电-液混合驱动曳引电梯特性及能效分析

电梯作为高层建筑运输人及货物的设备,自发明至今一直为人们的出行提供便捷;但诸多研究表明电梯能耗占高层建筑总能耗的20%左右,尤其是在能源供需矛盾日益突出的今天,电梯能耗已成为制约其发展和应用的主要问题。为降低电梯能耗,达到电梯节能运行的目的,结合曳引电梯的结构特点、运行特性及能耗特性,提出并设计一种新型的电-液混合驱动高能效曳引电梯节能系统。对传统电梯的运行特性进行分析,进而对提出的新型节能原理进行分析。建立曳引电梯能耗的仿真模型,并对传统电梯和节能电梯运行过程中的能耗进行仿真分析,仿真结果表明新型节能系统的节能效果明显。搭建电梯节能综合试验平台,通过在高层建筑进行能耗试验,验证仿真模型的准确性,试验结果表明新型节能系统的节能效率约为10%~14%。本文的研究成果不但是曳引电梯节能方面的发展方向之一,而且在其他垂直提升机械中也具有较好的应用前景。

Research of Operating Characteristics and Energy Efficiency of Traction Elevator with Hybrid Electric-hydraulic Drive

Elevators are increasingly irreplaceable in the modernization of society, and since their invention, they have undergone several generations of replacement and technology upgrades, while providing convenience for people to move. Numerous studies show that the energy consumed by elevators accounts for about 20% of the total energy consumption of high-rise buildings. Especially in the energy supply and demand contradictions becoming increasingly prominent today, the energy consumption has become the main problem which restricts the elevators development and application. In order to reduce the elevator energy consumption and achieve the energy saving operational purpose, this study proposed and designed a new type of high-efficiency hybrid electric-hydraulic drive energy-saving traction elevator system based on the structural, operating, and energy-consumption characteristics of traction elevators. In research, the operating characteristic of the traditional elevator is analyzed and the proposed new energy saving system is analyzed. The simulation model of traction elevator is established, the energy consumption of traditional elevator and energy saving elevator in operational process is simulated and analyzed, and the simulation results show that the energy saving effects of the energy saving system is obvious. The experiment platform is established and the accuracy of simulation model is validated through the energy consumption test in the high-rise buildings. The experiment results show that the energy efficiency of the new energy saving system is about 10%-14%. The research achievement of the paper not only is one development direction of the energy saving elevator, but also has good application prospect in other vertical lifting mechanical devices.