Design of a Bidirectional Energy Storage System for a Vanadium Redox Flow Battery in a Microgrid with SOC Estimation
Abstract
:1. Introduction
2. Topology of a VRB ESS in a Microgrid
3. Vanadium Redox Flow Battery
3.1. Structure and Operating Principles of the VRB
3.2. Simplified Method for SOC Estimation
3.3. Proposed SOC Estimation Method
3.4. Equivalent of VRB
4. Design of an Energy Storage System
4.1. Structure of an Energy Storage System
4.2. Control Strategy of Energy Storage System
4.3. Parameters Design of Controller
5. Simulation
5.1. Simulation Model of the VRB
5.2. Simulation Results
6. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Name | Value |
---|---|
number of cells Ncell | 39 |
Req,charge/Ω | 0.047 |
Req,discharge/Ω | 0.049 |
electrolyte flowrate Q/(L·s−1) | 2 |
initial concentration of H+/(mol·L−1) | 6 |
electrolyte vanadium concentration/(mol·L−1) | 2 |
tank size Vtk/L | 260 |
initial concentration of vanadium/(mol·L−1) | 1 |
Name | Value |
---|---|
inductance Lf/μH | 200 |
capacitor Cf/μF | 100 |
turns ratio n of Transformer T | 1:8.35 |
leakage inductance Llk/μH | 25 |
Switching frequency fs/kHz | 5 |
filter inductance L/μH | 80 |
capacitor C/μF | 20 |
Resistance of capacitance Rc/Ω | 0.2 |
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Gong, Q.; Lei, J. Design of a Bidirectional Energy Storage System for a Vanadium Redox Flow Battery in a Microgrid with SOC Estimation. Sustainability 2017, 9, 441. https://doi.org/10.3390/su9030441
Gong Q, Lei J. Design of a Bidirectional Energy Storage System for a Vanadium Redox Flow Battery in a Microgrid with SOC Estimation. Sustainability. 2017; 9(3):441. https://doi.org/10.3390/su9030441
Chicago/Turabian StyleGong, Qingwu, and Jiazhi Lei. 2017. "Design of a Bidirectional Energy Storage System for a Vanadium Redox Flow Battery in a Microgrid with SOC Estimation" Sustainability 9, no. 3: 441. https://doi.org/10.3390/su9030441