弱混车辆分层约束的能量协调控制策略

doi:10.3901/JME.2025.06.268

摘要/Abstract

摘要： 针对串联式弱混车辆在急加速过程动态特性较差的问题，提出分层约束的能量协调控制策略。建立动力系统动态模型，对车辆加速过程仿真分析得到动力系统的耦合约束条件，对增压系统仿真分析得到制约车辆动态特性的关键因素。进而提出分层约束的能量协调控制策略，底层根据冒烟极限油量下发动机理论最大负载转矩对发电机加载转矩进行约束，顶层根据系统的功率供给能力约束电机驱动功率。通过仿真验证所提策略的有效性。研究结果表明，相比于传统策略，分层约束的能量协调控制策略能有效协调发动机-发电机组的加载过程，大幅缩短了发动机-发电机组从怠速状态提升至标定功率的响应时间，显著提升了车辆的加速性能，为优化串联式弱混车辆的动态特性提供了新的技术路径。

关键词: 弱混车辆, 约束条件, 协调控制, 发动机-发电机组, 动态特性

Abstract: An energy coordination control strategy with layered constraints is proposed for the problem of poor dynamic characteristics of mild hybrid electric vehicles under transient conditions. The dynamic model of the power system is established, the coupling constraints of the power system are obtained by simulating the vehicle acceleration process, the key factor restricting the dynamic characteristics of the vehicle is obtained through the simulation analysis of the turbocharging system. Then, an energy coordination control strategy with Layered constraints is proposed. The bottom layer constrains the generator torque by the theoretical maximum load torque of the engine at the smoke limit oil, and the top layer constrains the motor power by the power supply capacity of the system. The effectiveness of the proposed strategy is verified by simulation. The results show that compared with the traditional strategy, the proposed strategy can effectively coordinate the loading process of the engine-generator set, greatly shorten the response time of the engine-generator set from idle speed to rated power, significantly improve the acceleration performance of the vehicle, and provide a new technical approach for optimizing the dynamic characteristics of series mild hybrid electric vehicles.

Key words: mild hybrid electric vehicle, constraint condition, coordinated control, engine-generator set, dynamic characteristics

中图分类号:

TJ810

吕航, 商显赫, 赵长禄, 韩雪峰, 杨占华, 张付军. 弱混车辆分层约束的能量协调控制策略[J]. 机械工程学报, 2025, 61(6): 268-276.

Lü Hang, SHANG Xianhe, ZHAO Changlu, HAN Xuefeng, YANG Zhanhua, ZHANG Fujun. Energy Coordination Control Strategy with Layered Constraints for Mild Hybrid Electric Vehicles[J]. Journal of Mechanical Engineering, 2025, 61(6): 268-276.

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链接本文: http://www.cjmenet.com.cn/CN/10.3901/JME.2025.06.268

http://www.cjmenet.com.cn/CN/Y2025/V61/I6/268

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