功率因数

提高变压器功率因数的可行性研究

The Study on the Feasibility of Improving the Cos φ of Transformers

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

特别对单相Boost型功率因数校正电路的集成进行了概述。

The integration of single-phase Boost PFC converters is particularly overviewed .

基于BOOST电路功率因数预调节器的设计

Design of Power Factor Pre Regulator Based on BOOST Circuit

一种关于单相Boost功率因数校正器数字控制的改进算法

An Improved Algorithm for DSP Implementation of Boost PFC Converter

高效率的BOOST型功率因数校正预调节器

A high efficient boost converter with power factor correction

PWM整流器高功率因数的实现

The Realization of the PWM Rectifier with High Power Factor

间接电流控制可调功率因数电流型PWM变流器

Indirect Current Control Adjustable Power Factor Current Source PWM Converter

三相PWM高功率因数整流器控制技术综述

Overview on the Control Technology of the 3-Phase PWM High Factor Rectifier

单相Boost功率因数校正电路输入阻抗特性研究

Input Impedance Study of Single-phase Boost PFC Converters

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

有源功率因数校正（ActivePowerFactorCorrection，APFC）技术的优点是总谐波含量小，功率因数高。

Active power factor correction ( APFC ) technology can achieve high power factor and low total harmonic distortion ( THD ) .

对平均电流型功率因数校正电路原理进行分析，并就以BOOST型拓补构成该型电路实现的几个关键技术做出说明。

Analysis the average current model PFC , and talk about some problem of electric circuits realizes of BOOST model .

利用S，P，Q和N构成功率四边形，由S，P和Q计算非正弦交流电路的基波功率因数cos（？）

If S , P and Q are known , using the power quadrangle can compute the fundamental harmonic power factor cos (?)

功率因数校正（PFC）技术是目前电力电子研究的热点之一。

PFC is the hot point today in the electric electronic research .

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 .

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 .

基于改进SVPWM方法的三相功率因数校正变换器的仿真分析

Analysis and Simulation of Three Phase Power Factor Correction Converter Based on Improved SVPWM Method

恒定功率因数节能方法在VVVF变频调速器中的应用

Energy-saving Method of Constant Power Factor for a VVVF Inverter

带有功率因数校正的电荷控制型Flyback变换器的分析与设计

Analysis and Design of Flyback PFC with Charge Control

基于BCD工艺的优化THD有源功率因数校正控制器设计

Design of APFC Controller with THD Optimizer Circuit Based on BCD Process

文中分析了基于IVC控制的整流器电路工作原理，理论表明该电路具有电路结构简单、控制性能好、功率因数为1的优点。

The features are simple implementation , excellent control performance and unity power factor .

一种新型有源功率因数校正器（APFC）的研制

Development of a Novel Converter with Active Power Factor Correction

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 .

一种新型的ZVS单级功率因数校正变换器

A Novel ZVS Single-Stage PFC Converter

在功率因数校正变换器中采用软开关变换技术可以使开关频率提高、降低开关损耗、并有效抑制EMI。

For increasing the switching frequency and reducing switching losses and EMI noise of the PFC circuits , soft-switching technologies are adopted .

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

单位功率因数控制策略（UPF）；

The Unity Power Factor control strategy ( UPF );

Totem-PoleBoost功率因数校正电路由于省略了整流桥，理论上可获得更高的效率。

Totem - Pole Boost with no rectifier bridge can get better performance in theory .

重点分析了平均电流控制的CCM电路工作原理，对其功率因数校正过程作了详细的分析。

The operating principle of CCM circuit controlled by the average current and the correction procedure are analyzed in detail .