混合动力挖掘机回转制动能量回收系统建模与试验研究  

Modeling and experimental research on rotary braking energy recovery system of hybrid excavator

作　　者：刘昌盛[1] 何清华[1,2] 龚俊[1] 赵喻明[1] 李赛白 

机构地区：[1]中南大学高性能复杂制造国家重点实验室,湖南长沙410083 [2]山河智能装备股份有限公司技术中心,湖南长沙410100

出　　处：《中南大学学报（自然科学版）》2016年第5期1533-1542,共10页Journal of Central South University:Science and Technology

基　　金：国家科技支撑计划项目(2014BAA04B01);国家高技术研究发展计划(863计划)项目(2010AA044401);湖南省科技计划重点项目(2010GK2007)~~

摘　　要：为了回收液压挖掘机回转阶段的制动能量,对挖掘机典型作业工况及能耗进行分析,设计一种以液压马达+电机为回收方式、超级电容为储能元件的回转制动能量回收方案。构建回转制动能量回收系统中发动机、电机、回收马达、超级电容等关键元件数学模型,在对回转运动状态确认与能量回收模式切换、回收电机力矩输出控制和超级电容SOC判断的基础上,建立能量回收系统的仿真模型,以挖掘机实际载荷谱为输入对系统能量回收效果进行仿真分析。搭建挖掘机回转制动能量回收系统试验平台,对该试验系统的能量回收效果和回转驱动性能进行试验研究。研究结果表明:该能量回收方案可行,在不影响挖掘机回转驱动性能的同时,平台回转制动能量回收效率可达到40%以上。In order to recover the braking energy from the hydraulic excavator during rotary phase, the typical working condition and energy losses were analyzed, and a rotary braking energy recovery program for hybrid excavator was proposed based on hydraulic motor and electric motor as recovery method and capacitor as energy storage element. The mathematical model of key components such as engine, electric motor, hydraulic motor and capacitor was established. For the rotary braking energy recovery system, the simulation model was established based on rotary motion state recognition and energy recovery mode switching, electric motor torque output control and capacitor SOC judgment, and the effect of energy recovery system was analyzed by simulation based on the actual load spectrum of hydraulic excavator as input signal. At last the recovery effect and rotary drive performance was studied by building test platform of rotary braking energy recovery system. The results show that not only the recovery program is feasible, but the rotary braking energy recovery efficiency can reach above 40% without affecting rotary driving performance of the excavator.

关 键 词：混合动力挖掘机 回转制动 能量回收 仿真分析 试验平台 

分 类 号：TH39[机械工程—机械制造及自动化]