主磁通

本文分析了YCT电机空载和在不同电枢反应影响下磁场分布情况，尤其是分析了主磁通分布和受电枢反应影响的变化情况，为在工程上统一设计方法奠定了基础。

This paper has analysed the magnetic field distribution in YCT under noload and the influence of different armature reactions , and especially , the main flux variance with armature reaction . We provide the foundation to unify the design for engineering .

电源电压变化时，异步电动机主磁通随之变化，与之相应的激磁电感参数将是一个变数。

The main flux of asynchronous motor varies with the power voltage and the para-meter of excited inductance becomes a variable .

为了提高电机每极下的主磁通和气隙磁密，提高永磁体的利用率，将90°Halbach阵列应用到电机中，提高了电机的性能。

In order to increase the magnetic flux under per pole and the flux density in the air gap , improve the utilization of permanent magnet , 90 ° Halbach array is also applied .

水冷壁管壁厚主磁通超声波融合检测方法

A Method Combining the MMF Technique with Ultrasonic to Inspect the Wall Thickness for Water-wall Tube

在此基础上计算了横向磁场永磁直线电机的定位力特性、空载主磁通波形和通电时的力&位移特性，并对其进行了相应的分析。

The characteristics of the cogging force , no-load flux linkage and force vs. displacement are also worked out based on it .

电流通过其在电机中产生主磁通的绕组称为励磁绕组。

The winding through which a current is passed to produce the primary source of flux in the machine is called the field winding .

提出采用主磁通与漏磁通相结合的方法检测在用油管剩余壁厚的方法。

A measuring method combining main magnetic flux and magnetic flux leakage for approaching the residual wall thickness of the oil well tubing in-service was presented .

该原理通过消去变压器回路方程中直接体现主磁通的非线性项，构造了仅含漏电感和绕组电阻的二端网络。

By eliminating the mutual flux leakage in the transformer loop equation , a two-terminal network only containing the winding resistance and the leakage inductance is generated .

采用文中提出的弱磁方法不会使气隙主磁通波形发生畸变，控制简单，弱磁效果明显。

The field weakening control method proposed in this paper has many advantages such as simple control , not distorting air gap flux waveform and having obvious effect of field weakening .

壁厚是电站锅炉水冷壁管质量监测的一个关键指标，为了实现对水冷壁管的快速无损检测和质量评价，提出了主磁通检测与超声波检测相融合的壁厚检测新方法。

Wall thickness is a key index for water-wall tube inspection in power plant , in order to inspect the tube quickly and evaluate the wall thickness quantitatively , a new method combining the magnetic main flux ( MMF ) with ultrasonic technique was proposed .

尺寸过小时，其内部的主磁通时减小的，输出功率也时变小的；尺寸过大时，虽然漏磁减小，输出功率增大，但是体积和质量也相应的增加。

Size is too small , the main magnetic flux when the internal reduced output power is also time-varying small ; size is too large , though reduced magnetic flux leakage , the output power increases , but the volume and a corresponding increase in quality . 3 .

提出根据互感器主铁心谐波磁通直接测量电力系统谐波的方案。该方案因其直接的测量原理具有很高的实时性、准确性。

A principle of measuring harmonics directly according to the harmonic magnetic flux in the main core of the current transformer is proposed .

补偿电流在辅助铁芯中产生磁通，使主铁芯达到零磁通，从而减小误差。

The compensation current results in flux in the auxiliary core , making the flux of the main core zero , and thus reduces the error .