氢燃料混合动力调车机车动力系统及能量管理策略

Power system and energy management strategy for hydrogen fuel hybrid power shunting locomotive

针对燃料电池动态响应慢,输出特性软,无法回收制动能量的问题,文章以站场调运的机车为研究对象,研究设计以氢燃料电池为主、锂电池为辅的混合动力源系统,以混合驱动为基线,首先根据机车参数、实际工况需求展开牵引计算;结合氢燃料电池和动力电池输出特性,设计动力源系统拓扑;然后提出了基于不同工况需求、不同动力电池荷电态的能量管理策略,协同调度2种动力源的输出模式及特性;根据工况需求计算、系统拓扑,设计配置了动力源系统方案;最后通过现场不同工况实践应用,证明了本文设计的混合动力源系统可以较好满足机车牵引需求,设计的能量管理策略可以实现效率提升,验证了理论分析的正确性。

The paper investigated and designed a hybrid power source system,with hydrogen fuel cells as the primary source and lithium batteries as the auxiliary power source,for locomotives used in station operations,addressing issues of slow dynamic response,soft output characteristics,and inability to recover braking energy associated with fuel cell technology.Using hybrid driving as the baseline,traction calculations were first carried out based on locomotive parameters and actual operating conditions,and a power source system topology was designed by considering the output characteristics of both the hydrogen fuel cells and power batteries.Then,energy management strategies based on different operating conditions and various states of charge for power batteries were proposed to jointly schedule the output modes and characteristics of the two power sources.A power source system configuration was designed and implemented by calculating the operating conditions and system topology.Finally,through practical applications in various on-site working conditions,it is proved that the hybrid power source system designed in this paper can effectively meet the traction requirements of locomotives,and the designed energy management strategy can achieve efficiency improvement,verifying the correctness of the theoretical analysis.