Design of an energy storage system based on vanadium redox flow battery considering a simplified model of VRB

2017 ◽  
Vol 36 (1) ◽  
pp. 153-167 ◽  
Author(s):  
Jiazhi Lei ◽  
Qingwu Gong ◽  
Jun Ye
Keyword(s):  
Energy Storage ◽  
Power Flow ◽  
Storage System ◽  
Energy Storage System ◽  
Vanadium Redox Flow Battery ◽  
Constant Current ◽  
Simplified Model ◽  
Content Type ◽  
Bidirectional Power Flow ◽  
Vanadium Redox

Purpose This paper aims to propose a simplified model of vanadium redox flow batteries (VRBs) for VRB energy storage system (ESS) design considering the operational characteristics of VRB, and a VRB ESS, considering the low terminal voltage of VRB, was presented. Design/methodology/approach According to the designed topology of VRB ESS and the simplified model of VRB, a small perturbation analysis method was used to establish the transfer function of VRB ESS, and the controller parameters of VRB ESS under constant charging and discharging current were designed. Findings Test results have demonstrated that this designed VRB ESS has fast response, small overshoot, strong adaptation and high steady precision, which strongly verified the reasonable design. Practical implications This simplified model of VRB can be suitably used for VRB ESS design. This designed VRB ESS realized the bidirectional power flow of VRB and AC grid. In this designed VRB ESS, phase-shifted full-bridge converter and a single-phase inverter were used and VRB was charged and discharged under constant current. Originality/value The paper presents a topology of VRB ESS which can realize the bidirectional power flow of VRB and AC grid. Considering the complexity of VRB model, a simplified model of VRB was proposed for the controller parameters design of VRB ESS, and this method can be used in application.

scholarly journals Optimal Charging of Vanadium Redox Flow Battery with Time-Varying Input Power

Batteries ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 20 ◽  
Author(s):  
Md. Akter ◽  
Yifeng Li ◽  
Jie Bao ◽  
Maria Skyllas-Kazacos ◽  
Muhammed Rahman
Keyword(s):  
Energy Storage ◽  
Storage System ◽  
Energy Storage System ◽  
Input Power ◽  
Vanadium Redox Flow Battery ◽  
Time Varying ◽  
Redox Flow Battery ◽  
Flow Battery ◽  
Charging Current ◽  
Vanadium Redox

The battery energy storage system has become an indispensable part of the current electricity network due to the vast integration of renewable energy sources (RESs). This paper proposes an optimal charging method of a vanadium redox flow battery (VRB)-based energy storage system, which ensures the maximum harvesting of the free energy from RESs by maintaining safe operations of the battery. The VRB has a deep discharging capability, long cycle life, and high energy efficiency with no issues of cell-balancing, which make it suitable for large-scale energy storage systems. The proposed approach determines the appropriate charging current and the optimal electrolyte flow rate based on the available time-varying input power. Moreover, the charging current is bounded by the limiting current, which prevents the gassing side-reactions and protects the VRB from overcharging. The proposed optimal charging method is investigated by simulation studies using MATLAB/Simulink.

Modeling and Power Control of Energy Storage System for Wind Park Based on Vanadium Redox Flow Battery

2013 ◽  
Vol 433-435 ◽  
pp. 1197-1200
Author(s):  
Xiao Dong Wang ◽  
Lei Zhang ◽  
Hong Fang Xie ◽  
Ying Ming Liu ◽  
Xiao Wen Song
Keyword(s):  
Energy Storage ◽  
Wind Power ◽  
Wind Farm ◽  
Storage System ◽  
Energy Storage System ◽  
Vanadium Redox Flow Battery ◽  
Flow Battery ◽  
Low Pass ◽  
Wind Park ◽  
Vanadium Redox

With the rapid increase of the installed capacity of wind power, the output power fluctuations of wind park had a great influence on the stability of the grid. Energy storage system in the wind farm can smooth the fluctuations of wind power effectively, and improve grid ability to admit wind power. The model of energy storage system based on vanadium redox flow battery was builded according to the state of charge, voltage and current characteristics. A kind of power control strategy with low-pass filtering was designed based on the new system model. Simulation results show that this model is more closer to the actual vanadium flow battery characteristics, the control strategy based on low-pass filtering can stabilize the output fluctuations of the wind farm power.

scholarly journals Combined control of a flywheel energy storage system and a vanadium redox flow battery for wind energy applications in microgrids

DYNA ◽  
2017 ◽  
Vol 84 (202) ◽  
pp. 230-238 ◽  
Author(s):  
Gaston Orlando Suvire ◽  
Leonardo Javier Ontiveros ◽  
Pedro Enrique Mercado
Keyword(s):  
Energy Storage ◽  
Storage System ◽  
Energy Storage System ◽  
Vanadium Redox Flow Battery ◽  
Redox Flow Battery ◽  
Flywheel Energy Storage System ◽  
Energy Applications ◽  
Combined Control ◽  
La Red ◽  
Vanadium Redox

La incorporación de potencia eólica en microredes está creciendo progresivamente. Esta integración puede introducir problemas en la dinámica y calidad de potencia del sistema eléctrico debido a fluctuaciones del viento. Este trabajo propone un controlador compuesto por un sistema de acondicionamiento de potencia (PCS), un almacenador flywheel (FESS) y una batería de flujo redox de vanadio (VRFB) para mitigar problemas introducidos por la generación eólica en microredes. Se presenta un modelo del PCS/FESS-VRFB y se propone un método para controlar la potencia intercambiada entre el controlador y la red eléctrica. El método tiene dos modos: nivelación de potencia y control de frecuencia. A través de simulaciones, se estudia el desempeño del PCS/FESS-VRFB cuando opera con generación eólica en microredes. Los resultados demuestran un adecuado desempeño del método propuesto y una alta efectividad para nivelar las fluctuaciones de potencia eólica y proveer soporte para el control de frecuencia de la microred.

Design and Research of Integrated PV and Storage Grid-Connected Generation System

2014 ◽  
Vol 1070-1072 ◽  
pp. 24-29
Author(s):  
Xiao Di Qin ◽  
Rong Rong Zhou ◽  
Lie Xia ◽  
Liang Hui Xu
Keyword(s):  
Energy Storage ◽  
System Integration ◽  
Tracking System ◽  
Storage System ◽  
Energy Storage System ◽  
Vanadium Redox Flow Battery ◽  
Generation System ◽  
Pv System ◽  
Design Scheme ◽  
And Storage

Based on practical project and application, the design scheme of small capacity of integrated PV and storage grid-connected generation system is presented in this paper. For demonstrative and experimental purpose in this project, it includes several typical PV modules, tracking system and grid-connected inverters. Entire design scheme covers system integration, grid-connected solution, PV array and bracket, monitoring system, energy storage system, and etc. Configuration and application prospect of energy storage system in grid-connected PV system are mainly introduced. The characteristics of lithium battery and vanadium redox flow battery, as well as their application in the field of distributed power generation are researched.

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