW/3kWh VRB platform, and the results show that the model is capable of accurately predicting the VRB performance under variable temperature conditions. The developed coupled electro-thermal model is then used for simulating and analyzing the performance of a VRB system operated in conjunction with a wind power plant under real-world conditions.

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 Datorsystem hsv//swe
ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Computer Systems hsv//eng
coupled electro-thermal model
Vanadium redox ow battery
thermal model
battery energy storage systems
Cauer network

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

Yang, YesenWuhan University of Technology (author)
Tang, JinruiWuhan University of Technology (author)
Li, Yang,1984Wuhan University of Technology(Swepub:cth)yanu (author)
Wei, ZhongbaoBeijing Institute of Technology (author)
Su, YixinWuhan University of Technology (author)
Zhang, QingyongWuhan University of Technology (author)
Wuhan University of TechnologyBeijing Institute of Technology (creator_code:org_t)

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In:IEEE Access7, s. 162297-1623082169-35362169-3536

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By the author/editor: Xiong, Binyu; Yang, Yesen; Tang, Jinrui; Li, Yang, 1984; Wei, Zhongbao; Su, Yixin; show more...; Zhang, Qingyong; show less...

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

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Electrical Engin ...; and Computer Systems

Articles in the publication: IEEE Access

By the university: Chalmers University of Technology

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