摘要
基于某7 L甲醇增程器,提出双闭环控制系统,分别构建基于发动机扭矩-发电机转速的发动机主导扭矩控制(TC)模式和基于发动机转速-发电机扭矩的发动机主导转速控制(SC)模式两种协同控制架构。通过自主研发的增程器台架实验平台,从稳态转速特性、瞬态转速响应、稳态功率输出特性以及外特性曲线四个维度,系统对比了不同控制模式对增程器综合性能的性能影响。实验结果表明,在稳态控制精度方面,TC模式表现出更优的控制精度,其转速波动率较SC模式最大降低46.7%。在瞬态加载工况下,TC模式转速偏移量较SC模式降幅达21%~71%,且调节时间缩短60%以上。而SC模式在持续功率输出时表现出更优稳定性,其功率波动率较TC模式最高降低86.1%。此外,外特性曲线对比显示SC模式在各转速点的最大功率输出显著低于TC模式,全转速段功率输出差距均超过30%。
This study proposes a dual closed-loop control system based on a 7 L methanol range extender,establishing two operational modes:torque control(TC)mode with engine torquegenerator speed regulation,and speed control(SC)mode with engine speed-generator torque regulation.Through a self-developed range extender test bench platform,the research systematically investigates the performance impacts of different control modes on the range extender's comprehensive characteristics from four dimensions:steady-state speed characteristics,transient speed response,steady-state power output characteristics,and external characteristic curves.The experimental results show that in terms of steady-state control accuracy,the TC mode exhibits superior control precision,with its speed fluctuation rate reduced by up to 46.7%compared to the SC mode.Under transient load conditions,the speed deviation of the TC mode is reduced by 21%to 71%compared to the SC mode,and the adjustment time is shortened by more than 60%.On the other hand,the SC mode demonstrates better stability during continuous power output,with its power fluctuation rate reduced by up to 86.1%compared to the TC mode.Additionally,the comparison of external characteristic curves shows that the maximum power output of the SC mode at various speed points is significantly lower than that of the TC mode,with the power output difference exceeding 30%across the entire speed range.
作者
任亚峰
罗渝生
潘艺鸽
REN Yafeng;LUO Yusheng;PAN Yige(School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan 030034,China;Shanxi Engineering Research Center of Internal Combustion Engine Power Technology,Taiyuan 030034,China;Advanced Technology Innovation Center of Zero Carbon Power Special Vehicle,Taiyuan 030034,China)
出处
《汽车实用技术》
2025年第18期36-41,共6页
Automobile Applied Technology
关键词
甲醇增程器
增程器总成台架
双闭环控制系统
测试实验
methanol range extender
range extender assembly test bench
dual closed-loop control system
experimental testing
