纯电驱液压挖掘机动力源特性试验研究（英文）

发布时间：2018-05-08 17:39

本文选题：液压挖掘机 + 电液动力源　；参考：《机床与液压》2017年18期

【摘要】：现有工程机械主要以柴油发动机为原动机,存在燃油效率低,排放严重等问题,新的趋势是采用电动方式代替内燃方式。采用变速异步电动机驱动定量泵作为动力源,针对变频异步电动机动态响应较慢的问题,提出在定量泵出口增设液压蓄能器并将其油液引入液压泵入口的方法,提高电动机动态响应。建立采用蓄能器辅助起制动后电驱动力源的试验系统,对比分析了有无蓄能器辅助时液压泵的起制动特性。在此基础上,将这一动力源用于驱动进出口独立控制的液压挖掘机,对动臂运行特性和能耗特性进行试验研究。与发动机驱动系统相比,采用新型电驱动方式,实现同样的操纵性能,可降低动臂运行成本50%,并显著降低供电电源峰值电流。
[Abstract]:The existing construction machinery mainly takes diesel engine as the prime mover, which has the problems of low fuel efficiency and serious emission. The new trend is to replace the internal combustion mode with electric mode. The variable speed asynchronous motor drive quantitative pump is used as the power source. Aiming at the problem of slow dynamic response of frequency conversion asynchronous motor, the method of adding hydraulic accumulator to the outlet of quantitative pump and introducing its oil into the inlet of hydraulic pump is put forward. Improve the dynamic response of motor. In this paper, a test system of electric driving force source with or without accumulator auxiliary braking is established, and the braking characteristics of hydraulic pump with or without accumulator are compared and analyzed. On this basis, the power source is used to drive the independent control of the inlet and outlet hydraulic excavator, and the operating characteristics and energy consumption characteristics of the arm are studied experimentally. Compared with the engine drive system, the new electric drive mode can achieve the same operating performance, can reduce the operating cost of the arm 50 and significantly reduce the peak current of the power supply.
【作者单位】：太原理工大学新型传感器与智能控制教育部和山西省重点实验室;
【基金】：supported by the National Natural Science Foundation of China ( 51575374) NationalShanxi Coal based Low Carbon Foundation of China ( U1510206) Shanxi Coal based Key Scientific and Technological Project( MJ2014-11)
【分类号】：TH137.51

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