TY - JOUR
T1 - Control of electrolyte flow rate for the vanadium redox flow battery by gain scheduling
AU - Li, Yifeng
AU - Zhang, Xinan
AU - Bao, Jie
AU - Skyllas-Kazacos, Maria
PY - 2017/12/1
Y1 - 2017/12/1
N2 - In this article, a gain scheduling approach is proposed to control the electrolyte flow rate for a VRB system. The flow rate is regulated to ensure that the open circuit voltage difference before and after cell stack tracks a given reference trajectory. The nonlinear process model is linearised around three different operating points with different state of charge. A set of PI controllers have been designed based on the linearised process model for both charging and discharging. To improve the control performance, a feedforward controller is designed to compensate the effect of current fluctuations. Simulation studies have been conducted under different operating conditions to demonstrate the performance of the proposed approach.
AB - In this article, a gain scheduling approach is proposed to control the electrolyte flow rate for a VRB system. The flow rate is regulated to ensure that the open circuit voltage difference before and after cell stack tracks a given reference trajectory. The nonlinear process model is linearised around three different operating points with different state of charge. A set of PI controllers have been designed based on the linearised process model for both charging and discharging. To improve the control performance, a feedforward controller is designed to compensate the effect of current fluctuations. Simulation studies have been conducted under different operating conditions to demonstrate the performance of the proposed approach.
KW - Electrolyte flow rate control
KW - Gain scheduling
KW - Vanadium redox flow battery
UR - http://www.scopus.com/inward/record.url?scp=85045795495&partnerID=8YFLogxK
U2 - 10.1016/j.est.2017.10.005
DO - 10.1016/j.est.2017.10.005
M3 - Article
AN - SCOPUS:85045795495
VL - 14
SP - 125
EP - 133
JO - Journal of Energy Storage
JF - Journal of Energy Storage
SN - 2352-152X
ER -