热力发电2025，Vol.54Issue(3)：12-21,10.DOI:10.19666/j.rlfd.202408198
多工况下固体氧化物燃料电池短堆变载特性研究
Study on variable load characteristics of a solid oxide fuel cell stack under multiple operating conditions
摘要
Abstract
Solid oxide fuel cell(SOFC)is a promising energy conversion device.It has the advantages of non-pollution,high energy utilization rate,and good fuel adaptability.However,SOFC often needs to be operated under variable load conditions,which leads to the problems of shorten service life and performance degradation.The study of the relationship between the variable load characteristics of SOFC and its operating conditions is helpful to improve the output performance of the stack,extend its service life,and formulate a reasonable control strategy.A 100 W SOFC short stack testing system was developed to experimentally investigate the variable load characteristics of the SOFC stack under multiple operating conditions.The results show that,increasing the operating temperature can reduce the ohmic resistance and total polarization resistance of the fuel cell stack,thereby enhancing the stack's steady-state output performance and dynamic response performance.Increasing the hydrogen flow rate in the medium to high current range can reduce the concentration polarization resistance,thereby effectively enhancing the stack's peak output performance and dynamic response performance.Increasing the air flow rate has a smaller effect on the performance improvement of the stack.Under the constant flow utilization strategy,the response voltage immediately falls within the range of±5%of the final voltage.By varying the load with constant voltage,the response current can smoothly reach a stable value.Compared with the constant flow strategy and constant current load variation method,the stack shows better dynamic response performance under the constant flow utilization strategy and constant voltage load variation method.关键词
固体氧化物燃料电池/电堆/变载特性/运行条件/运行策略Key words
SOFC/cell stack/variable load characteristics/operating condition/operation strategy引用本文复制引用
马秦慧,陈钢,范光涛,罗书德,於震跃,朱波,徐心海..多工况下固体氧化物燃料电池短堆变载特性研究[J].热力发电,2025,54(3):12-21,10.基金项目
广东省自然科学基金面上项目(2023A1515012079) （2023A1515012079）
深圳市发改委工程研究中心项目(XMHT20220103004) General Project of Guangdong Natural Science Foundation(2023A1515012079) （XMHT20220103004）
Project of Shenzhen Development and Reform Commission Engineering Research Center(XMHT20220103004) （XMHT20220103004）
