综合智慧能源 ›› 2024, Vol. 46 ›› Issue (9): 1-8.doi: 10.3969/j.issn.2097-0706.2024.09.001

• 碳捕集与利用 •    下一篇

燃烧后CO2捕集系统的复合无模型自适应控制

贾冰珂(), 李紫豪, 吴振龙*(), 刘艳红   

  1. 郑州大学 电气与信息工程学院,郑州 450001
  • 收稿日期:2024-04-01 修回日期:2024-07-31 出版日期:2024-09-25
  • 通讯作者: *吴振龙(1992),男,副教授,博士,从事二氧化碳封存、捕集控制,自抗扰控制及其工程应用等方面的研究,wuzhenlong2020@zzu.edu.cn
  • 作者简介:贾冰珂(1998),女,硕士生,从事燃烧后二氧化碳封存捕集系统的优化控制等方面的研究,beatrice317@163.com
  • 基金资助:
    国家自然科学基金项目(52106030);电力系统国家重点实验室开放课题(SKLD21KM14);郑州大学教授团队助力企业创新驱动发展专项(JSZLQY2022016)

Composite model-free adaptive control of a post-combustion CO2 capture system

JIA Bingke(), LI Zihao, WU Zhenlong*(), LIU Yanhong   

  1. School of Electrical and Information Engineering, Zhengzhou University, Zhengzhou 450001,China
  • Received:2024-04-01 Revised:2024-07-31 Published:2024-09-25
  • Supported by:
    National Natural Science Foundation of China(52106030);State Key Laboratory of Power Systems Project(SKLD21KM14);Zhengzhou University Professor Team for Enterprise Innovation-Driven Development Project(JSZLQY2022016)

摘要:

燃烧后CO2捕集(PCC)系统作为一种有效的碳减排技术,其优化控制对提高CO2捕集效率和降低能耗具有重要意义。针对PCC系统的控制问题,提出一种复合无模型自适应控制(MFAC)方法,旨在解决传统控制方法依赖精确模型、难以适应系统参数变化和不确定性的问题。该方法将扩张状态观测器引入MFAC中,利用扩张状态观测器估计系统总扰动,提高系统的跟踪和抗干扰能力。进行不同控制方案下的PCC系统对比仿真,其中,在跟踪CO2捕集率设定值的仿真中,复合MFAC展现出了良好的跟踪性能,上升时间95.69 s,比传统的MFAC快4.65 s,较比例-积分-微分(PID)控制快78.02 s。在抗扰性能的对比仿真中,复合MFAC在受到扰动时所产生的偏差最小,绝对误差积分和平方误差积分的数值均小于MFAC和PID控制器,具有良好的抗干扰能力。仿真验证了所提出控制方案的有效性和适用性。

关键词: 燃烧后CO2捕集, 扩张状态观测器, 无模型自适应控制, 控制性能

Abstract:

Post-combustion carbon capture (PCC) systems, as effective carbon reduction devices, are important for enhancing CO2 capture efficiency and reducing energy consumption. To address control issues of PCC systems, a novel composite model-free adaptive control (MFAC)method is proposed,aiming for overcoming the reliance on precise models and the difficulties in adapting to varying parameters and uncertainties encountered by traditional methods. Composite MFAC integrates an extended state observer to estimate total system disturbances, improving systems' tracking and disturbance rejection capabilities. Comparative simulations on different control methods of PCC systems were conducted. In simulations for tracking CO2 capture rate setpoints, composite MFAC demonstrated excellent tracking capability, whose acceleration time was only 95.69 s, which was 4.65 s faster than that of traditional MFAC and 78.02 s faster than that of PID control. In simulations for evaluating disturbance rejection performances, the composite MFAC exhibited the minimal deviation, smallest integral absolute error (IAE) and integral square error (ISE) among the three control methods, demonstrating a robust disturbance rejection capability. Simulation results validate the effectiveness and applicability of the proposed control approach.

Key words: post-combustion CO2 capture, extended state observer, model-free adaptive control, control performance

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