摘要
在质子交换膜(proton exchange membrane,PEM)电解水制氢中,制氢电源性能直接影响制氢效率和电解槽寿命。二次降压变换器具有高降压比、低纹波、高效率及低成本等优势,契合新能源制氢需求。为稳定制氢电压电流,抑制新能源波动与参数变化对系统的不利影响,提出了一种基于能量耗散理论的无源控制(passivity-based control,PBC)与非线性扰动观测器(nonlinear disturbance observer,NDO)融合的复合控制策略。通过NDO对新能源波动、电解槽时变参数及电源参数波动的多源扰动进行在线估计,并利用PBC储能快速收敛机制加以补偿,从而增强二次降压型PEM电解制氢电源控制的稳定性和鲁棒性。在MATLAB/Simulink仿真平台上开展制氢系统在启动、恒压和多阶恒流制氢各工况下的多源抗扰控制实验。实验结果表明,相比于传统滑模控制和无源控制,所提PBC+NDO策略在二次降压型PEM电解制氢电源中表现出更好的稳定性和抗扰性,验证了该控制策略的可行性和有效性。
In proton exchange membrane(PEM)water electrolysis for hydrogen production,the performance of the hydrogen production power supply directly affects the hydrogen production efficiency and the electrolyzer lifetime.The quadratic buck converter,with its advantages of high step-down ratio,low current ripple,high efficiency,and low cost,meets the requirements of renewable energy-based hydrogen production.To stabilize the hydrogen production voltage and current while suppressing the adverse effects of renewable energy fluctuations and parameter variations on the system,a composite control strategy integrating passivity-based control(PBC)and nonlinear disturbance observer(NDO)based on energy dissipation theory was proposed.The NDO was used to perform online estimation of the multi-source disturbances caused by renewable energy fluctuations,time-varying parameters of the electrolyzer,and power supply parameter variations.These disturbances were then compensated by the rapid convergence mechanism of PBC energy storage,thereby enhancing the stability and robustness of the quadratic buck PEM electrolytic hydrogen production power supply control.Experiments on multisource disturbance control under various operating conditions,including startup,constant voltage,and multi-stage constant current of the hydrogen production system,were conducted on the MATLAB/Simulink simulation platform.Experimental results show that,compared with traditional sliding mode control and passivity-based control,the proposed PBC+NDO strategy exhibits better stability and disturbance rejection in the quadratic buck PEM electrolysis hydrogen production power supply,validating the feasibility and effectiveness of the control strategy.
作者
韩潇
李萍
赵波
赵峰
韩腾
HAN Xiao;LI Ping;ZHAO Bo;ZHAO Feng;HAN Teng(College of Automation,Beijing Information Science&Technology University,Beijing 100192,China;Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100190,China;Beijing Dingyao Technology Co.,Ltd,Beijing 102200,China)
出处
《北京信息科技大学学报(自然科学版)》
2025年第4期22-31,共10页
Journal of Beijing Information Science and Technology University(Science and Technology Edition)
关键词
新能源制氢
质子交换膜电解槽
二次降压变换器
无源控制
非线性扰动观测器
renewable energy hydrogen production
proton exchange membrane(PEM)electrolyzer
quadratic buck converter
passivity-based control(PBC)
nonlinear disturbance observer(NDO)
