单位功率

DSP控制的单位功率因数弧焊逆变电源

Arc welding inverter with unit power factor based on DSP control

具有快速动态响应的单位功率因数PWM整流器

Study on Unit Power Factor PWM Rectifier with Fast Dynamic Response

基于模型预测控制的单位功率因数电流型PWM整流器

Unity Power Factor Current Source PWM Rectifier Based on Model Predictive Control

单位功率因数PWM整流器双闭环PI调节器设计

Design of Double Closed-loop PI Regulator for Unit Power Factor PWM Rectifier

实验结果表明PET可以实现输入电流的正弦化且单位功率因数的控制。

Experimental results show that PET can achieve sinusoidal current input and unity power factor control .

PWM整流器能够实现单位功率因数、能量双向流动以及稳压输出。

PWM converter can realize unit power factor , energy two-way flow and output voltage .

提出了一种用于PWM单位功率因数整流器的神经网络（NeuralNetwork，NN）控制方法。

A control method based on neural network ( NN ) for PWM rectifier with unity power factor is presented .

仿真结果表明，新型三相整流PFC可以实现单位功率因数。

The simulation results show that unity power factor can be realized .

在仿真过程中，研究了底盘测功机的能量双向流动机制和单位功率因数的PWM变流技术的可行性。

The feasibility of bi-directional energy flow mechanism and PWM converter technology with unit power factor is also discussed .

以三电平PWM整流器为对象，研究了使用非线性PID控制器的单位功率因数整流器的性能。

For three-level rectifier , this paper investigated the performance of the unit power factor rectifier controlled by nonlinear PID controller .

PWM整流技术具有输入电压恒定、能实现单位功率因数运行的特点。

The three-phase of PWM voltage source rectifier owns such features as constant output voltage and running under unit power factor .

三相PWM整流器可以做到输入电流正弦、单位功率因数、直流电压输出稳定，具有良好的动态性能并可实现能量的双向流动。

Three-phase PWM rectifiers have many virtues such as sinusoidal input currents , unity power factor , steady output voltage , good dynamics and bin-directional energy Flow .

介绍了PWM整流器的数学模型，在此模型基础上详细介绍了双闭环控制，即电流内环和电压外环，以实现单位功率因数正弦波电流控制。

Simplified mathematic model of PWM rectifier is introduced . Based on the model , the double closed-loop voltage and current adjustor are was established and expounded .

PWM整流器具有网侧电流正弦性好、能实现单位功率因数运行、能量双向流动和快速的动态响应等特点。

The PWM rectifiers present in this paper have excellent features such as undistorted sinusoidal waveform , unit power factor , bidirectional energy flow and rapid dynamic response .

三相电压型PWM整流系统可实现单位功率因数运行；在三相电网电压频率出现小范围漂移情况下，新型锁相环也能够准确锁相。

Results show that , the proposed PLL follows quickly system frequency change and the three-phase voltage PWM rectifier based on it realizes the operation of unity-power factor .

500W单位功率因数AC-DC变换器分析与设计

Analysis and Design of a 500W AC DC Unity Power Factor Converter

文章采用单位功率因数PWM整流器和斩波电路组成开关电源主体，建立以PWM整流电路为输入电路的新型开关电源。

In this paper , using unity power factor PWM rectifier and chopper circuit , it establishes a new type of switching power supply about PWM input rectifier circuit .

三相电压型PWM整流器具有网侧电流正弦化、可运行于单位功率因数及能量可双向流动等特性，在许多领域取得了广泛的应用。

Three-phase PWM rectifier has been widely used in many fields due to its merits of sinusoidal line current , bidirectional power flow and operation under unity power factor .

单位功率因数控制策略（UPF）；

The Unity Power Factor control strategy ( UPF );

脉宽调制（PWM）技术的引入使整流器输入电流正弦化，可运行于单位功率因数，且谐波含量低。

Pulse Width Modulation ( PWM ) method makes the rectifier have the advantages of sinusoidal input current , unity power factor and low total harmonic distortion ( THD ) .

与二极管不可控整流或相控晶闸管整流器相比，PWM整流器具有网侧电流对称正弦、单位功率因数运行、能量能够双向流动的优点。

Compared with diode uncontrollable rectifier and phased thyristor rectifier , PWM rectifier has the advantage of symmetrical sinusoidal AC current , unity power factor operation and two-way flow of energy .

三相电压型PWM整流器具有输出电压恒定、能实现单位功率因数运行的特点，甚至可以实现电能回馈电网。

The three-phase PWM voltage source rectifier presented in this paper owns such features as constant output voltage , running under unit power factor and feedback of the power into the power networks .

三相电压型可逆PWM整流器因其具有输入电流正弦性好、可以实现单位功率因数以及能量能够双向流动等特性，成为了目前电力电子领域中的研究热点问题之一。

The three-phase voltage source PWM reversible rectifier is becoming interested in power electronics field because it has many excellent characteristics such as undistorted sinusoidal waveform , power factor , and bidirectional energy flow .

提出了一种新型分离式三相PFC（功率因数校正）系统结构，并应用单周期控制技术实现了三相整流器的单位功率因数。

A new circuit of separable three-phase PFC ( power factor correction ) was proposed . One-cycle control strategy was applied to achieve unity power factor in three-phase rectifier .

为了确保并网逆变器的输出电流波形『F弦并满足单位功率因数的要求，需要采用高性能的控制策略。

So , the maximum power tracking precision is improved . ( 2 ) A high-performance control strategy is adopted to ensure that the grid-connected inverter output current waveform is sinusoidal and meet the requirements of unity power factor .

对于PWM整流器而言，绿色的内涵是指电网侧无谐波污染、单位功率因数运行等传统整流装置所不具备的优越性能。

In terms of PWM rectifier in this thesis ," green " means that it has solved the harmonic pollutions and realized the unity power factor . Those superior performance were not equipped with the traditional rectifier .

然后，分析了网侧三相PWM变换器在同步d、q坐标系中的数学模型，同样建立基于稳定直流母线电压和单位功率因数运行的双闭环串级PI控制方案。

Then also through the analysis of math model of three phase PWM converter in d 、 q reference , double closed loop PI control system about stabilization of DC voltage and unit power factor operation could be established .

在三相高功率因数PWM整流器样机上的实验结果证明了控制策略的可行性。以三电平PWM整流器为对象，研究了使用非线性PID控制器的单位功率因数整流器的性能。

The feasibility of the strategy of non dead time was confirmed by experiments of the three phase SPWM rectifier . For three-level rectifier , this paper investigated the performance of the unit power factor rectifier controlled by nonlinear PID controller .

根据三相三开关Boost型功率因数校正交流侧的等效电路，推导出实现单位功率因数所需的控制方程，并用积分复位控制电路进行实现，在理论研究的基础上进行了仿真研究。

According to the AC side equivalent circuit of the three-phase three-switch Boost type power-factor-correction , the equations to realize unity power factor have been deduced and realized by Integrate-Reset-Control circuit . Based on the theory analysis , the simulation is studied .

该方案实现了网侧单位功率因数正弦波电流控制，从而减少了网侧电流谐波，并且能量可双向传输。由于采用了变速PID调节算法，因而使单相PFC获得良好的动态特性。

The approximately sinusoidal current control of the unit power factor on the line side is realized , the harmonic current of the PFC eliminated , bi-directional power flow achieved , and the dynamic performance of the PFC improved .