六行混合动力采棉机能量管理策略仿真  

Simulation of the energy management strategy for six-row hybrid cotton pickers

作　　者：王建[1] 莫平凡 尹必峰[1] 黄幼林 朱亚辉 WANG Jian;MO Pingfan;YIN Bifeng;HUANG Youlin;ZHU Yahui(College of Automotive and Traffic Engineering,Jiangsu University,Zhenjiang 212013,China;Guangxi Yuchai Machinery Co.,Ltd.,Yulin 537000,China;Jiangsu Wode Agricultural Machinery Co.,Ltd.,Zhenjiang 212300,China)

机构地区：[1]江苏大学汽车与交通工程学院,镇江212013 [2]广西玉柴机器股份有限公司,玉林537000 [3]江苏沃得农业机械股份有限公司,镇江212013

出　　处：《农业工程学报》2024年第23期126-134,共9页Transactions of the Chinese Society of Agricultural Engineering

基　　金：江苏省科技厅现代农业重点及面上项目(BE2022326)。

摘　　要：为解决传统柴油机动力六行采棉机主要工作子系采用液压传动造成的系统效率低、能耗高等问题,该研究提出一种串联式混合动力系统构型。基于Matlab/Simulink搭建六行混合动力采棉机整车仿真平台,分别研究功率跟随策略、等效燃油消耗最小策略(equivalent consumption minimization strategy,ECMS)和转矩分配结合等效燃油消耗最小策略(torque distribution ECMS,TD-ECMS)3种能量管理策略对采棉机性能的影响。仿真结果表明,在道路运输和田间作业组合工况下,ECMS策略大幅降低了发动机功率的频繁波动,发动机转速稳定时间增加了40.94%;TD-ECMS策略能够实现对双电机综合效率最优控制,在需求功率较高时转矩分配与功率平分控制时基本保持一致,而在需求功率较低时转矩由前驱电机单独完成,位于低效率区工作点比例缩小,TD-ECMS策略相对于功率平分控制的双电机综合效率从93.92%提高到了94.83%;对整机油耗而言,相对于功率跟随策略,ECMS策略油耗降低了4.87%,TD-ECMS油耗降低了5.62%。研究结果可为六行采棉机混合动力系统开发和设计提供技术支撑和参考。Cotton is an important economic crop and strategic resource.The 14th Five-Year Plan for agricultural mechanization development emphasizes the need to vigorously promote agricultural mechanization and intelligentization.As a key agricultural equipment for achieving whole process mechanization of cotton harvesting,cotton pickers have attracted increasing attention.In China,the traditional walking transmission system of cotton pickers usually adopts the form of hydraulic infinite variable speed combined with mechanical stepped transmission.However,during operation,these pickers face significant variations in working conditions and fluctuating external loads,resulting in an overall high load.The hydraulic walking transmission system finds it struggles to continuously adjust speed and torque to match the constantly changing actual load,which leads to frequent fluctuations in the engine operating points,mismatch of torque in transmission components,and low efficiency of the transmission system.At the same time,due to the large overall load during the operation of the cotton picker,the engine runs for a long time in the high-speed and high-load area,and it is unable to maintain the high-efficiency area,resulting in the problem of high fuel consumption.To address the high fuel consumption associated with traditional cotton picker engines operating in inefficient areas,as well as the low efficiency of the hydraulic drive transmission system,replacing the original 410 kW engine with a 560KW engine allows it to operate in the high-efficiency area.Simultaneously,employing hybrid technology to replace hydraulic transmission with electric drive can significantly improve the performance and efficiency of the cotton picker,yielding better operational outcomes and economic benefits.In order to solve the problems of low system efficiency and high energy consumption caused by the hydraulic transmission of the main working subsystem of the traditional diesel engine power six-row cotton picker,a series hybrid power system configurati

关 键 词：采棉机 串联式混合动力 能量管理策略 转矩分配 仿真研究 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]