采用闭式油路的变频液压电梯能耗特性分析  

Characteristics analyses of energy consumption for VVVF controlled hydraulic elevators with closed circuit

作　　者：胡东明[1] 徐兵[1] 杨华勇[1] 林建杰[1] 

机构地区：[1]浙江大学流体传动及控制国家重点实验室,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2007年第3期475-479,共5页Journal of Zhejiang University：Engineering Science

基　　金：国家"十五"科技攻关专题资助项目(2002BA208B02)

摘　　要：为解决液压电梯装机功率和能耗大的问题,提出一种采用闭式油路的变频(VVVF)控制液压电梯系统.阐述了基于VVVF控制、蓄能器做液压配重和活塞拉缸技术的节能原理,分析了系统中蓄能器、主电动机和负载这3个主要功率部件的运行状况.在电梯轿厢处于不同负载重量的工况下,对系统中3个主要部件的功率特性进行了试验研究,并在此基础上计算得到系统的能耗和总效率.试验和分析结果表明,在电梯轿厢处于速度1.0 m/s、负载重量最大为1000 kg的工况下,该系统相对于典型的液压电梯系统,节能效果显著,装机功率仅为10.25 kW,总效率提高到70%.To solve the disadvantages of large installed power and high energy consumption in hydraulic elevators, the variable voltage variable frequency（VVVF） controlled hydraulic elevator system with closed circuit was proposed. The energy-saving principle was discussed using VVVF control, the accumulator for hydraulic counterweight and the piston-cylinder lifting technology. The working status the main power elements including the accumulator,the main electromotor and the load in the system were analyzed. Experimental power characteristics of three main power elements were obtained under different working load conditions of the elevator cabin, and then the energy consumption and the overall efficiency of the system were calculated. The results show that compared with typical hydraulic elevator systems, the installed power reduces to 10.25 kW and the overall efficiency of the system increases to 70% when the maximum speed of the elevator cabin is 1.0 m/s and the maximum load is 1 000 kg.

关 键 词：液压电梯 闭式油路 变频 能耗 节能 

分 类 号：TH137[机械工程—机械制造及自动化]