Inner Model Control of Inverse System for Three Phase Voltage Mode PWM Rectifier 三相电压型PWM整流器的逆系统内模控制
Study on inverse problem of electric field for high voltage SF_6 arc quenching chamber 高压SF6断路器灭弧室电场逆问题求解研究
The simulation results indicate, that, compared with the traditional controller, the total controller based on the theory of inverse system can improve not only the system's transient stability, but also the precision of voltage control. 仿真结果表明:与传统的常规单变量控制器相比,基于逆系统的综合控制方法不仅能够提高发电机在暂态情况下的系统稳定性,而且能提高电压控制精度。
Study on Inverse Problem of Electric Field of High Voltage Ceramic Insulators and Its Application in Insulator Detection 高压瓷质绝缘子电场逆问题的研究及其应用
It also draws conclusions that arc power will decrease all the time if the source voltage is less than minimum arcing voltage, the ratio of inductance stored energy to source applied energy is in inverse proportion to the source voltage. 如果电源电压小于最小建弧电压,电弧功率将随时间而减小;电感储能与电源供给能量的比值与电源电压成反比。
Based on distribution parameter node admittance equations and the method of the numerical inverse Laplace transformation ( NILT), crosstalk coupling voltage responses are analyzed at terminals of transmission lines with common ground. 基于传输线分布参数节点导纳方程和数值拉普拉斯反变换(NILT)方法,仿真分析了传输线串扰电压响应及传输线参数和端接阻抗对串扰电压峰值的影响。
Based on the system inverse idea power angle δ and terminal voltage ν t are chosen to be outputs, then α-order integral inverse system and nonlinear decoupling optimal control law is designed. 基于逆系统思想选取功角δ和发电机输出电压νt作为电力系统的输出,获得了电力系统的α阶积分逆系统,由此设计了非线性解耦最优控制律,以同时提高系统的综合性能。
Based on the nodal admittance matrix of faulty transmission line in complex frequency domain, this paper applies another numerical inverse Laplace transform ( NILT) to analyze the voltage response at the ends of transmission line. 本文应用分布参数故障传输线复频域布参数节点导纳方程和另一种数值拉普拉斯反变换方法,对故障传输线首末端电压响应进行了分析。
The development of 80 kW inverse power supply with 20 kH PWM IGBT circuit solved the problems of high output voltage, high output current and strong interference of high frequency. 80kW级20kH脉宽调制IGBT逆变电源解决了输出电压高、输出电流大、高频干扰强等一系列难题,工作可靠。
The general inverse time characteristic is introduced, and the setting principles of current and time when inverse time characteristic is scarce or voltage transformer breaks are provided. 介绍了普通反时限特性,并提供了缺乏反时限特性段或电压互感器断线时的电流、时间整定原则。
A detection approach of the shunt active power filter is proposed based on adaptive inverse control. The value of the fundamental active current needed by the mains current is determined through controlling the DC capacitor voltage. 提出一种新的并联型电力有源滤波器的检测方法,通过控制有源滤波器直流电容电压来确定电网电流所需的基波有功分量的幅值,首次将自适应逆控制用于电力有源滤波器。
Anti-inverse charge of voltage current switching over 电压切换回路防止反充电
In this circuit, an inverse scaling technology is adopted and low voltage drop active inductor is used as active load to extend the bandwidth. 采用反比例级联结构和低电压降有源电感负载来提高系统带宽,达到了设计目标。
The push-pull output circuit made up of a pair of MOSFETs was used in the driver circuit. The Pspice simulation results indicated that the peak inverse voltage on MOSFET switch could be clamped by RCD. 利用Pspice软件对开关上有无剩余电流电路(RCD)两种情况进行仿真,结果表明,加装RCD电路可以有效吸收MOSFET在关断瞬间产生的反峰电压。
This paper carried on the detailed analysis of many algorithm including three-step current protection algorithm 、 inverse time zero sequence current protection algorithm and voltage protection algorithm, and gave the DSP programming flow chart. 并对包括三段式电流保护、反时限零序电流保护、电压保护等算法详细分析,给出了在实现DSP编程中流程图。
Using this sub-circuit, minimum duty-cycle is proportional to output voltage and inverse proportional to input voltage. 这个模块生成的最小占空比与输出电压成正比,与输入电压成反比。
Due to the inverse distribution between energy resources and load demands in China, the strategic objective of developing UHV transmission backbone coordinated with multi-level voltage grid was put forward by State Grid Corporation of China. 基于能源资源和负荷需求逆向分布的国情,我国国家电网公司提出了建设以特高压电网为骨干网架、各级电网协调发展的战略目标。