功率分流式混合动力系统结构优化与性能验证

Architecture Optimization and Performance Validation for Power-split Hybrid System

摘要:

对某具有双行星排的功率分流式混合动力系统进行了结构优化，并对优化后的系统进行运动学、动力学和效率分析，随后介绍了系统的工作模式及特点.基于Matlab/Simulink与LMS AMESim软件建立联合仿真平台，进行整车性能仿真.结果表明，整车能量消耗和动力性能均得到改善.纯电动模式下，城市工况（UDC）整车电能消耗降低8%;混动模式下，新欧洲行驶工况（NEDC）整车油耗降低6%.纯电动模式最高车速从110 km?h-1增加到160 km?h-1.混动模式0~100 km?h-1加速时间从14.5 s减少到10.0 s.

关键词:混合动力汽车; 功率分流; 结构优化; 联合仿真

Abstract:

An architecture optimization method was proposed for a compound power-split hybrid system. Kinematic, dynamic, and efficiency analyses were conducted for the optimized system. Then its various operation modes were introduced. A cosimulation platform was developed using Matlab/Simulink and LMS AMESim. Simulation results show that, fuel economy and power performance of the system are both improved. Energy consumption of an urban driving cycle(UDC) in pure electric modes decreases by 8%. Fuel consumption of new European driving cycle (NEDC) in hybrid modes decreases by 6%. Maximum vehicle speed in pure electric modes increases from 110 km?h-1 to 160 km?h-1. Acceleration time of 0~100 km?h-1 in hybrid modes is shortened from 14.5 s to 10.0 s.

Key words:hybrid electric vehicle; power-split; architecture optimization; co-simulation