高能效电液复合驱动回转系统参数匹配优化

doi:10.3901/JME.260547

机械工程学报 ›› 2026, Vol. 62 ›› Issue (14): 391-401,414.doi: 10.3901/JME.260547

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高能效电液复合驱动回转系统参数匹配优化

付胜杰^1,2, 吴狄坚^1,2, 任好玲^1,2, 陈其怀^1,2, 林添良^1,2, 姚兆源^1,2, 胡添^1,2, 郑伟杰^1,2

1. 华侨大学机电及自动化学院厦门 361021;
2. 福建省移动机械绿色智能驱动与传动重点实验室厦门 361021

收稿日期:2025-11-27 修回日期:2026-02-13 发布日期:2026-08-29
作者简介:付胜杰，男，1980年出生，博士，副教授，博士研究生导师。主要研究方向为高能效电液传动、电机控制。E-mail：xmshengjie@163.com;吴狄坚，男，2000年出生，硕士研究生。主要研究方向为电液复合驱动及控制。E-mail：23014080092@stu.hqu.edu.cn;林添良(通信作者)，男，1983年出生，博士，教授，博士研究生导师。主要研究方向为高能效电液传动及控制。E-mail：ltlkxl@163.com
基金资助:
国家重点研发计划(2023YFB3406601)、国家自然科学基金(52375054&52275055&52175051)、福建省自然科学基金杰青(2024J010029)、厦门市重大科技计划(3502Z20231013)和泉州市揭榜挂帅(2024QZGZ6)资助项目。

Parameter Matching Optimization of Electro-hydraulic Compound Drive Swing System for High Efficiency

FU Shengjie^1,2, WU Dijian^1,2, REN Haoling^1,2, CHEN Qihuai^1,2, LIN Tianliang^1,2, YAO Zhaoyuan^1,2, HU Tian^1,2, ZHENG Weijie^1,2

1. College of Mechanical Engineering and Automation, Huaqiao University, Xiamen 361021;
2. Fujian Key Laboratory of Green Intelligent Drive and Transmission for Mobile Machinery, Xiamen 361021

Received:2025-11-27 Revised:2026-02-13 Published:2026-08-29

摘要/Abstract

摘要： 传统挖掘机回转系统由液压驱动，存在能耗高、控制性能有限等问题。纯电驱动具有高能效的优势，但易造成整车冲击大，且难以应对侧壁掘削下堵转大扭矩驱动等特殊工况需求。对挖掘机液压回转驱动系统主要能耗形式进行分析，在此基础上，综合电驱高能效、良好操控性和液驱高功率密度、强保压等优势，提出电液复合驱动回转系统，利用永磁同步电机与四象限泵组合驱动回转系统，并通过蓄能器与动力电池实现回转制动动能的能量回收。为充分发挥电液复合系统的优势，以系统节能性作为系统性能评价指标，以某8吨挖掘机为例，对关键元件参数进行优化。传统参数匹配优化多只考虑单一变量，采用离线方式进行设计，难以应对复杂且动态多目标优化问题。采用动态规划算法对电液驱动系统进行能效寻优，在每个子阶段以系统经济性为目标，采用遗传算法对电液系统主要元件参数进行匹配优化。并开展试验验证所设计参数的合理性。结果表明，所提出系统能量回收率提高2%，与电驱回转系统和传统液压系统比较，电液复合驱动节能率分别提升54.5%、72.5%。

关键词: 电动挖掘机, 电液复合, 回转系统, 参数匹配, 节能性

Abstract: The traditional excavator swing system, driven by hydraulics, suffers from high energy consumption and limited control performance. Although electrification is a widely adopted solution, a pure electric drive configuration tends to cause significant vehicle impact and performs poorly under high-torque stall conditions such as sidewall excavation. In this study, the working principle, typical operating conditions, and main energy consumption patterns of the excavator swing drive system are analyzed. Based on this analysis, an electro-hydraulic composite drive swing system is proposed, which integrates the high energy efficiency and good maneuverability of electric drives with the high power density and strong holding capability of hydraulic drives. The swing system is driven by a combination of a permanent magnet synchronous motor and a four-quadrant pump, and the kinetic energy generated during rotational braking is recovered through an accumulator and a power battery. To fully exploit the advantages of the electro-hydraulic composite system, energy efficiency is adopted as the performance evaluation metric. Taking an 8-ton electric hydraulic excavator as an example, the parameters of the key components are optimized. Traditional parameter matching often considers single-variable problems and is conducted offline, making it difficult to address complex and dynamic multi-objective optimization. Therefore, a dynamic programming algorithm is employed for energy efficiency optimization of the electro-hydraulic drive system, and a genetic algorithm is used for matching and optimizing the parameters of the main components at each sub-stage, with system economy as the objective. Experiments are carried out to validate the rationality of the designed parameters. The results show that the proposed system achieves a 2% improvement in energy recovery rate. Compared with the electric drive swing system and the traditional hydraulic swing system, the energy-saving rate of the electro-hydraulic composite drive system is improved by 54.5% and 72.5%, respectively.

Key words: electric excavator, electro-hydraulic compound, swing system, parameter matching, energy efficiency

中图分类号:

TG156

付胜杰, 吴狄坚, 任好玲, 陈其怀, 林添良, 姚兆源, 胡添, 郑伟杰. 高能效电液复合驱动回转系统参数匹配优化[J]. 机械工程学报, 2026, 62(14): 391-401,414.

FU Shengjie, WU Dijian, REN Haoling, CHEN Qihuai, LIN Tianliang, YAO Zhaoyuan, HU Tian, ZHENG Weijie. Parameter Matching Optimization of Electro-hydraulic Compound Drive Swing System for High Efficiency[J]. Journal of Mechanical Engineering, 2026, 62(14): 391-401,414.

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http://www.cjmenet.com.cn/CN/Y2026/V62/I14/391

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高能效电液复合驱动回转系统参数匹配优化

Parameter Matching Optimization of Electro-hydraulic Compound Drive Swing System for High Efficiency

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