active filtering

PI controller is usually the core of control, but there is the limitation of pure PI controller in active filtering.

电流环数字控制器通常以PI调节器为控制核心，但纯PI调节器在有源滤波中存在一定的局限性。

A Research on Uninterrupted Power Supply System with Active Filtering Function

具有APF功能的UPS电源系统研究

The principle and the method of designing ripple attenuator are introduced by combining both active and passive filtering.

介绍了一种综合运用有源滤波和无源滤波设计电源纹波抑制器的原理和方法。

Active filter circuit is made of active device and RC network filtering circuit.

有源滤波电路是用有源器件与RC网络组成的滤波电路.

The active filtering circuit by this design enjoys low sensitivities character of the passive ladder network prototype. Design example of five-order elliptic high-pass filter and its PSPICE simulation result are also given.

用该方法设计的有源滤波电路具有无源梯形网络原型的低灵敏度特性，给出了五阶椭圆高通滤波器的设计例子和PSPICE仿真结果。

For requirements of suppressing harmonics on the dc side of HVDC system, a new hybrid filtering system a shunt passive and a small rated reactor transformer coupling series active filter is presented, and the harmonic compensation and control principles are discussed theoretically in this paper.

针对高压直流（HVDC）系统直流（DC）侧谐波抑制的要求，提出了一种新型混合滤波系统：并联无源滤波器和串联小容量电抗&变压器耦合有源直流滤波器。

The traditional phrase filtering methods are inclined to measure the cohesion of the inner words, and own less discriminate ability with these active noisy.

有别于传统声纹识别系统的是，该识别系统的预处理部分使用言语过滤的方法，特征提取过程采用情感补偿的办法。

This paper discusses the reactive power and harmonic dynamic compensation principle and their scheme combining passive power filtering with active power filtering based on dual DSPs. The main circuit frame and control system of reactive power and harmonic automatic compensation installation are designed.

提出了基于双DSP结构的有源滤波与无源滤波相结合的无功与谐波动态补偿原理和方案，设计了无功与谐波自动补偿装置主电路结构与控制系统。

The passive filtering technology is used after analyzing the features of passive filtering and active filtering.

通过对无源滤波和有源滤波特点的分析，本充电机采用了无源滤波技术。

This research is to design control system for 3 MVA medium-voltage SVG with active filtering.

本文研究的目的是研制3MVA有源滤波型中压静止无功发生器的控制系统.