混合动力挖掘机动力匹配研究及仿真  

Research and Simulation of Power Matching for Hybrid Excavator

作　　者：王伟奇[1] 严文超[1] 王源 WANG Weiqi;YAN Wenchao;WANG Yuan(Hubei Three Gorges Polytechnic,Yichang 443000,Hubei,China;Guizhou Jonyang Kinetics Co.Ltd.,Guiyang,550006,Guizhou,China)

机构地区：[1]湖北三峡职业技术学院,湖北宜昌443000 [2]贵州詹阳动力重工有限公司,贵州贵阳550006

出　　处：《汕头大学学报（自然科学版）》2020年第4期46-53,共8页Journal of Shantou University：Natural Science Edition

基　　金：宜昌市应用基础研究项目(A19-302-20);湖北三峡职业技术学院科研项目(2019ZDX04)。

摘　　要：以公司L621H混合动力挖掘机为研究对象,分析了发动机及混联式动力传动系统的工作特性.运用模糊控制理论确定动力系统控制策略,以需求转矩和荷电状态为输入条件进行动力匹配,确定动力系统的工作状态,计算出发动机和电机的输出转速和转矩.对混合动力挖掘机动力匹配控制系统进行建模及仿真.仿真结果表明,动力系统中发动机进行主要动力输出,电机进行削峰填谷,保证发动机工作在经济节油区的条件下,解决了发动机工作点不稳定的问题,完成了动力系统输出功率与需求功率的实时高效匹配.Taking the company’s L621H hybrid power excavator as research object,the operating characteristics of its engine and hybrid power system are analyzed.Based on fuzzy control theory,control strategies of the power system are determined.Then power matching is conducted with the demand torque and the state of charge as the input conditions to determine the operating state of the power system and calculate the output speeds and torques of the engine and electric motor.Next,a system modeling of the hybrid power excavator is established to simulate the power matching control system.Simulation results show that in the power system,the engine is mainly responsible for power output,while the electric motor takes charge of peak-load shifting,which solves the problem of unstable operating point of the engine and guarantee the real-time efficient matching between power output and power demand of the power system on the premise that the engine operates in economical fuel-saving area.

关 键 词：挖掘机 混合动力 动力匹配 仿真 

分 类 号：TD67[矿业工程—矿山机电]