Solid oxide fuel cells;
Generalized predictive control;
Fractional order dynamic model;
Forgetting factor recursive least squares;
3-DIMENSIONAL THERMOFLUID;
FEEDBACK;
D O I:
10.1016/j.jpowsour.2010.07.053
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
An adaptive generalized predictive control (GPC) system is presented for the management of output power of solid oxide fuel cells (SOFCs). The dynamics of SOFC output power are characterized by a fractional order model, which is more accurate than an integer order model to depict the dynamics; the fractional order dynamic model is taken as the controlled plant of the GPC system. The GPC algorithm adopts a linear approximation method that uses a linear predictive model to approximate locally and dynamically the nonlinear dynamics of SOFC output power at each sampling period. Moreover, the parameters of the predictive model are identified online to overcome the time-varying dynamics of SOFC output power via introducing a forgetting factor recursive least squares (FFRLS) algorithm. Finally, according to the future power outputs predicted by the predictive model, an optimal current control sequence is obtained by solving a multistage cost function. The results demonstrate that the dynamic responses of the GPC system are quick and smooth, and the change of the current control sequence is slow and smooth. The quick and smooth dynamics are important for satisfying the rapid load following of SOFC generating systems and for prolonging the lifetime of SOFC stack. (C) 2010 Elsevier B.V. All rights reserved.
机构:
Nanchang Inst Aeronaut Technol, Dept Test & Control Engn, Nanchang 330034, Peoples R ChinaNanchang Inst Aeronaut Technol, Dept Test & Control Engn, Nanchang 330034, Peoples R China
Ding, F
Chen, TW
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机构:Nanchang Inst Aeronaut Technol, Dept Test & Control Engn, Nanchang 330034, Peoples R China
机构:
Technion Israel Inst Technol, Wolfson Dept Chem Engn, PSE Res Grp, IL-32000 Haifa, IsraelTechnion Israel Inst Technol, Wolfson Dept Chem Engn, PSE Res Grp, IL-32000 Haifa, Israel
Golbert, J
Lewin, DR
论文数: 0引用数: 0
h-index: 0
机构:
Technion Israel Inst Technol, Wolfson Dept Chem Engn, PSE Res Grp, IL-32000 Haifa, IsraelTechnion Israel Inst Technol, Wolfson Dept Chem Engn, PSE Res Grp, IL-32000 Haifa, Israel
机构:
Nanchang Inst Aeronaut Technol, Dept Test & Control Engn, Nanchang 330034, Peoples R ChinaNanchang Inst Aeronaut Technol, Dept Test & Control Engn, Nanchang 330034, Peoples R China
Ding, F
Chen, TW
论文数: 0引用数: 0
h-index: 0
机构:Nanchang Inst Aeronaut Technol, Dept Test & Control Engn, Nanchang 330034, Peoples R China
机构:
Technion Israel Inst Technol, Wolfson Dept Chem Engn, PSE Res Grp, IL-32000 Haifa, IsraelTechnion Israel Inst Technol, Wolfson Dept Chem Engn, PSE Res Grp, IL-32000 Haifa, Israel
Golbert, J
Lewin, DR
论文数: 0引用数: 0
h-index: 0
机构:
Technion Israel Inst Technol, Wolfson Dept Chem Engn, PSE Res Grp, IL-32000 Haifa, IsraelTechnion Israel Inst Technol, Wolfson Dept Chem Engn, PSE Res Grp, IL-32000 Haifa, Israel