基于光伏的三端口制氢系统低纹波调制策略
Low-Ripple Modulation Strategy for a Photovoltaic-Based Triple-Port Hydrogen Production System
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中文总结 AI 辅助
针对光伏制氢系统中三有源桥变换器输出电流纹波影响电解效率的问题，提出基于内外移相角协调优化的低纹波调制策略，结合改进差分进化算法实现动态全局优化，有效抑制纹波。
中文摘要 AI 辅助
在各种制氢方法中，利用可再生能源电解水制氢在大规模绿色氢能生产中发挥着关键作用。三有源桥隔离型DC-DC变换系统因其高能量密度、宽降压比和高可靠性等优势，在制氢领域展现出显著的应用潜力。然而，制氢端口的输出电流纹波严重影响电解槽效率和产氢速率。现有研究对电流纹波的优化效果有限，且难以实现动态优化，导致在动态工况下纹波抑制受限。针对这一问题，本文提出一种基于内外移相角协调优化的多端口功率变换系统低纹波调制策略，用于可再生能源制氢。通过建立精确的数学模型，推导出最小电流纹波条件下的最优移相角组合。采用具有自适应参数策略的改进差分进化算法，实现动态条件下的全局优化。仿真和实验结果表明，所提策略能有效抑制电流纹波，为波动性可再生能源制氢提供了高效可靠的解决方案。
英文摘要
Among various production methods, hydrogen generation via electrolysis powered by renewable energy plays a key role in achieving large-scale green hydrogen production. The triple active bridge isolated DC-DC conversion system exhibits significant application potential in hydrogen production due to its advantages, such as high energy density, wide step-down ratio, and high reliability. However, the output current ripple at the hydrogen production port critically affects the efficiency of the electrolyzer and the hydrogen production rate. Existing studies have limited optimization effects on current ripple and struggle to achieve dynamic optimization, leading to constrained ripple suppression under dynamic operating conditions. To address this issue, this paper proposes a low-ripple modulation strategy based on coordinated optimization of inner and outer phase-shift angles for multi-port power conversion systems in renewable energy hydrogen production. By establishing an accurate mathematical model, the optimal phase-shift angle combination under minimal current ripple conditions is derived. An improved differential evolution algorithm with adaptive parameter strategy is employed to achieve global optimization under dynamic conditions. Simulation and experimental results demonstrate that the proposed strategy effectively suppresses current ripple, providing an efficient and reliable solution for hydrogen production from fluctuating renewable energy sources.
