采用双定子泵的多级恒功率调速系统回路特性分析与试验

发布时间：2018-05-28 22:38

本文选题：农业机械 + 泵　；参考：《农业工程学报》2016年22期

【摘要】：传统恒功率调速系统的调节原理(转速与转矩的乘积必为定值)决定其无法满足转矩不变、输出不同转速的工况要求。为解决上述问题,采用双定子泵对其进行改进,对组成的多级恒功率调速系统性能与传统系统进行了对比分析,并搭建试验台进行了试验论证。结果表明,采用双定子泵组成的多级恒功率调速系统既具有传统系统适应恒功率工况的特性,传动效率可比普通定量泵系统提高7%,又能满足多级恒功率负载的工况。在工况要求转矩输出恒定的前提下,若要求马达输出多级转速,多级恒功率调速系统可以通过控制双定子泵的工作方式以较少的功率满足要求,而传统恒功率调速系统则只能采用节流调速的方式溢流掉一部分流量来满足要求,因此前者比后者减少了能量的损失。该研究既丰富了双定子泵的应用领域,也可为恒功率调速系统应用于农业机械并提高其工作效率提供参考。
[Abstract]:The regulation principle of traditional constant power speed regulation system (the product of rotational speed and torque must be constant) determines that it can not meet the requirements of torque invariant and output different rotational speed. In order to solve the above problems, the double-stator pump is adopted to improve the performance of the multi-stage constant power speed regulating system. The performance of the multi-stage constant power speed regulating system is compared with the traditional system, and the test bench is built to demonstrate the performance of the system. The results show that the multistage constant power speed regulating system with double stator pump has the characteristics of adapting to constant power condition of traditional system, and the transmission efficiency is improved by 7% than that of the ordinary quantitative pump system, and it can also satisfy the condition of multistage constant power load. Under the condition that the torque output is constant, if the motor is required to output multi-stage speed, the multi-stage constant power speed regulation system can meet the requirements with less power by controlling the working mode of double-stator pump. But the traditional constant power speed regulation system can only use throttling speed regulation way to overflow a part of the flow to meet the demand, so the former can reduce the energy loss than the latter. This research not only enriches the application field of double stator pump, but also provides a reference for the application of constant power speed regulation system in agricultural machinery and improving its working efficiency.
【作者单位】：燕山大学机械工程学院;
【基金】：国家自然科学基金资助项目(50975246)
【分类号】：TH137.51

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