负载电流

重点介绍了一种采用DC脉冲负载电流测方式方法的测仪。

The paper emphasizes a kind of test device adopting test method of DC pulse load current .

采用负载电流周期平均模型（PAM）构建控制模型。

The control model is constructed with the Period Average Model ( PAM ) of the load current .

基于负载电流前馈的PWM整流器电压控制研究

Study on the Voltage Control of PWM Rectifier Based on the Load Current Feed-forward

文中给出了样机在不同工作方式下PWM控制信号的输出波形和逆变器负载电流波形，实验结果证明了该通用逆变器的可行性。

The experimental results of a prototype show the feasibility of the proposed universal inverter .

一种BUCK型开关稳压器负载电流检测电路

A Load Current Sensing Circuit for BUCK Switching Regulator

具有内在负载电流反馈的单级并联PFC变换器

Single-switch parallel power factor correction AC-DC converters with inherent load current feedback

基于负载电流检测的并联型APF仿真研究

An Emulation Study of the Parallel APF Based on Load Current Detection

在VS引脚处需要额外的电容来处理负载电流的峰值和电位电机的再生。

Additional capacitance will be required at the VS pins to handle load current peaks and potential motor regeneration .

一种跟踪负载电流变化的LDO频率补偿方法

A Load-Current Tracking Frequency Compensation Method for Low Dropout Voltage Regulators

电源变换器采用降压型Buck结构，并且根据负载电流的大小分别工作在PWM和PFM两种模式以提高转换效率。

The power convertor employs buck structure and can operate in PWM and PFM mode according to the load current level .

进行了滑窗迭代算法的Matlab仿真试验，结果表明该算法能准确计算出负载电流中的基波成分，误差小，实时性强，能满足实际应用需要。

The algorithm is simulated with Matlab , and the results show that it calculates the fundamental component of load current with small errors , which satisfies the practical application .

DSP负责完成人机接口、负载电流的测量、十二路零电流信号的判断、十二路触发时刻的在线计算、D/A输出显示；

DSP was in charge of completing the interface of men and machine , the decision of zero-current , trigger angle computing on line , D / A output display .

仿真结果表明，电压空间矢量脉宽调制SVPWM（SpaceVectorPulsewidthModulation）控制的APF能对负载电流中的谐波和无功分量进行快速精确的补偿。

Simulation results show that , APF controlled by SVPWM ( Space Vector Pulse Width Modulation ) can quickly and precisely compensate the harmonic and reactive components of load current .

与被测负载电流瞬时值成比例的信号ui加到比较器的同相输入端。

The signal u_i , which is in direct proportion to the controled load current instantaneous value , is delivered to the homo-phase input terminal of the comparator .

利用负载电流产生微波的新型MILO

New type MILO using load current to produce microwave

通过对噪声电流In和瞬态负载电流IL复合干扰分析，采取了相应的抑制方法.打靶实验表明，对保证延时信号的完整性是有效的。

Analyzing the composite disturbance of noise current I_n and transient load current I_L , some restrain methods were taken , which ensured the delay signal integrity .

仿真结果表明，APF采用该谐波检测算法可以在一个基波周期内完成对负载电流变化的跟踪并实现谐波检测。

Simulative result shows that , the APF with RDFT algorithm detects the harmonic current and follows its variation in a fundamental period .

文中详细分析了该变换器的SPWM控制策略，并且介绍了一种负载电流前馈电路。

In this paper , it is detailed to analyze the SPWM controlling strategy and introduce a kind of output current feed-forward circuit .

本文所述DVR补偿效果依赖于并联APF的补偿效果及实时运算出的负载电流给定值的速度及精度。

The compensation result depends on the parallel APF , the velocity and precision of the real-time calculated load current setting value .

针对Buck型开关稳压器的不连续工作模式（DCM），提出了一种新颖的负载电流检测电路。

Targeted on the discontinuous current mode ( DCM ) of the Buck switching regulator , a kind of novel load current detection circuit is proposed .

详细分析了品质因数Q对负载电流的影响，并给出了计算公式，利用此方法可以计算出一定Q值下的最小脉冲密度。

In addition , this paper analyzed the effect of quality factor Q to load current in detail and gave a formula , which can calculate the minimum pulse density under a certain Q value .

详细地分析了三相电压型PWM整流器的基本原理及其数学模型，在矢量解耦控制策略基础上引入了负载电流的前馈控制。

Based on the systematic research of the principle and mathematical model of three-phase voltage source PWM rectifier , the load current front-back control was proposed to enhance the performance of the vector decoupling control .

为了避免色差，白光LED调光一般采用PWM方式，但传统的单相PWM调光方式应用在多路LED驱动中时，会存在很大的负载电流变化，从而加大对转换器的要求。

To avoid chromatic aberration , white LED generally uses the dimmer way of PWM . But the traditional method of single phase PWM dimming way will cases big load current variations when used in multi-channel LED driver chips .

可控硅的额定正向平均电流的有效值电压PRV应大于负载电流的有效值；

Virtual value of the frontage average currency of SCR ( PVR ) should be no less than the virtual value of the loading currency ;

为能精确地控制负载电流，把电压源性质的变频器改造成十二相电流源，本文重点设计了电流调节器，并给出了PI分离和智能积分相结合的控制策略。

In order to control the load current accurately , the voltage-character cycloconverter was changed to current-character cycloconverter . The current regulator was designed here and the control strategy of combination of detached PI regulator and intelligent integral .

采用PID控制理论和模糊控制理论，对复合控制系统进行优化，前馈补偿控制器采用模糊决策，以负载电流为输入来跟踪负载变化并对负载扰动做出快速反应。

The compound control system is optimized by the using PID control theory and fuzzy control theory . The feed-forward compensation controller , which takes load current as an input , reacts to the load turbulence quickly with the use of fuzzy decision .

分析了低压差稳压芯片（LDO）的环路频率特性及其与负载电流的关系，提出了跟踪负载电流变化的LDO频率补偿思路和方法，并给出了具体的电路实现。

Based on analysis of the relationship between load current and frequency stability of LDO , a novel LDO structure and its frequency compensation circuit are proposed .

文章在前人并联型APF研究成果的基础上，利用Matlab工具箱，建立了基于负载电流检测的并联型APF仿真模型，并进行了仿真研究，仿真结果证明了该控制策略的有效性。

This article , based on the research results before and using Matlab magazine , has established an emulation model of the parallel APF based on load current detection and did some emulation researches , which is proved feasible .

因此本文采用了自适应谐波电流检测方法，从负载电流中分离出有功电流、无功电流及谐波电流分别作为指令信号送至DVR和APF。

This paper uses adaptive filter to detect harmonic current . This filter can divide fundamental active power current , fundamental reactive current and harmonic current , then send to DVR and APF as setting signal .

负载电流从20mA到180mA变化时，其负载调整率仅为0.6%。

With load current varying from 20 mA to 180 mA , its load regulation is only 0.6 % .