voltage loop

In order to make more effective control of universal power quality controllers ( UPQC), an outer loop model for the voltage loop in a three-phase three-wire UPQC is proposed in the paper.

为了对通用电能质量控制器直流侧电压进行更为有效的控制，提出一种用于三相三线通用电能质量控制器（UPQC）直流侧电压控制的外环模型。

The dissertation builds up computer simulating model of voltage loop control.

建立了电压环控制的仿真模型.

The paper proposes a PFC voltage loop simulation model based on system modelling method.

提出了一种基于系统建模法的PFC电压环仿真模型.

According to the improved pulse compensation circuit, the relation between pulse compensation and crossover frequency of the voltage loop is analyzed, and the parameters of the voltage loop are optimized.

在优化的脉动补偿环节的基础上，分析了脉动补偿和电压环穿越频率的关系，对电压环部分的参数作了优化。

A improved I p I q detecting method is put forward. In order to select phase A fundamental positive sequence voltage, a voltage selected unit based on low pass filter is used to replace the phase lock loop of I p I q detecting method.

之后提出了一种改进的ip-iq检测法，在该检测法中用基于低通滤波的A相正序电压提取单元代替原ip-iq检测法中的锁相环，以提取A相正序电压。

The insulation class F or class H. The insulation of open-loop U/ f condition of. structure has the adaptability to high carrie frequency voltage supplied by frequency converter.

电动机的绝缘等级为F级或H级，绝缘结构具有对变频器输出高载波频率电压的适应能力。

Improvement on voltage-adjustable control loop of self-saturation resistors

自饱和电抗器调压控制回路的改造

There exist a relation of triangular wave curve between voltage of tuned loop and external flux.

回路输出电压与外磁通为三角波曲线关系,再受静磁场作用时曲线移动,据此可测磁通量子.

The pressure control module is designed to control the polishing pressure in real-time, through output 0-10 voltage to the electric valve, which constitutes the closed-loop control with the S-type pressure sensor, data acquisition card for real-time monitoring.

其中，压力控制模块通过向电气比例阀输出0-10V的电压值来连续控制抛光压力，并且选用了S型拉压力传感器通过数据采集卡对其进行实时监测，构成闭环控制；

Kirchhoff's voltage law is applied to describe the relationship of voltages that are included in the loop you concern.

基尔霍夫电压定律用来描述你所关心的回路所包含的各电压之间的关系。

Voltage Loop Judgement Method For The Three-phase and Three-cell Electric Energy Meter

三相三线电能表电压回路错误接线判别方法探讨

The basic principle of DSP digital control BOOST-PFC is presented. The small-signal power model of voltage loop and current loop is setup. The optimal parameters of control system are calculated in theory.

文中阐述了DSP数字控制BOOST-PFC的基本原理，建立了电压环、电流环的小信号功率模型，从理论上计算控制系统的最佳参数。

Using system zeroes and poles approach, analysis of voltage loop frequency compensation is also presented. Stability is realized through internal compensation.

本文还从零极点的角度对电压环路的频率补偿结构进行了分析，并利用内部补偿实现了稳定性设计。

Outer loop is voltage loop which controls base time to assure arc length adjustment quickly in external disturbance through welding voltage feedback to reach arc length stable.

外环电压环通过弧压反馈控制基值时间来稳定弧长，保证电弧在焊接过程中遇到外界干扰能快速进行调节。

On this basis, according to the function and operational characteristics of the three-level inverter, the structure of the main circuit is determined. And the double loop control strategy, which consists of outer voltage loop and inner current loop.

在此基础上，依据三电平双向逆变器的特点确定其主电路结构，并采用电压外环、电流内环的双闭环控制策略。

Simulation of Constant Voltage Switching Power Supply with Feedback Loop

高频开关电源的闭环仿真研究