质子交换膜燃料电池气-热-电特性及其协同控制策略研究OA

[Objectives]With the gradual implementation of the"dual carbon"policy,the use of clean energy has been strongly promoted in recent years.Among them,the proton exchange membrane fuel cell(PEMFC),which uses hydrogen as fuel,has become an important trend in energy system development,and hydrogen fuel cell systems have therefore been widely promoted and applied.To extend the service life of PEMFC systems and improve their output performance,existing control strategies for fuel cell systems are reviewed and summarized.[Methods]The energy flow characteristics of fuel cell are described.In view of the three major control strategies that consider the intrinsic characteristics of PEMFC systems—air supply control,temperature control,and cold-start control—this study reviews and summarizes existing control strategies in light of the nonlinear,time-varying,strongly coupled,and multi-input-multi-output characteristics of the system,and analyzes and compares the advantages and disadvantages of various control strategies.[Conclusions]Kalman filter control enables real-time estimation and compensation of disturbances in the air supply system.Model predictive control can effectively address the large temperature lag in existing studies.For cold-start control,a stepped current density loading mode considering uncertainty in membrane water content can effectively reduce the cold-start time and improve output characteristics.These findings provide a theoretical basis for the development of hydrogen energy and PEMFC.