单位功率
- unit power
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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
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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
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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
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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
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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 .
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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 .
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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 .
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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 .
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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 .
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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 .
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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 .
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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 .
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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 .
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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 .
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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 .
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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
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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 .
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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 .
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单位功率因数控制策略(UPF);
The Unity Power Factor control strategy ( UPF );
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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 ) .
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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 .
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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 .
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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 .
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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 .
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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 .
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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 .
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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 .
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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 .
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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 .
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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 .