计及多堆燃料电池效率特性的氢储混合系统协调优化控制方法

针对传统多堆燃料电池的控制方法难以解决系统全功率范围高效运行与暂态电压稳定的问题，提出了一种计及多堆燃料电池效率特性的氢储混合系统协调优化控制方法，分为系统优化分配层与装备协调控制层。在系统优化分配层，提出了一种优化分配与轻载运行策略，以多堆燃料电池系统的效率最优为目标求解全功率映射集合，实现多堆燃料电池功率的优化分配，并避免燃料电池运行于轻载区间；在装备协调控制层，提出了一种燃料电池和电池组暂态功率快速平衡控制与稳态能量互补方法，实现两者之间暂、稳态的能量互补，抑制系统直流母线电压波动，提高系统的运行稳定性。基于Simulink平台进行算例分析，结果验证了所提协调优化控制方法的可行性与正确性。

Coordinated optimization control method of hybrid system with hydrogen and battery considering efficiency characteristics of multi-stack fuel cells

Aiming at the problem that the traditional control methods of multi-stack fuel cells are difficult to solve the system problems of efficient operation in the full power range and transient voltage stability, a coordinated optimization control method of hybrid system with hydrogen and battery considering the efficiency characteristics of multi-stack fuel cells is proposed, which is divided into system optimization distribution layer and equipment coordination control layer. In the system optimization distribution layer, a strategy of optimal distribution and light-load operation is proposed. The full power mapping set is solved with the goal of optimizing the efficiency of the multi-stack fuel cell system, so as to achieve the optimal power distribution of the multi-stack fuel cells and avoid the fuel cell operating in the light-load interval. In the equipment coordination control layer, a method of fast transient power balance control and steady-state energy complementarity between fuel cell and battery pack is proposed, which realizes the transient and steady-state energy complementarity, suppresses the DC bus voltage fluctuation and improves the system operation stability. An example based on Simulink platform is analyzed to verify the feasibility and correctness of the proposed coordinated optimization control method.