Data-driven nonlinear control of a solid oxide fuel cell system  

作　　者：李益国 沈炯 K.Y.Lee 刘西陲 费文哲 

机构地区：[1]Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education(School of Energy and Environment,Southeast University) [2]Department of Electrical and Computer Engineering,Baylor University,Waco,TX 76798-7356,USA

出　　处：《Journal of Central South University》2012年第7期1892-1901,共10页中南大学学报（英文版）

基　　金：Projects(51076027,51036002) supported by the National Natural Science Foundation of China;Project(20090092110051) supported by the Doctoral Fund of Ministry of Education of China

摘　　要：Solid oxide fuel cells (SOFCs) are considered to be one of the most important clean,distributed resources. However,SOFCs present a challenging control problem owing to their slow dynamics,nonlinearity and tight operating constraints. A novel data-driven nonlinear control strategy was proposed to solve the SOFC control problem by combining a virtual reference feedback tuning (VRFT) method and support vector machine. In order to fulfill the requirement for fuel utilization and control constraints,a dynamic constraints unit and an anti-windup scheme were adopted. In addition,a feedforward loop was designed to deal with the current disturbance. Detailed simulations demonstrate that the fast response of fuel flow for the current demand disturbance and zero steady error of the output voltage are both achieved. Meanwhile,fuel utilization is kept almost within the safe region.Solid oxide fuel cells （SOFCs） are considered to be one of the most important clean, distributed resources. However, SOFCs present a challenging control problem owing to their slow dynamics, nonlinearity and tight operating constraints. A novel data-driven nonlinear control strategy was proposed to solve the SOFC control problem by combining a virtual reference feedback tuning （VRFT） method and support vector machine. In order to fulfill the requirement for fuel utilization and control constraints, a dynamic constraints unit and an anti-windup scheme were adopted. In addition, a feedforward loop was designed to deal with the current disturbance. Detailed simulations demonstrate that the fast response of fuel flow for the current demand disturbance and zero steady error of the output voltage are both achieved. Meanwhile, fuel utilization is kept almost within the safe region.

关 键 词：solid oxide fuel cell （SOFC） data-driven method virtual reference feedback tuning （VRFT） support vector machine（SVM） ANTI-WINDUP 

分 类 号：TM911.4[电气工程—电力电子与电力传动]