变换元件

Integrated gate commutated thyristors are the key components to assure reliable and efficient operation of high power inverters.

集成门极换流晶闸管是大容量变换器高效可靠运行的重要元件。

Comparing with existing solutions, new method can utilize generators' speed signal measured by wide area measurement systems directly and detailed model and parameter of power system components were not needed. After sphering measurement-data, ICA with maximal negentropy criterion was carried out to obtain feature matrix. By this means high-dimension data of multi-machine perturbed trajectories were reduced to lower dimensions, and coherent generator groups were identified by pattern recognition consequently. Simulation results of 36-bus system with 8-generator and planning northwest China 750 kV power grid show that noise signals and bad data can be eliminated. This method is accurate in identifying coherent generator groups.

与现有方法相比，这种方法不需要获得系统元件模型和参数，而是直接球化广域测量系统(wide area measurement systems，WAMS)提供的发电机电角速度信号，再利用最大负熵准则进行独立分量分析得到特征矩阵，将高维数的多机受扰轨迹数据变换到低维空间，通过模式识别得到分群结果。8机36节点系统和西北750 kV电网规划系统算例表明，该方法能有效消除噪音和坏数据的影响，准确识别出同调机群。

The belt of parallel coupling microstrip that because orgnaization of these two kinds of coupling applies at having respectively,centers transformer of component K impedance connects filter, can make the structure of filter of this kind of microstrip more compact.

由于这两种耦合机构分别应用于具有集中元件K阻抗变换器的平行耦合微带带通滤波器，可以使这种微带滤波器的结构更紧凑。

Liquid crystal spatial light modulators are important components in the processing of optical information.

液晶空间光调制器是光信息处理中的重要元件，利用它的振幅和位相调制特性可以实现各种光学变换和信息处理。

Some circuits use passive snubbers or active clamp techniques. However, these converters become more complicate.

能量缓冲吸收电路或有源钳位电路方案，由于需要增加多个额外辅助元件，增加了变换器的复杂性。

The Strip by testing guide roller imposed load, so that the tension sensor sensitive element generated displacement or deformation, so as to detect actual tension values, and set this tension data into tensility signal back to the tension controller.

料带堵住检测导辊承受负载，使压力传感器敏锐元件爆发位移或变形，从而检测不入本质压力值，并不兵此压力数据变换不败压力暗记反馈给压力把持器。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。