磁发电机

Companies give full play to the technological advantages of Tsinghua University, the traditional hydro-generator equipment for technical improvements, development, the introduction of efficient runner, has developed a hydraulic automatic adjustment of excitation automatic control, remote monitoring parameters and super output reactive Shuilun automation power generating equipment, power station can increase the overall economic efficiency of over 10%.

公司充分发挥清华大学的技术优势，对传统的水轮发电机设备进行技术改进，研制、引进高效转轮，开发了具有水压自动调整、励磁自动调控、参数远程监控以及超强输出无功功率的自动化水轮发电设备，可整体增加电站经济效率10%以上。

The wave of the harmonic winding voltage and the no-load characteristics curve of the harmonic excited synchronous generator.

得出了谐波励磁同步发电机的旋转磁场波形、谐波绕组电压波形以及谐波绕组空载特性曲线。

And a new method ,named three-segment method , is present to analysis harmonic winding no-load property curve for synchronous generator by third harmonic excitation.

并提出了一种分析三次谐波励磁同步发电机谐波绕组空载特性的新方法——三段法。

Excitation system of synchronous generator contains saturation element for effect of practical actuator, which has characteristic of input saturation nonlinearity.

同步发电机励磁系统由于受到物理结构的限制，系统输入含有饱和环节，具有非线性特征。

A macro and micro and chemical element analysis was made on fracture of ruptured coupling bolts,torsion test was performed and stress analysis and calculation were made,the results show that when the steam turbine had failure,MP-LP rotor coupling bolts and generator-exciter rotor coupling bolts failure were classified as overload shear fracture with partial deformation .

对215MW汽轮机断裂的对轮螺栓做断口宏观、微观分析，化学元素分析，扭转试验及受力分析计算，结果表明汽轮机组在事故中，中压-低压转子对轮螺栓和发电机-励磁机转子对轮螺柱的失效类型为：过载剪切断裂，同时局部挤压变形，这是由于事故过程中轴系受到冲击扭矩作用而引起的。

The method of how to analyze the electromagnetic field of the generator is introduced. And with the help of a kind of FEM software, the parameters of a model machine are calculated and simulated, including the electromagnetic field, no-load voltage, single-side magnetic force, loaded torque and axial force.

其次，对转子带防护罩的高速永磁发电机数学模型进行了推导，介绍了利用有限元法对电机磁场进行分析的方法，并运用有限元软件对一台样机的参数进行了仿真，包括电机磁场分析、空载电压波形、单边磁拉力、负载转矩以及轴向力等方面的内容。

Simulation results show the advantages of short settling time, small overshoot and strong robustness.

并探讨了其在水轮机调速系统和发电机励磁控制系统中的具体实现。

As a new control means, nonlinear optimal excitation control can improve effect of percussive load on stability of power system effectively.

提出用大型发电机的非线性最优励磁控制这种新型的控制手段，抑制冲击负荷的影响。

It was in doubt for long time whether the static-excitation could be used to improve Subsynchronous Resonance condition in a certain power system with serial compensation.

汽轮发电机采用静止励磁方式使轴系缩短并减少了一个质块，是否可以去掉有危害性的扭振频率，而扩大串补系统中次同步谐振安全运行区范围的问题为工程技术人员所关心。

The deviation of geomagnetic and rotation axes of the earth is considered in the calculation. Except the dynamo effect induced by the neutral wind, the driving electric field across the polar cap and the region 2 fieldaligned current, caused by the magnetospheric coupling, are also taken into account.

计算中考虑了地磁和地理坐标间的偏离；除中性风场感生的发电机效应外，还包含了磁层耦合(极盖区边界的晨昏电场和二区场向电流)的驱动外源。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。