The paper presents a kind of zero-voltage soft-switching unity power factor converter.
提出了一种零电压软开关高功率因数变换器电路。
The relationship between the unity power factor and the voltage balance of the capacitor was discussed.
主要讨论了单位功率因数实现和电容电压平衡问题及其关系。
A new type of switching power supply realize of the unity power factor from the network access point adjacent.
新型开关电源从网侧接入点获得单位功率因数。
The principle of charge pump for achieving power factor correction (PFC) and its unity power factor condition are analyzed.
分析了电荷泵电路实现功率因数校正（PFC）的基本原理和条件；
The PWM rectifier with unity power factor, harmonic content of the low energy features such as reversible transmission was introduced.
PWM整流器具有单位功率因数，谐波含量低，能量可逆传送等特点。
The concept of unity power factor can also be applied to the control of series active power filter. And the control method is provided.
本文还将单位功率因数的概念引入串联型有源电力滤波器的控制中，提出了串联型有源电力滤波器的控制技术。
The simulation result shows that the DSP controller has very fast dynamic response and unity power factor, flexible control and simplified hardware design.
仿真结果表明，DSP控制器可以获得较高的功率因数，且具有快速的电路动态响应、灵活的控制方法以及简洁的硬件设计等特点。
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.
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。
This paper improved the harmonic current detection method based on UPF (unity power factor), using the slipped window integral to replace the LPF (low pass filter).
本文对基于单位功率因数的谐波电流检测方法进行了改进，用移动窗积分法取代检测中常用的低通滤波器。
Based on the unity power factor control strategy of single-phase active power filter, remove the part of non-linear load is the single-phase full-controlled rectifier.
基于单位功率因数控制策略的单相有源滤波，去掉非线性负载部分即为单相全控整流。
The paper analyzes the vector control theory for doubly fed induction generator, Maximal Power Point Track (MPPT) and control strategy for the unity power factor of stator output.
阐述了双馈发电机的矢量控制原理及其相应的最大功率点跟踪和发电机定子侧输出单位功率因数的控制策略。
The device for battery charge or discharge based on the technology of bidirectional converter can be used in charging or discharging battery, and realize sine wave of ac and unity power factor.
基于双向变流器技术的蓄电池充放电装置具有充电和放电功能，同时实现了网侧电流正弦化及单位功率因数，因而减少了对电网的谐波和无功污染。
The method of instantaneous value comparison for source current control of unity power factor rectifier possesses advantages of simplicity as well as valid restriction for maximum switching frequency.
在单位功率因数整流器中，利用瞬时值比较法来控制电源电流，不但控制简单，还可有效限制器件的最高开关频率。
The current response speed is proved to be faster, and the grid-connected current waveform is sine and the power factor is unity.
获得了较快的电流响应速度，实现了并网电流的正弦化和单位功率因数。
The highest power factor is unity, 1.0...? A typical drum welder can operate at a power factor as low as 0.2.
最大功率因数？是整数，1.0……一典型的桶焊机操作的功率因数可达到0.2这样低。
The PWM rectifier is a "green" power electronics equipment since it offers sinusoidal input currents, unity or adjustable power factor, reversal of power flow.
PWM整流器可实现正弦的网侧电流、单位或可调的功率因数、能量的双向流动，是一种真正意义上的“绿色环保”电力电子装置。
The PWM rectifier is a "green" power electronics equipment since it offers sinusoidal input currents, unity or adjustable power factor, reversal of power flow.
PWM整流器可实现正弦的网侧电流、单位或可调的功率因数、能量的双向流动，是一种真正意义上的“绿色环保”电力电子装置。
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