空载电流

电动机空载电流变化的原因及实例分析

The Example and the Analyzing for Cause of Variation in No-load Current of Motors

额定电压下线路电流的平均值即是空载电流。

The average of the line currents at rated voltage is the no-load current .

采用电主轴定子电压、定子电流、空载电流和主轴转速作为辅助变量，建立了基于BP神经网络的负载扭矩软测量模型。

The soft-sensing model based on BP neural network is built up , using the spindle 's stator-voltage , stator-current , no load current and spindle speed as secondary variables .

为了增强开断空载电流的能力，在SF6断路器的旋弧式灭弧室中加入永久磁场。

For increasing the interrupting capability at no load current , permanent magnetic field is drawn into the arc-rotated interrupter of sulfur hexafluoride ( SF 6 ) circuit breaker .

谈弧焊机的空载电流与节能&兼讨论我国弧焊机标准中空载电流的规定

Energy Saving and Open Circuit Current in Arc Welding Machine

三相心式变压器空载电流不对称性研究

Research of the unbalance of no-load currents in a 3-phase core-type transformer

异步电动机空载电流过大原因分析及修理对策

Reason Analysis and Repair Countermeasure on over Intense Idling Current of Induction Motors

主变压器采用进口优质冷扎硅钢片铁芯，其功耗少，空载电流小。

The main transformer uses imported quality cool-rolled silicon-steel plate cores , less power loss and small idle current .

该系列点焊机，主变压器均为进口冷轨硅钢片，因此，主变压器功耗小，各型空载电流小。

Its main transformer is made of imported cold rolled silicon steel , So its power loss is little with low no-load current .

最后，本文利用设计的电路和软件进行了一定的电机驱动实验，主要包括系统调试过程、空载电流实验、空载恒定速度实验以及加载实验等，并就出现的现象进行了分析与讨论。

System debugging process , no-load current experiments , no-load constant velocity tests and loading experiments are included . And the phenomenon are analyzed and discussed .

永磁体分散性对空载电流、空载功率因数、负载功率因数和过载能力影响较大，而对额定运行时的效率、电流影响不大。

In addition , the dispersibility has great effects on the noload current and power factor while the effect on rated efficiency and rated current is little .

并针对斩波电路中工频分量对焊接变压器正常工作的影响进行了分析，通过试验选取合适的串联电容，有效的降低了变压器两端的工频电压及空载电流。

Effect of power supply frequency to the welding transformer in the main circuit has been analyzed , and , through lab testing , appropriate series capacitance has been selected , which effectively reduce power voltage and no-load current of the transformer .

本文简述了JDS&I型动力假手自动增力机构的工作原理，并通过试验，对其进行了改进，使动力假手仍保持反向能自锁，而且实现了合指空载电流的下降和握力的提高。

This article gives a brief description of JDS-I automatic force booster mechanism that can experiments the design has been improved . It still keeps the function of self-locking in the reverse direction lowers the idling current during finger closing and increases the grip strength when grasping .

论文分别对空载补偿电流、带钢重量补偿电流、活套张力电流、活套力矩动态补偿电流计算，得到前后活套转矩电机总的张力补偿电流；

By calculating no-load compensation current , weight compensation current , accumulator tension compensation current , dynamic torque compensation current , the total torque compensation current is gotten .

电力机车空载合闸瞬间电流的分析与研究

Analysis of the flash current of electric locomotive ′ s no - load turn - on

变压器空载合闸引起电流保护装置动作的原因分析与解决方法

Analysis of Causes and Solving Method of Action of a Current Protective Device Caused by No-Load Closing of a Transformer

变压器空载投入电网冲击电流的仿真

Simulation of Impact Current when Putting a No-load Transformer into Power Network

空载电压、短路电流和输出功率沿通道的分布；

The open-circuit voltage , short-circuit current and power distributions along the channel ;

对配电变压器空载损耗和空载电流超标原因进行了分析，提出了解决问题的措施。

The overproof reasons of no load loss and current in distribution transformer are analyzed . The measures to solve the problem are presented .

设定空载电压、短路电流；

Insolation of the main circuit from the controlled circiut and the setting of open circuit voltage and short circuit ensures normal performance of IGBT .

本文结合供配电工作实践，简要论述对同步电动机采用最佳励磁电流控制，降低拖动轧机的同步电动机的空载运行期间的电流，减少空载损耗，实现节约电能。

This paper combined with distribution work and explained briefly optimizing encourage magenetic current control to decrease unload loss for synchromotor , realizing economic power saving .

在仿真部分，本文主要对空载、施加转矩电流和施加牵引力电流三种情况进行了求解，并在后处理中导出了三种情况下的磁通密度。

In the simulation , the models in three kinds of condition including no-load , applying torque current and applying force current were solved , and the magnetic flux density was imported and plotted in the post-processing .

分析了五级接缝铁心降低空载损耗、空载电流及噪声的机理，指出铁心采用五级接缝铁心结构能够大幅度提高变压器的空载性能。

The principle of reducing the no - load loss , no-load current and noise of five-step laminated core is analysed . The analytical result shows that the structure adopted five step laminated core can improve no-load performance obviously .

对几台240MVA/220kV双绕组升压变压器的空载损耗、空载电流和短路阻抗这几个重要参数的试验数据和设计计算值进行了比较与分析，得出了这些参数的一些经验系数。

The testing results and the calculating results of the perameters such as no-load loss , no-load current and short-circuit impedance of several 240MVA / 220kV double-winding step-up transformers are compared and analyzed . The experienced coefficients of the parameters are given .

变压器的空载试验中，由于功率因数低，空载电流不是正弦信号，高精度测量其有功功率具有一定的难度。

In the no-load test of transformer , because of the low power factor and non-sinusoid current waveform , the high precision measurement is difficult .