| 基于静液压传动的蓄电池轨道车电液混合加速策略 |
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| 引用本文： | 刘桓龙,冯磊,李志伟.基于静液压传动的蓄电池轨道车电液混合加速策略[J].液压与气动,2019,0(12):85-94. |
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| 作者姓名： | 刘桓龙 冯磊 李志伟 |
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| 作者单位： | 1.西南交通大学先进驱动节能技术教育部工程研究中心， 四川成都610031；
2.四川省机械研究设计院， 四川成都610023 |
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| 基金项目： | 四川省科技厅重点研发项目（2018GZ0450） |
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| 摘 要： | 为了解决蓄电池轨道车瞬时加速大扭矩引起的大电流冲击对蓄电池寿命和整车续航里程的不利影响，基于传统的静液压传动系统设计了一套新型的电液混合动力系统。首先，建立了电液混合动力系统的功率流数学模型，并根据轨道车的行驶特点对电液混合动力系统的工作模式进行划分；其次，基于加速工况仿真了不同电液功率分配比下的动力耦合特性，并指出研究轨道车能量管理策略的必要性；最后，理论分析了电液混合动力系统中影响蓄电池放电电流强度的因素，并据此制定了最小放电电流冲击的加速策略。运用AMESim-Simulink联合仿真平台对加速策略的可行性进行分析，仿真结果表明所设计的控制策略对轨道车加速时蓄电池的放电电流冲击有良好的抑制作用，且控制简单，实用性强。
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| 关 键 词： | 蓄电池轨道车 静液压传动 电液混合动力 功率流 最小放电电流冲击 |
| 收稿时间： | 2019-02-17 |
Electric Hydraulic Hybrid Acceleration Strategy Based on Hydrostatic Transmission for Battery Rail Engineering Vehicle |
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| LIU Huan-long,FENG Lei,LI Zhi-wei.Electric Hydraulic Hybrid Acceleration Strategy Based on Hydrostatic Transmission for Battery Rail Engineering Vehicle[J].Chinese Hydraulics & Pneumatics,2019,0(12):85-94. |
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| Authors: | LIU Huan-long FENG Lei LI Zhi-wei |
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| Affiliation: | 1. Engineering Research Center of Advanced Driving Energy Saving Technology, Ministry of Education,
Southwest Jiaotong University, Chengdu, Sichuan610031;
2. Sichuan Provincial Machinery Research & Design Institute, Chengdu, Sichuan610023 |
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| Abstract: | To solve the adverse influence of high current impulse caused by instantaneous acceleration large torque of battery rail vehicle on battery life and vehicle endurance mileage, a novel electric hydraulic hybrid powertrain is designed based on the traditional hydrostatic transmission system. Firstly, the power flow mathematical model of electric hydraulic hybrid powertrain is established, and the operating modes are divided according to the driving conditions. Secondly, based on the acceleration conditions, the dynamic coupling performances of different electric hydraulic power distribution ratios are simulated, and the necessity of investigating the energy management strategy of battery rail vehicle is pointed out. Finally, the factors affecting the battery discharge current intensity in electric hydraulic hybrid powertrain are analyzed theoretically, and the acceleration strategy of the minimum discharge current impulse is formulated accordingly. The feasibility of control strategy is analyzed through the AMEsim-Simulink co-simulation platform. The simulation results show that the proposed control strategy has a good suppression on the battery discharge current impulse when the battery rail vehicle accelerates, and the control is simple and practical. |
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