水冷燃料电池空气供给系统控制策略研究  

Control Strategy of Air Supply System for Water-Cooled Fuel Cell

作　　者：解同辰 肖铎 XIE Tongchen;XIAO Duo(College of Control Science and Engineering,Zhejiang University,Hangzhou 310027,China;Zhejiang University City College,Hangzhou 310015,China)

机构地区：[1]浙江大学控制科学与工程学院,浙江杭州310027 [2]浙大城市学院,浙江杭州310015

出　　处：《车用发动机》2023年第4期72-79,共8页Vehicle Engine

基　　金：浙江省重点研发计划项目(2019C01150)。

摘　　要：针对水冷质子交换膜燃料电池空气供给系统多参数多变量的控制特性,提出一种基于反馈线性化的滑模自抗扰控制策略。建立面向控制的空气供给系统四阶非线性状态空间模型,利用反馈线性化将系统模型解耦为阴极压力通道和过氧比通道两个独立线性模型,针对两个通道设计滑模自抗扰控制器。进行Matlab仿真,结果表明:提出的控制策略在负载电流变化条件下对电堆阴极压力和过氧比期望值实现准确跟踪,相比于传统控制策略阴极压力调节时间缩短30%以上,阴极压力超调量减少47%以上,过氧比调节时间缩短67%以上。According to the multi-parameter and multi-variable control characteristics of air supply system for water-cooled proton exchange membrane fuel cell,a sliding mode active disturbance rejection control strategy was proposed based on feedback linearization theory.The control-oriented fourth-order nonlinear state space model of air supply system was established.Feedback linearization was used to decouple the whole system into two linear subsystems of cathode pressure and oxygen excess ratio.The sliding mode active disturbance rejection controllers were further designed for the two linear systems.The Matlab simulation was finally carried out.The results show that the proposed control strategy can achieve accurate tracking of the expected value control of stack cathode pressure and oxygen excess ratio under the variable load current.Compared with the traditional control strategies,the adjustment time and the overshoot of cathode pressure reduces by more than 30%and 47%respectively,and the adjustment time of oxygen excess ratio shortens by more than 67%.

关 键 词：燃料电池 空气供给系统 反馈线性化 自抗扰控制 滑模控制 

分 类 号：TK91[动力工程及工程热物理]