不同液压能耦合模式下蓄电池轨道工程车的加速功率特性

摘要/Abstract

摘要： 为降低轨道工程车辆加速时的电功率，以电静液压串联混合动力系统为研究对象，提出基于泵进出口压差调节的泵入口流量耦合加速方式。分析了泵入口流量耦合、泵出口流量耦合、并联马达扭矩耦合三种加速方式下系统液压参数和动力学参数对电功率的影响关系，探讨了不同液压能耦合模式下轨道工程车加速时的节能特性。AMESim与MATLAB/Simulink联合仿真和实验结果表明：在并联马达扭矩耦合与泵入口流量耦合模式下加速时降低电功率和节能效果明显，但前者存在较大的系统冲击，对车辆底架空间要求更严苛，成本更高，而泵入口流量耦合模式则兼具较好的节能性、稳定性及经济性，具有更好的综合性能。

关键词: 混合动力, 电静液压串联混合, 液压能耦合, 泵入口流量耦合

Abstract: In order to reduce the electric power of the rail engineering vehicles during acceleration, the electro-hydrostatic series hybrid power system was taken as the research object, and the flow coupling at the inlet pump of acceleration method was proposed based on the pump inlet and outlet pressure difference adjustment.The influences of system hydraulic and dynamic parameters on electric power under three acceleration modes, the flow coupling at the inlet pump, the flow coupling at the outlet pump, torque coupling with parallel motor, were analyzed deeply.The energy conservation characteristics of rail engineering vehicles under different hydraulic energy coupling modes were discussed.Co-simulation between AMESim and MATLAB/Simulink and experimental research shows that torque coupling with parallel motor and flow coupling at the inlet pump acceleration methods have obvious electric power reduction and energy saving effects, but the former has larger system impacts, more stringent requirements on vehicle chassis space and higher cost while the flow coupling at the inlet pump has better energy saving, stability and economy with better overall performance.

Key words: hybrid power, electro-hydrostatic hydraulic series hybrid, hydraulic energy coupling, flow coupling at the inlet pump

中图分类号:

U267.1

李顺;刘桓龙;陈冠鹏. 不同液压能耦合模式下蓄电池轨道工程车的加速功率特性[J]. 中国机械工程.

LI Shun;LIU Huanlong;CHEN Guanpeng. Acceleration Power Characteristics of Battery Track Engineering Vehicles under Different Hydraulic Energy Coupling Modes[J]. China Mechanical Engineering.

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