查询词典 grid current

In this paper, a novel Crowbar control strategy is proposed to limit the over current in the rotor and the over voltage of the DC bus as well as the transient oscillation of the electromagnetic torque. Moreover, a capacitive current is injected into the grid to assist the recovery of the grid voltage.

文章提出了一种Crowbar控制策略，能有效抑制转子过电流、直流母线过电压以及电磁转矩的振荡，并可向电网注入无功电流以帮助电网电压的恢复。

According to the development plan of North China Grid and the short circuit current increasing cycle and period of Beijing-Tianjin-Tangshan Grid,rational control scheme of short circuit current and countermeasures are put forward.

根据华北电网的发展规化，针对京津唐电网短路电流增长的周期性和阶段性，提出了合理限制短路电流水平的思路和对策。

This paper introduces the concept of grid, features, introduced the development of grid technology in the current status quo of grid technology in various fields of application.www.lwfree.cn

本文介绍了智能网格的概念、特点，介绍了智能网格技术在当前的发展现状，探讨了智能网格技术在各领域的应用前景。

In this paper, the basic concept of grid, grid definition of net格特, grid computing in detail, and the current grid mesh architecture and the application of innovative research.

本文对网格技术的基本概念、网格定义、网格特点、网格计算进行了详细的介绍，并对目前网格的体系结构和网格的应用进行了创新研究。

By the research for current technique of grid and secure, and integrating with Web Service which is gradually mature, this paper presents a grid secure architecture based on Open Grid Service Architecture.

本文通过对现有的网格和安全技术的研究，结合逐渐成熟的Web服务技术，提出了一套基于开放式网格服务结构的网格安全体系。

After a master glyph outline is scaled from the EM grid to the current character dimensions, the hinter or grid-fitter is in charge of aligning important outline points to the pixel grid.

在主字形轮廓从EM网格缩放到当前字符大小后，hinter负责对齐重要的轮廓点到象素网格。

The short-circuit current in some parts of Shanghai Power Grid that is the receiving end of East China Power Grid exceeds limits, which forces the structure and the operation modes of the 500 kV grid to make some adjustment, and the 500 kV double-loop-network is compelled to uncouple in certain conditions.

作为华东电网的受端的上海邵分厂站500 kV短路电流的超标，迫使500 kV电网结构或运行方式做出相应调整，500 kV双环网在一定情况下被迫解环。

According to the definition and the distribution of VSR's voltage space vector, the introduction of a rule-based SVPWM current control strategy, with non-fixed switching frequency and dual hysteresis loops, that obviously improves the performance of current control. Based on two kinds of control strategies of VSR under unbalanced grid condition, the introduction of a new VSR control strategy featuring undamped-oscillation that simplifies the controller structure and effectively improves VSR's performance under unbalanced grid condition. A systematic description of the state switching in trilogic PWM signal generation of threephase CSR by using the conversion between bilogic and trilogic switching functions.

作者在如下工作的基础上对PWM整流器的一些关键问题提出了自己的研究思路、观点和方法：根据PWM整流器网侧矢量关系，直观地描述了其四象限运行的基本原理及特征；定量分析了VSR、CSR的PWM换相过程及波形特征；引入等效变压器模型并详细分析了VSR、CSR基于d—q模型的动、静态特性；提出了满足四象限有功、无功运行指标时的VSR交流侧电感设计方法；并提出了依据控制系统跟随性和抗扰性性能指标设计VSR、CSR直流侧储能元件的参数计算方法；在研究了VSR电流控制策略基础上，提出了影响VSR电流控制的几个要素，并进行了定量分析；根据VSR空间电压矢量的定义及分布，提出了基于规则控制的不定频滞环空间矢量PWM电流控制策略，并由此提出了具有双滞环特性的不定频滞环优化SVPWM电流控制策略，有效地改进了滞环PWM电流控制性能。

Because of the serious power supply and the problems in security and stability of the grid, it is very important to have an delaminating and districting operation in Zhenjiang's power grid, thus to prevent the hidden trouble that the high fault current would bring to the secure operation of the power grid, and also the power transmission can be assured at the same time.

在目前供电形式严峻、电网安全稳定问题突出的局面下，合理的对镇江电网进行分层分区运行，减小短路电流过大对电网安全运行带来的隐患将起到非常重要的作用，同时也为镇江电力外送提供保障。

The main content of research on interactive visualization grid includes building grid to aggregate large-scale resources, creating visualization applications on the grid and providing interactive visualization services to end users. Among the current work on visualization grid, few have been done systematically, and most are based on existing parallel visualization systems, which are often platform dependent and not scalable. Besides, interactiveness is often neglected in a certain degree.

通过引入网格技术构建交互式可视化网格，在更广的范围内聚集和利用计算机资源并向更广范围内的用户提供交互式的可视化服务，已经成为可视化研究中一个新的重要研究方向；由于其强烈的用户交互性特点，交互式可视化网格研究也成为网格研究领域内的一个新方向。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。