The parallel control scheme in this paper is based on instantaneous values feedback control of voltages and currents. 本文提出基于电压与电流瞬时值(IV)反馈控制的逆变电源并联方案。
Bus differential protection based on instantaneous values may make wrong decision because of CT saturation. 基于瞬时值(IV)差动的母线保护由于受电流互感器(CT)饱和的影响而容易误动作。
The ANALYSATOR HANNOVER evaluates statistically probability density distributions PDD and class frequency distributions CFD of different stochastic variables and calculates from the instantaneous values of welding voltage u and welding current I, the True Electrical Power Input as the linear mean value of all multiplications UI. 汉诺威分析仪采用统计学的概率密度分布PDD和频段分布(CFD)方法对不同的随机变量进行评定,通过对瞬间焊接电流(I)与电弧电压(U)乘积的计算而获得真实电能功率。
The device not only monitors the instantaneous characteristics of the granular media in dual phase flow but also analyses the data and displays the instantaneous values, statistic average values in digits. The system also features process alarm, regulation and external printout. 该装置不仅能连续监测气固两相流中的颗粒流动瞬时特征,而且能对数据进行分析,瞬时值(IV)及统计平均值用数显方式显示,系统还具有过程报警、调节、外接打印等多功能。
Study on adaptive action criterion of current differential protection based on instantaneous values 基于瞬时值(IV)的自适应电流差动保护动作判据的研究