新型城轨电车混合动力系统能量管理策略  

Energy Management Strategy for New Type Urban Rail Vehicle Hybrid Power System

作　　者：高锋阳[1,2] 张国恒 石岩 强国栋 GAO Fengyang;ZHANG Guoheng;SHI Yan;QIANG Guodong(School of Automation and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;Rail Transit Electrical Automation Engineering Laboratory of Gansu Province, Lanzhou 730070,China)

机构地区：[1]兰州交通大学自动化与电气工程学院,甘肃兰州730070 [2]甘肃省轨道交通电气自动化工程实验室,甘肃兰州730070

出　　处：《铁道学报》2019年第4期48-54,共7页Journal of the China Railway Society

基　　金：国家重点研究发展计划(2017YFB1201003-020);国家自然科学基金(51767013)

摘　　要：采用燃料电池、蓄电池和超级电容混合动力的无接触网城轨列车供电方式,已经逐渐发展成为有轨电车动力系统的一种理想方案。针对车载混合动力系统能量管理问题,在状态机控制策略的基础上引入功率解耦控制,由燃料电池满足低频负载功率,由辅助供电单元满足高频负载功率,通过状态机再次进行能量分配与管理。通过仿真实验,与未加功率解耦控制的状态机控制进行对比分析。仿真实验表明:控制策略可有效降低燃料电池的运行压力,并且能够充分利用辅助供电单元,减小锂电池在低荷电状态时高负载需求功率情况下的运行压力,提高了动力系统对于多变性负载和高功率负载供电的可靠性。The fuel-cell hybrid power system of catenary free tramcar consisting of fuel cells, batteries and supercapacitors has gradually developed into an ideal solution for the tramcar power system. Aiming at the energy management problem of vehicle-mounted hybrid power system, the power decoupling control based on the state machine control strategy was introduced. The fuel cell as well as the auxiliary power supply unit were used to meet the low and high frequency load power respectively. The energy was distributed and managed again through the state machine. The proposed control strategy was compared with the state machine control without power decoupling control by simulation experiments. The results show that the proposed control strategy can effectively reduce the operating pressure of the fuel cell, and fully utilize the auxiliary power to reduce the operating pressure of the lithium battery under the condition of high load demand power and the low state of charge, which can improve the power supply reliability of the power system under the condition of variable loads and high power loads.

关 键 词：无接触网城轨列车 燃料电池 能量管理 功率分配 状态机 

分 类 号：TM92[电气工程—电力电子与电力传动]