Net Power Enhancement of PEMFC System Based on Dual Loop Multivariable Coordinated Management
Net Power Enhancement of PEMFC System Based on Dual Loop Multivariable Coordinated Management
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DOI：
10.1109/tie.2023.3234144
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发表时间：
2023
影响因子：
7.7
通讯作者：
Liangzhen Yin;Qi Li;E. Breaz;Wei-rong Chen;Fei Gao
中科院分区：
文献类型：
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作者：
Liangzhen Yin;Qi Li;E. Breaz;Wei-rong Chen;Fei Gao
针对质子交换膜燃料电池（PEMFC）系统中电堆温度和氧过剩率等运行参数之间存在的非线性和强耦合问题，提出了一种双回路多变量协调管理（DLMCM）方法，以实现PEMFC系统的净功率提升。提出的优化方法包括：1）外部网络功率优化回路和2）内部数据驱动多变量控制回路。在求解外网功率优化问题时，提出了基于实验数据的净功率光滑曲面模型和安全约束，用于最大净功率调节器的设计。对于数据驱动的多变量控制内环，首先提出了一种基于伪偏导数线性化的多输入多输出系统在线建模与估计方法。然后，基于PPDL的离散自适应积分终端滑模控制，实现最大净功率轨迹跟踪。在5 kW PEMFC系统上进行的实验测试表明，与滑模控制相比，该DLMCM具有更好的跟踪能力和内扰抑制能力。此外，与手动引导控制，温度控制，和空气流量控制的比较研究证明了建议DLMCM的有效性，净功率增强与寄生功耗比的低水平。
A dual loop multivariable coordinated management (DLMCM) is proposed in this article dealing with the existed nonlinearity and strong coupling between operating parameters such as stack temperature and oxygen excess ratio, to achieve net power enhancement of proton exchange membrane fuel cell (PEMFC) system. The proposed optimization method includes: 1) outer net power optimization loop and 2) inner data-driven multivariable control loop. In solving the outer net power optimization, the experimental data based net power smooth surface model and the security constraints are proposed for maximum net power regulator design. Regarding inner data-driven multivariable control loop, first, pseudopartial derivative linearization (PPDL) is proposed for online modeling and estimation of the multi-input and multi-output system. Then, PPDL-based discrete adaptive integral terminal sliding mode control is proposed to achieve maximum net power trajectory tracking. Experimental tests carried out on 5-kW PEMFC system show that the proposed DLMCM has better tracking ability, and internal disturbance rejection compared with sliding mode control. Moreover, the comparative study with manual guided control, temperature control, and air flow control testifies the effectiveness of proposed DLMCM for net power enhancement with a low level of parasitic power consumption ratio.