【作者】 邹乐；

【导师】 曲建俊；

【作者基本信息】 哈尔滨工业大学 ， 机械设计及理论， 2008， 硕士

【摘要】 集流环是机电系统集电装置中的一个重要部件,在生产生活中有着广泛的运用。延长集电装置的寿命一直是一个热门研究课题,国内外的研究大都着眼于改善接触供电的磨损状况,而在接触供电方式方面研究较少。本文提出了运用电容元件,在机械上实现非接触,而在电路上构成回路的设计思想,研制出一种准非接触电容式集流环。运用电接触理论,建立了电容式集流环的电接触模型,并将其与普通集流环的电接触模型进行比较,得出其磨损降低的理论依据。同时构建了集流环供电系统的电路模型,分析了旁路阻抗带来的影响,并通过试验验证了模型的正确性,为后续的集流环的设计和实验分析提供了理论依据。设计出集流环模拟工作试验装置,在不同电压、频率和负载下,测试了集流环电容值对输出性能的影响,得出了在获得较高效率传输以及稳定的输出性能时,集流环电容值取值范围。进行了一系列设计参数试验,得出了在集流环的电容值达到纳法级时,集流环的核心部件的间隙、面积、材料等方面的要求。研制出一种具有相向圆盘式布置方式的电容式集流环样机,分析了固定安装方式对集流环工作性能的影响。该集流环的直径为Φ80mm,长度为92mm。测试了样机的空载和负载特性,得出了该样机在接入负载(双信号超声马达,每路电容值为0.72nF)后,工作频率f=23.7kHz、激励电压Up-p=300V条件下的输出性能。测试结果,集流环的近端电压、电流和功率传输效率分别为ηU=0.701、ηI=0.879和ηP=0.616。远端电压、电流和功率传输效率分别为ηU=0.794、ηI=0.837和ηP=0.665。准非接触电容式集流环,具有无电烧蚀、低机械磨损等优点,特别适合在高频环境下工作,在增加转换电路后,也可用于低频直流供电场合,有着广阔的应用前景。更多还原

【Abstract】 Current collector is a major components in electromechanical system. As in production and daily life in a wide range of use, collecting devices to extend the life span has been a hot research topic. Most domestic and international research aimed at improving the situation of the wear contact with current, while few studied power supply mode. This paper presents the use of capacitive components, machinery in achieving non-contact, and a loop of the circuit on the design, development of a quasi-noncontact capacitive current collector.Using electrical contact theory, the model Capacitive Current Collector is established, to compare with the general one, which reduce the wear and tear of its theoretical basis. Meantime, the establishment of electric circuit model about power supply system, and the analysis of the impact of bypass impedance and verified through testing the accuracy of the model, provided the design of current collector and experimental analysis with theoretical basis.Set design of Capacitive Current Collector simulation test device, in different voltage, frequency and load, testing the impact of capacitance upon the output performance. Obtained in a higher efficiency of transmission and to stabilize the output performance, the capacitance value range of Current Collecting. Conducted a series of test of design parameters, and obtained the core components of the space, size, material and other aspects of the request when capacitance reached the nF-level.Developed a Capacitive Current Collector prototype with opposite disc layout, and analyzed of a fixed installation on the performance of the work. It has a diameter ofΦ80 mm, a length of 92 mm. Testing the prototype of the no-load and load, the prototype in access load (even signal ultrasonic motors, each capacitance value of 0.72 nF), the frequency of 23.7kHz, incentive voltage of 300V, under the conditions, output performance has been obtained. Test results show that the voltage, current and power transmission efficiency of the near capacitance wereηU=0.701,ηI=0.879 andηP=0.616 respectively. Voltage, current and power transmission efficiency of the remote one wereηU=0.794,ηI=0.837 andηP=0.665 respectively.Quasi-non-contact Capacitive Current Collector, without arc erosion, low mechanical abrasion and other advantages, particularly suitable for work in high-frequency environment, after increasing the conversion circuit, can also be used for low-frequency DC power occasions, with wide application.更多还原