1、

Study of Analysis and Control to Central China Region Power Grid's Low Frequency Oscillation

华中区域电网低频振荡分析及控制的研究

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2、

in the program of plc, technology of frequency division and matrix of switches is analyzed and solved. the one to one relationship between the output points and computer's power switches helps the system to control the power of each pc.

在PLC的编程中,采用了分频技术、n×m矩阵技术,建立其输出节点与被控对象&微机电源开关量之间的点对点关系,对微机电源开关进行控制。

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3、

the control-circuit has the functions of oscillation frequency set, current leading edge blanking, over-current protection, temperature protection, and soft-start. at last this paper presents an application in 220v/ 20a switched power supply.

主要介绍了UC3825A/B的管脚功能,设计了控制电路,可实现精确的振荡频率设定、尖峰电流消隐以及过电流、热保护和软启动等功能,并给出了在220V/20A开关电源中应用方法。

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4、

The double moder control of francis turbine governing system Primary frequency regulation test of hydraulic turbine governor under power closed loop adjusting mode

混流式水轮机调节系统双模控制器的研究水轮机调速器在功率闭环调节模式下的一次调频试验

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5、

Research of the Megawatt Level Variable Speed Constant Frequency Wind Power Unit Control System

兆瓦级变速恒频风力发电机组控制系统

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6、

In this article, a compact structure and energy-saving variable frequency close hydraulic power unit is introduced. The control character of this unit using PID has studied. The response characteristic of the system has improved using PID control.

针对一种结构紧凑、节能的变频闭式液压动力单元进行了PID控制特性仿真研究,采用PID控制时能改善系统的的响应特性,使系统速度和压力达到预定的控制效果。

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7、

A model of hybrid power system based on learning automata is proposed and applied to the frequency control in emergency.

提出了一种基于学习自动机的电力系统混杂控制的结构模型,并把这一模型用于电力系统紧急频率控制中;

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8、

The frequency control in emergency of hybrid power system based on learning automata

基于学习自动机的混杂电力系统紧急频率控制

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9、

Therefore, Frequency hopping communication is very suit for peer to peer networks without power control, such as frequency hopping communication for military 、 urgency Ad-hoc network for edge region.

所以,跳频通信非常适合无中心控制的网络,如军事跳频通信网络、边缘地区紧急Ad-hoc网络等。

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10、

IGBT emerged in early 1980s as a new type of entire-control power electronics transistor. The Induction-heating Power Supply ( ISP) with power of hundreds kilowatt and frequency between 10~ 100 kHz is popularly used in induction-heating field.

IGBT是80年代初出现的新一代全控型电力半导体器件,在感应加热领域生产的功率达数百千瓦、频率10~100kHz的IGBT超音频电源,正得到广泛应用。

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12、

The main circuit is composed of a non-controlled rectifier and a single-phase full-bridge IGBT inverter circuit to regulate the frequency and power.

主电路采用单相不控整流IGBT全桥逆变电路,调节频率调节功率。

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13、

With the development of solid state power devices and DSP, variable frequency vector control based on DSP has been the trend for electromotor control.

随着电力电子器件和数字信号处理器的发展,基于DSP的变频矢量控制逐渐成为电机控制的趋势。

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14、

Based on the area control error ( ACE) and frequency deviation, the total regulation power is corrected to be more suitable for CPS.

进一步根据区域控制偏差(ACE)和频率偏差的大小与方向,对区域总调节功率予以修正,以进一步提高CPS指标。

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15、

On the premise of guarantee node real time performance, the policy can not only dynamically control idle task to enter sleep mode but also reduce processor frequency to achieve better power save effect through DV/ FS-RM or DV/ FS-EDF algorithm.

在DPM动态控制空闲任务进入休眠的同时,在保证节点的实时性的前提下,通过DV/FS-RM或DV/FS-EDF算法降低处理器频率,达到更好的节能效果。

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16、

The GPIB instrument remote control system based on Lab windows/ CVI consists of FSP frequency analysis instrument, signal generator, power amplifier, etc, and connects with the main control computer through GPIB BUS.

利用Lab windows/CVI的GPIB虚拟仪器远程控制系统,由FSP频谱分析仪、信号发生器、功率放大器等仪器组成,并通过GPIB总线与主控计算机相连。

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17、

Relying on the model, the unstable influence of the structure resonance is eliminated with an incomplete differential PID control algorithm. The control bandwidth can surpass its structure resonance frequency and wide bandwidth control can be realized through applying linear power amplifier.

依据模型,以不完全微分PID控制算法来消除结构谐振的不稳定影响,采用线性功率放大驱动方式,可使控制带宽超过其结构谐振频率,实现高带宽控制。

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18、

Soft switching control of high frequency induction welding power supply with PWM and PFM

高频感应焊接逆变电源PWM和PFM软开关控制

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19、

Analysis and Optimization on Control Strategy of Primary Frequency Regulation in Power Plants

电厂一次调频控制策略的分析及优化

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20、

Application study of automatic-generation-control unit in primary frequency regulation of power network

自动发电控制机组在电网一次调频中的应用研究

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