基于液压泵和电机能量转换效率提升的液压系统节能方法

发布时间：2018-01-25 20:58

本文关键词： 能耗液压系统功率匹配能量转换效率　出处：《合肥工业大学》2015年硕士论文　论文类型：学位论文

【摘要】：由于世界能源危机越来越引起人们的关注,随之而来的节能问题也相应成为人们关注的焦点。在我国,由于工业所占比重很大,以高碳能源为主的工业能耗占全社会能量消耗的70%左右,造成高能耗的同时也增加了碳的排放,对我国节能环保产生了严重的影响。在人们节能意识普遍提高的条件下,以高碳能耗为特点的制造业正面临节能的挑战,本文以液压成型装备为节能研究对象,对其能耗特点进行分析,并结合液压机工况对其能耗进行优化。本文首先从液压系统节能的角度对液压机工作过程中的能耗特点进行了分析,分析结果表明,在液压系统的实际能耗中,液压泵和电机的能量转换损失以及系统功率匹配不当造成的损失所占比例最大。本文在以解决液压系统功率匹配损耗为目的的变频节能理论基础上,对变频电机变量泵驱动方式的能耗进行理论优化分析。通过建立液压系统变频电机变量泵、变频电机定量泵以及工频电机变量泵三种驱动方式下的Simulink与AMESim联合仿真模型,并对以上三种驱动方式的能耗进行比较,结果表明,以上三种驱动方式都能实现功率匹配的目的,但不同驱动方式下的液压泵和电机的能量转换效率不同,其中变频电机变量泵驱动方式不仅满足了液压系统功率匹配的要求,同时也提升了液压泵和电机的能量转换效率。
[Abstract]:As the world energy crisis is getting more and more attention, the energy saving problem has become the focus of attention. In our country, because of the large proportion of industry. Industrial energy consumption, which is dominated by high carbon energy, accounts for about 70% of the total social energy consumption, which results in high energy consumption and also increases carbon emissions. Energy saving and environmental protection have a serious impact on our country. Under the condition that people's energy saving consciousness is raised generally, the manufacturing industry characterized by high carbon energy consumption is facing the challenge of energy saving. In this paper, hydraulic molding equipment is taken as the research object of energy saving. The characteristics of energy consumption are analyzed, and the energy consumption of hydraulic press is optimized. This paper first analyzes the characteristics of energy consumption in hydraulic press working process from the point of view of energy saving of hydraulic system. The analysis results show that in the actual energy consumption of hydraulic system. The energy conversion loss of hydraulic pump and motor and the loss caused by the improper power matching of the system account for the largest proportion. This paper is based on the theory of frequency conversion and energy saving aiming at solving the power matching loss of hydraulic system. The energy consumption of variable variable pump drive mode of variable frequency motor is optimized and analyzed theoretically. The variable variable pump of variable frequency motor of hydraulic system is established. The combined simulation model of Simulink and AMESim under three driving modes of variable variable pump and variable pump of frequency conversion motor is presented. The energy consumption of these three driving modes is compared and the results show that. The above three driving modes can achieve the purpose of power matching, but the energy conversion efficiency of hydraulic pump and motor under different driving modes is different. Variable-frequency motor variable pump drive not only meets the requirements of hydraulic system power matching, but also improves the efficiency of energy conversion between hydraulic pump and motor.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM343;TH137

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