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neutral point     
相关语句
  中性点
     Discussion on 6kV~10kV System Neutral Point Earthing for Large-Scale Smelter
     大型铝厂6kV~10kV系统中性点接地方式的探讨
短句来源
     Neutral Point Earthing Method for 10~35kV Electrical Network
     10~35kV 电网中性点接地方式浅议
短句来源
     New hybrid neutral point treatment for 3~66 kV auxiliary power network
     新型混合式3~66kV自备电网中性点接地方式
短句来源
     Lightning Over-voltage Analysis of 110kV Transformer Neutral Point
     110kV变压器中性点雷击过电压分析
短句来源
     Comparison and Proposal of the Neutral Point Protection Method of Transformer above 110kV
     110kV及以上变压器中性点保护方式的比较和建议
短句来源
更多       
  中和点
     Based on golden section method, the author has established Gan-Chen model which accurately obtain that the position of neutral point and mid-point is located at 0.382 L and 0.618L, respectively.
     笔者应用黄金分割原理建立的Gan-Chen模式,能正确地计算出:桩的中和点在0.382L处; 中性点则在0.618L处。
     The calculation of the mid-point and the neutral point of pile by the GAN-CHEN model
     论桩的中和点和中性点的Gan-Chen模式求解法
     The calculation of the mid-point and the neutral point of pile by the GAN-CHEN model
     论桩的中和点和中性点的Gan-Chen模式求解法
短句来源
     The mid\|point and the neutral point of pile are directly related to calculation of practical bearing capacity of single pile under vertical load.
     桩的中和点和中性点的问题 ,直接关系到在垂直荷载作用下单桩实际承载力的计算。
短句来源
     (2)the torque M n on the rod string segment below the neutral point produced by the helical bending of the rod string is another factor;
     (2) 中和点以下杆柱螺旋弯曲产生的扭矩Mn 主要在螺旋弯曲段对杆柱发生作用;
短句来源
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  中点
     This paper analyzes the neutral-point balancing problem of three-level Neutral Point Clamping(NPC) inverter,and discusses the injected zero-sequence voltage PWM method for neutral-point balancing control.
     分析了三电平中点箝位(Neutral Point Clamping,简称NPC)逆变器的中点电位平衡问题,讨论了通过注入零序电压实现中点电位控制的载波PWM方法,并在此基础上对一种实时控制中点电位平衡的方法进行了改进,提出一种基于零序电压注入的载波交叠PWM方法。
短句来源
     Active filter has structure of diode neutral point clamped three-level inverter.
     有源逆变器采用基于二极管中点箝位式(NPC)三电平结构,它使有源滤波器的工作电压大大提高。
短句来源
     The design,simulation and analysis of a5MV·A NPC(Neutral Point Clamped)inverter equipped with IGCT(Integrated Gate Commutated Thyristors)is presented.
     详细描述了1个5MV·A基于IGCT的中点箝拉式NPC(NeutralPointClamped)逆变器的设计、仿真和分析。
短句来源
     The Analysis of Neutral Point Forming Transformer
     中点形成变压器的分析
短句来源
     High Performance Control Method With d-q Axis Decoupling and Neutral Point Voltage Regulation for Three-Level NPC Voltage-Source Rectifier
     基于d-q轴解耦和中点电位控制的高性能三电平NPC整流器控制方法
短句来源
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  中性点的
     Over-voltage Protection for Neutral Point of 110 kV Staged Insulation Transformer
     110kV分级绝缘变压器中性点的过电压保护
短句来源
     The calculation of the mid-point and the neutral point of pile by the GAN-CHEN model
     论桩的中和点和中性点的Gan-Chen模式求解法
     The calculation of the mid-point and the neutral point of pile by the GAN-CHEN model
     论桩的中和点和中性点的Gan-Chen模式求解法
短句来源
     It is same with the impedance-matching balanced transformer, the high-tension side neutral point may earth directly, suits 110kV and above high voltage transmission system in our country, and may reduce the insulation production cost;
     它既与阻抗匹配平衡变压器一样,高压侧中性点可以直接接地,适合于我国110kV及以上高压输电系统中性点的运行方式,并可降低绝缘制造成本;
短句来源
     In power networks,neutral point′s approach to earth directly has effect on the reliability of supply and the implementation of relay protection.
     电网中性点的接地方式直接影响到电网供电的可靠性及继电保护的实施等多项指标,因此,加强对中性点接地方式的研究,将确保电力系统为适应国民经济而发展的需要。
短句来源
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      neutral point
    The controversy in the literature about the location in silicon bandgap energy of this charge neutral point is addressed, and it is shown that it is located at midgap to a good approximation.
          
    Interface trap and fixed oxide charge densities are separated by use of the interface trap charge neutral point.
          
    Formulas are given for determining the coordinate of the neutral point, according to which the rise of an unloaded pile is found.
          
    A formula is presented for determining coordinates of the neutral point, from which the rise of an unloaded pile is found.
          
    The energy position of a "neutral" point is calculated for CdSiAs2, and thermal stability of radiation defects is investigated.
          
