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换向性能     
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  commutation performance
     The air-gap field distribution of PMSM ,which is the basis of the calculation of commutation performance, is studied by analytical method.
     利用解析法分析了永磁起动机电机气隙磁场分布,给出了电枢表面气隙磁密的解析计算方法,据此可进行换向性能的计算。
短句来源
     Improvement of Commutation Performance for DC Machine by meams of Changing Connection of Commutating Pole Winding
     改变直流电机换补绕组接线方式以提高其换向性能
短句来源
     The test results show that commutation performance of the D. C. motor is better.
     试验结果表明这种直流电动机的换向性能是较好的.
短句来源
     The over-limit wear of traction gear causes heavy vibration of traction motor and transmission parts, deterioration of motor's commutation performance, increment of the stress both on armature shaft and gear roots, touque vibration of shaft and axle, damages of relative parts, as well as decline of transmission efficiency of traction motor and driving system, so that the error of traction gear's teeth under load should be strictly controlled.
     牵引齿轮过量磨损会引起牵引电动机及传动装置剧烈振动,电动机换向性能恶化,电枢转轴应力和齿轮齿根应力增大,转轴和车轴产生扭振,有关零部件过早损坏,并使电动机和传动装置传输效率下降,因此,应该严格控制装车牵引齿轮的齿形偏差。
短句来源
  reversing property
     This destructive supportability of brush is tested using examination way,The greater the supportability is,the better reversing property is ,the lesser spark is.
     用试验的方法考核电刷承受这种破坏的能力 ,承受能力越大 ,换向性能越佳 ,刷下火花越小
短句来源
  commutating performance
     This paper introduces how to select the axle suspension roller bearing and to calculate its life, which is used on ZQ800-2 traction motor of SS3 electric locomotive with unilateral transmission. The measures improving the commutating performance of the traction motor is also to be dealt with.
     本文对单边传动SS3型电力机车的ZQ800-2型牵引电动机的抱轴滚动轴承的选择和寿命计算以及改善换向性能等措施作了介绍。
短句来源
     A defailed analysis andevaluation about the ciesig is listed in this paper. Discussions on increase motor continuous powers, improvement commutating performance, raise ratio of constant power to speed are stressed, the author affirmthe improvement measures adopted in design, structure, material, technology of ZD103 traction motor.
     本文对其改进设计作了较全面的分析与评价,侧重讨论了有关提高电动机持续功率,改善换向性能和提高恒功速比等问题,较全面地肯定了ZD103型牵引电动机在设计,结构,材料和工艺等方面所采用的改进措施。
短句来源
     On the basis of analyzing the electromotance in the commutating components of single phase motor,the methods of improving commutating performance through offset reversal from the brush to form a suitable angle β are set forth.
     在分析单相串励电动机换向元件中电动势的基础上,就逆转向偏移电刷一个适当的角度β,来改善换向性能的方法进行了阐述。
短句来源
  commutation performances
     Due to the complexity of air gap magnetic field for the permanent magnet direct current motor,the calculation of commutation performances is one of the problems which are difficult to overcome.
     换向性能计算因气隙磁场的复杂性而成为永磁直流电动机设计计算的难点之一。
短句来源
     In this paper,taking the effects of brushe shift into consideration,the calculation models of no load and load magnetic fields are given and the expression of air gap magnetic field at the surface of armature is deduced,on basis of which the commutation performances can be obtained.
     本文考虑电刷偏移的影响, 建立了空载磁场和电枢反应磁场的计算模型, 导出了电枢表面气隙磁场的解析表达式, 据此进行换向性能计算, 使这一问题的解决成为可能
短句来源

 

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  reversing property
In order to test whether this was due to a self-reversing property of the rocks, samples from these three suites have been examined byx-ray and thermomagnetic techniques.
      
  其他


Commutation parameters of 700kW pulsating traction motors at high speed with minimum field weakening are analysed. It is found that the ac unbalanc- ed electromotive force under such conditions is much larger than that under normal conditions. Therefore, an inductive shunt should be inserted in the adjustable shunt circuit to improve commutation performance at high speed,so as to meet the locomotive running requirement at high speed.The effect of different reactances on decreasing ac unbalanced electromotive...

Commutation parameters of 700kW pulsating traction motors at high speed with minimum field weakening are analysed. It is found that the ac unbalanc- ed electromotive force under such conditions is much larger than that under normal conditions. Therefore, an inductive shunt should be inserted in the adjustable shunt circuit to improve commutation performance at high speed,so as to meet the locomotive running requirement at high speed.The effect of different reactances on decreasing ac unbalanced electromotive force is also analysed. This paper describes several structuralmodifications for improving commutation stability and reducing the possible sparking and flashover.

本文分析了700千瓦脉流牵引电动机在深度磁场削弱的高速工况下的換向参数,发现此时的交流不平衡电势远较额定工况时为大,认为从改善高速換向性能以适应提高机车运行的速度要求出发,在牵引电动机可调分路中应接入一个感应分路器。文內分析了感应分路器的不同电抗值对降低交流不平衡电势的影响。本文还介绍了为改进换向性能、减少环火的几种正在采用的结构措施。

This paper demonstrates the principles of single lap split winding to improve the commutation in traction motor from the point of view of electromagnetic energy and change ratio of reactance potential. It also verifies the transparent effect of the improvement of commutation by single lap split winding by way of contrast test. The paper provides the beneficial experiences for the traction motor which has difficulty in commutation.

本文从电磁能量及电抗电势变化率出发,来阐明异槽式单迭电枢绕组能改善牵引电动机换向性能的基本原理,并通过对比试验证实了异槽式单迭绕组改善换向性能的效果是显著的,这对目前换向困难的牵引电动机将提供有益的经验。

Construction, symmetry conditions and equalizer connections of a multiplex double-closed lap winding of the D.C. motor are analyzed in this paper. Design principles for the D.C.motor are also introduced.The test results show that commutation performance of the D.C.motor is better.

本文分析了直流电机双闭路双叠绕组的结构、对称条件和均压连接线。还介绍了这种直流电动机的设计原理。试验结果表明这种直流电动机的换向性能是较好的.

 
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