电压

Dynamic Voltage Restorer is considered as the most effective device to compensate the voltage sag.

动态电压恢复器是目前补偿电压跌落最为有效的装置。

The anode structure of CI-LIGBT is optimized by numerical simulation, and it is pointed out that segmented p〓 anode region surrounded by n〓 anode region is the key to improve the ability of current limiting, and the more deeper the n〓 anode junction relative to the p〓 anode junction, the more powerful the ability of current limiting is. The affection of the breakdown voltage BV〓 of the reverse biased p〓n〓 junction and the sample resistance upon the latching current, the latching voltage and the on-state voltage have been studied, and it is indicated that the tradeoff between the on-state voltage and the latching characteristics is the excellentest when BV〓 is 1. 1V so that its on-state voltage can be just only 0.6V higher than conventional LIGBT. It is also found that this device is especially suit to high temperature environment. Based on X. B. Chen's surface voltage sustaining structure using optimized variational lateral doping and Ludikhuize's multiple floating rings structure, high voltage LIGBT and is studied in this paper.

通过数值模拟，优化了CI-LIGBT的阳极区结构，指出采用被n〓阳极区包围的单元状p〓阳极区是提高该器件限流能力的关键，而n〓阳极区结深相对p〓阳极区结深越大，器件的限流能力越强；分析了反偏p〓n〓结击穿电压BV〓和取样电阻对器件闩锁电压、闩锁电流和导通压降的影响，得出BV〓在1.1V时器件导通压降和抗闩锁能力间的折衷关系最优，其导通压降仅比普通LIGBT高0.6V；分析了温度对LIGBT闩锁性能的影响，表明CI-LIGBT即使在450K的高温下也不会闩锁，尤其适用于高温工作环境。

It including the pitch point electric current equation andthe return route voltage equation two parts, former pointed out that,regarding any pitch point (3 or 3 above legs points of intersection),flows in and flows out the pitch point various electric currents algebra and is zero, this is the constant condition request, latter pointed out, regarding any closed path, each part of loss of voltage algebra and is zero, this is the electrostatic field ring circuit theorem result, two constituted the complete system of equations.

它包括沥青点电流方程强大的回路电压方程由两部分组成，前者指出，对于任何节点（ 3层或3条以上的腿分的交汇点），流入和流出草地点不同电流代数和是为零，这是恒定的条件要求，后者指出，对于任何封闭道路，每部分的损失电压代数和为零，这是静电场的环形电路定理的结果，构成了两个完整的系统方程式。

This article trend research and current situation of computing technology analyze in survey, through to simple network familiarity that trend calculate, take circuit of simple equivalence as an example, carry on circuit voltage and calculation that power loss of the first part and the concluding paragraph mainly, and then regard a ring network circuit as the main example and carry on the detailed trend to calculate, calculate all nodal voltage power losses, use ATP software to carry on artificial calculation with this example again, it's a pity ATP software emulation has not succeeded.

该文在综述了潮流计算方法的研究和现状分析，通过对简单网络潮流计算的熟悉，主要以简单型等值电路为例进行电路首尾的电压和功率损耗的计算，再以一环网电路为主要例题进行详细的潮流计算，计算各节点的电压功率损耗，再以此例题用ATP软件进行仿真计算，可惜ATP软件仿真没成功。

The pump eliminates the effect of channel-length modulation and makes the charging and discharging currents match perfectly in a wide output range to minimize the ripple of the control voltage.

该电荷泵结构可以很好地克服沟道长度调制效应的影响，使充放电电流在宽输出电压范围内实现精确匹配，从而使频率综合器的压控电压纹波很小。

Thanks to this scheme, the phase, root-mean-square value, frequency, and waveform of the output sinewave voltage can be controlled precisely and the system has excellent steady-state performance, fast dynamic response performance, fast and reliable current cut-off protection function.

提出了一种新的适应"模块化"要求的高性能逆变电源控制方案，该方案是一种带有输出电压相位控制及负载电流前馈控制的多环反馈控制方案，能对输出正弦波电压的相位、有效值、频率、波形进行精确控制，使系统具有良好的稳态、动态特性以及快速可靠的截流保护功能。

A class of fast-scale bifurcations appearing around the maximum value of the input voltage is discovered for the first time by experiment. Then the influence of the fast-scale bifurcations on the performance of the PFC converters is discussed. Whether the fast-scale bifurcations will appear and how wide the bifurcation region depend on the characteristics of the current loop output. Therefore, the main factors that affect the current loop output are analyzed, including the current loop parameters, inductance, and root-mean-square value of the input voltage.

通过实验，该文首次发现了一类在输入电压最大值附近发生的快时标分岔；详细讨论了快时标分岔对PFC变换器性能的影响；由于电流环输出的特点决定了变换器是否会出现快时标分岔以及分岔区域的大小，该文分析了影响电流环输出的主要因素，包括电流环参数、电感值和输入电压有效值。

In order to choose suitable voltage space vector and achieve current-follow-control,it samples stator current with constant frequency.According to the motor-model,optimize-controlled coltage vector is computed at the next sample moment to control actual next stator current so as to follow next reference.

为了选择合适的电压空间矢量，实现电流跟踪控制，以固定频率采样定子电流，按电机模型计算出下一采样时刻逆变器的最优控制电压矢量，从而控制下一时刻实际定子电流去追踪下一时刻参考电流。

This paper studies a new approach, secondary voltage control , to improve voltage stability.

研究了一种新的提高系统电压稳定性的方法——二次电压控制。

Based on the principle of multi-agent based secondary voltage control system the implementation scheme of this system is proposed.

1引言为了解决传统的全局电压控制存在的问题，提高电压控制水平，许多电力系统采取了分级控制的策略[1-4]。

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。