电液混合驱动大型电动挖掘机回转系统节能特性

doi:10.3901/JME.2025.22.306

机械工程学报 ›› 2025, Vol. 61 ›› Issue (22): 306-316.doi: 10.3901/JME.2025.22.306

• 交叉与前沿 • 上一篇

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电液混合驱动大型电动挖掘机回转系统节能特性

成杰¹, 王慧杰¹, 权龙¹, 黄家海^1,2, 黄伟男¹, 夏连鹏¹, 郝惠敏¹, 杨飞¹

1. 太原理工大学新型传感器及智能控制教育部实验室太原 030024;
2. 安徽理工大学机械工程学院淮南 232001

收稿日期:2024-11-18 修回日期:2025-05-27 发布日期:2026-01-10
作者简介:成杰,男,1989年出生,博士研究生。主要研究方向为电液伺服及比例控制技术。E-mail:tyustchengjie@gmail.com
黄家海,男,1979年出生,博士,教授,博士研究生导师。主要研究方向为流体传动与控制、机电装备节能技术。E-mail:huangjiahai@tyut.edu.cn
夏连鹏(通信作者),男,1990年出生,博士,助理研究员,硕士研究生导师。主要研究方向为工程机械液压系统节能控制。E-mail:xialianpeng@tyut.edu.cn
基金资助:
国家重点研发计划(2021YFB2011903); 国家自然科学基金(52105066,52105067)资助项目。

Energy-saving Characteristics of the Swing System in a Large Electric Excavator Driven by an Electro-hydraulic Hybrid System

CHENG Jie¹, WANG Huijie¹, QUAN Long¹, HUANG Jiahai^1,2, HUANG Weinan¹, XIA Lianpeng¹, HAO Huimin¹, YANG Fei¹

1. Key Laboratory of Advanced Transducers and Intelligent Control System of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024;
2. School of Mechanical Engineering, Anhui University of Science and Technology, Huainan 232001

Received:2024-11-18 Revised:2025-05-27 Published:2026-01-10

摘要/Abstract

摘要： 液压挖掘机每个作业工作循环均包含2次回转动作，频繁回转启停产生大量的溢流损失和节流损失，针对现有挖掘机回转系统节能技术无法解决消除节流损失和同时回收利用制动能的问题，提出一种由永磁同步电机作为主动力源，驱动上车回转系统回转，液压马达-蓄能器回收并利用制动动能的混合驱动回转系统，有效消除了原液压挖掘机经过多路阀的节流损失，同时回收并利用制动过程中制动动能。基于串联电机直接转矩控制，实现回转起动由电机和马达混合驱动加速，而制动过程由马达单独制动的控制策略。研究表明，与原液压挖掘机回转系统相比，电液混合驱动大型电动挖掘机回转系统动力源峰值功率可以降低24%～32%，系统能耗可以降低14.1%～50.5%。

关键词: 电动挖掘机, 回转系统, 电液混合驱动, 峰值功率, 系统能耗

Abstract: Each working cycle of hydraulic excavator includes two swing actions, and frequent swing acceleration and braking result in a lot of overflow loss and throttling loss. Aiming at the problem that the existing energy saving technology of excavator swing system can not solve the problem of eliminating throttling loss and recycling and utilizing braking energy at the same time, a hybrid driving swing system is proposed, which uses permanent magnet synchronous motor as the main power source to drive the swing system of the vehicle, and the hydraulic motor-accumulator recycle and utilize the braking kinetic energy. This system effectively eliminates the throttling loss of the original hydraulic excavator through the multi-way valve, and recycles and utilizes the braking kinetic energy in the braking process. Based on the direct torque control of series motor, the control strategy that the start of swing process is accelerated by the motor and the hydraulic motor, and the braking process is braked by the hydraulic motor alone is realized. The research shows that compared with the original hydraulic excavator swing system, the peak power of the power source of the large electric excavator swing system can be reduced by 24%-32%, and the system energy consumption can be reduced by 14.1%-50.5%.

Key words: electric excavator, swing system, electro-hydraulic hybrid drive, peak power, system energy consumption

中图分类号:

TH137

成杰, 王慧杰, 权龙, 黄家海, 黄伟男, 夏连鹏, 郝惠敏, 杨飞. 电液混合驱动大型电动挖掘机回转系统节能特性[J]. 机械工程学报, 2025, 61(22): 306-316.

CHENG Jie, WANG Huijie, QUAN Long, HUANG Jiahai, HUANG Weinan, XIA Lianpeng, HAO Huimin, YANG Fei. Energy-saving Characteristics of the Swing System in a Large Electric Excavator Driven by an Electro-hydraulic Hybrid System[J]. Journal of Mechanical Engineering, 2025, 61(22): 306-316.

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电液混合驱动大型电动挖掘机回转系统节能特性

Energy-saving Characteristics of the Swing System in a Large Electric Excavator Driven by an Electro-hydraulic Hybrid System

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