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    A simplified method for computing the end moments and thrusts in continuous arches is presented in this paper. This is a modified successivecorrection method, and is superior to the usual methods in the following two respects: (1) the distributions of moments and thrusts are independent of each other; (2) the distributions are carried at the tops of piers instead of the so called "neutral points", and the procedure is first to balance the unbalanced moments and thrusts of the joints in a very simple manner...

    A simplified method for computing the end moments and thrusts in continuous arches is presented in this paper. This is a modified successivecorrection method, and is superior to the usual methods in the following two respects: (1) the distributions of moments and thrusts are independent of each other; (2) the distributions are carried at the tops of piers instead of the so called "neutral points", and the procedure is first to balance the unbalanced moments and thrusts of the joints in a very simple manner without any relation to individual members, and after few cycles of operation, we add the results and obtain the total unbalanced moments and thrusts of the joints, from these quantities the end moments and end thrusts of individual members can be obtained at once by formulas. The speed of convergence is rapid and the required work of computation is greatly reduced especially for multiplespan continuous arches.

    本文提出一種連續拱的新分析法,這是一種經過處理後的逐次校正方法,它具有下列幾個特點:(1)撓矩與推力之分配各不相涉;(2)分配工作仍在墩頂進行,並將連接於墩頂之各構件間的關係隔開,因而使收斂速度增加,計算工作得大形簡化。為說明簡明起見,本文先就各拱相同和各墩相同的情形出發,但其原則完全可應用到一般性的情况上去。

    Since Singer explained the main phase ring current by charged particles trapped in geomagnetic field, the origin of these particles has become one of the important problems of main phase theory.This article attempts to suggest a mechanism through which the process of penetration of solar wind into the magnetosphere can be traced. If there is no other force than magnetic field, it is known that all charged particles approaching the magnetosphere will be reflected back into the space even arround the neutral...

    Since Singer explained the main phase ring current by charged particles trapped in geomagnetic field, the origin of these particles has become one of the important problems of main phase theory.This article attempts to suggest a mechanism through which the process of penetration of solar wind into the magnetosphere can be traced. If there is no other force than magnetic field, it is known that all charged particles approaching the magnetosphere will be reflected back into the space even arround the neutral points on the boundary. However, because of the diffrential reflection of electrons and protons, a polarized electrical field will eventually be established around the neutral point in westward direction.Under the action of this electrical field, charged particles of small pitch angles will pass through the neutral point.According to the result of numerical integration by an electronic computer, we come to the conclusion that the electron will be captured more easily and with larger probability than the protons.With a suitable choice of the parameter of the solar wind and the capture probability, our result may explain fairly well the theoretical investigation of Parker and others.

    自从辛格用輻射带內电性粒子运动所形成的电流环,成功地解释磁暴主相形成的机制以来,这些带电粒子的来源就成为磁暴主相理論的一个重要問題。本文以两度空間双曲线磁場,对带电粒子的軌道进行初步計算表明:由于貭子和电子的反射方向不同,在中性点附近可以形成由东向西的极化电場。在这个电場的作用下,带电粒子的飘移运动可以通过中性点穿入地磁层而被捕获。据初步估計,我們的計算与帕克尔等的理論結果相符,并可以解释磁暴主相。

    By the mechanism of drift motion of polorized electric field the electrons of the solar wind may penetrate into the magnetosphere through the neutral point. These electrons trapped in the geomagnetic field will drift eastward, carrying a westward electrical current. Before these electrons drift a closed cycle around the earth, the distribution of electrons and consequently the current and the magnetic field recorded at the earth surface of the equatorial region will be asymmetrical with respect to local...

    By the mechanism of drift motion of polorized electric field the electrons of the solar wind may penetrate into the magnetosphere through the neutral point. These electrons trapped in the geomagnetic field will drift eastward, carrying a westward electrical current. Before these electrons drift a closed cycle around the earth, the distribution of electrons and consequently the current and the magnetic field recorded at the earth surface of the equatorial region will be asymmetrical with respect to local time. In the present investigation, we have calculated the variation of magnetic field as a function of storm time Tst recorded at observatories located at 00~h, 06~h, 12~h and 18~h local time. Here we assumed that the period of electron drift around the earth is two days. Theoretical result coincides fairly well with statistical curves obtained from the long series data from Zo-Se and Huancayo Observatories.

    太阳带电粒子流通过磁边界层的中性点或阻塞点,由于极化电場的漂移运动或雷萊-泰勒(Rayleish-Taylor)不稳定运动,穿透磁层而进入地磁場被輻射带所捕获。这些被捕获的电子将向东漂移而形成西向电流。在它們围繞地球一周形成封閉的电流环以前,由于地球的自轉以及这个电流弧对地球各地的相对位置的不同,电流分布以及它在地面磁赤道附近所产生的磁場分布都将是不均匀的,对經度来耕是不对称的。本文假定电子繞地球的漂移周期为两天,計算了当磁暴开始时位于地方时00,06,12及18小时的台站記录的磁場随“暴时”T_(st)变化的曲线。理論結果与用佘山及洪伽幼地磁台站得到的統計結果是一致的。

     
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