混合动力列车建模及能量管理策略研究

Modeling and Energy Management Strategy of Hybrid Train

研究"电网+蓄电池"模式的混合动力动列车组,为保证蓄电池SOC节能状态,并降低传动系统前端电流,针对混合动力动车组功率分配问题进行研究,在建立混合动力动车组仿真模型基础上,通过分析混合动力系统功率传递关系,结合列车运行需求功率的区间分布特点,提出模糊控制的功率分配策略。对实际线路进行仿真,仿真结果表明算法能有效分配车载蓄电池和电网的功率,保证车载蓄电池的荷电状态处于较高水平,同时降低了网侧电流,结果表明对混合动力动车组的安全运行具有一定的积极作用。

A new type of hybrid power train based on the ＂Power ＋ Battery＂ was studied. To ensure the battery SOC state and reduce transmission front-end current, we researched the power allocation of hybrid train. Based on structure of hybrid power train, the simulation model of hybrid power train was build. A Power Allocation Strategy based on Fuzzy control was proposed by analyzing the power relationship of hybrid system and required power of train. Through simulating the actual line, the allocation algorithm can effectively allocate storage battery and grid power, keep the battery power at a high level, and reduce the maximum instantaneous current of the power grid. The simula- tion results show that this strategy has a positive effect.