high power factor

Study on Current Waveform Control of High Power Factor Rectifier Circuit

高功率因数整流电路电流波形控制的研究

Research on single-stage uninterruptible DC switching power supplies with high power factor

单级不间断高功率因数直流开关电源研究

this paper analyzes the principle of buck converter in discontinuous conduction mode ( dcm) using for pfc and derives the boundary inductance that maintains high power factor.

分析了BUCK变换器工作在不连续导通模式（DCM）时实现PFC的机理；推导出了保证高功率因子的临界电感值。

For example, switching power supply circuit that is an important indicator is the high power factor hard to reach this target, in the power circuit design is necessary to choose a variety of electronic switch components, to the power of transformation.

例如开关电源电路，该电路的一个重要硬性指标就是高功率因数，为了达到这一指标，在电源电路的设计中就要选择各种电子开关元器件，来进行电能的变换。

High power factor 220 V/ 10 A power system operating switch mode rectifier

高功率因数220V/10A电力系统直流操作开关电源

High Power Factor Dimmable Electronic Ballast for Fluorescent Lamp

高功率因数可调光荧光灯电子镇流器

A DCM Single-Stage High Power Factor Converter Based on Asymmetrical Half-Bridge Circuit

一种单级DCM高功率因数非平衡半桥变换器

The AC/ DC block is controlled as a high power factor three-phase PWM rectifier thus reduced harmonic distorts to the net and the slip energy can flow bidirectional freely.

AC/DC采用三相PWM高频整流矢量控制，实现高功率因数下转差能量双向流动，效率高、减少对电网污染。

Design of A New High Power Factor Electronic Load Adjustment

新型高功率因数电子负荷调节器的设计

Study on fluorescent lamp ballast circuit with high power factor

高功率因数日光灯镇流器电路研究

high power factor at ac input can be achieved by controlling the switch of capacitor charge circuit.

通过对电容器充电回路开关管进行控制，实现交流输入端的高功率因数。

the engineer installed a high power factor transformer in the factory.

工程师在工厂里安装了一台高功率因数变压器。

Low harmonics, high power factor, and the ballast with.

低谐波 、 高功率因数 、 带有滤波器件的整流器.

research on high power factor electronic ballast for hps and lps

高功率因数高低压钠灯电子镇流器的研制

because of its advantages of small input current distortion and high efficiency, boost converter is usually used in the pre-regulator of two-stage pfc, to realize high power factor.

Boost变换器具有输入电流畸变小、效率高等优点，通常被用在两级PFC的前级以实现高功率因数。

The Realization of the PWM Rectifier with High Power Factor

PWM整流器高功率因数的实现

APFC technology is widely used for its wide input range, small size, little weight and high power factor.

而其中的APFC技术以其输入电压范围宽、体积小、重量轻、功率因数高等优势，得到了尤其广泛的应用。

A Novel High Power Factor Switching Converter with Single Stage Structure

一种单级的高功率因数开关变换器

It adopts bidirectional switch and on time rectification, and obtains high power factor, high efficiency and low THD.

它采用双向开关和同期整流，得到了高功率因子、高效率和低高次谐波。

A considerable part of the high-power electrical and electronic equipment is used in the gird now. So the development of three-phase rectifier with high power factor is a hot topic of research in the world.

在现在使用的电网中，相当一部分是中大功率的电力电子设备，因此，现在世界上研究的一大热点就是研制具有高功率因数的三相整流器。

Achieve to Using DSP control high power factor PWM rectifier

用DSP实现高功率因数PWM整流器的控制

At present, the research of the single-stage power factor correction ( PFC) circuits is mostly concentrated on the application of low powers. A zero-current-switching ( ZCS) single-stage AC/ DC converter with high power factor is proposed to use in medium and high power conditions.

目前，对单级功率因素校正电路的研究大多集中在小功率应用领域，为此该文提出一种能够应用于中大功率场合、实现了零电流开关的单级高功率因数AC/DC变换器拓扑。

Study of High Power Factor Rectifiers with Series-Connected Dual Boost Topology based on One Cycle Control

单周期控制串联双Boost高功率因数整流器研究

simulation results show that high power factor and good output voltage is obtained by control of ept and the excitation generator.

从仿真结果中可以看出，通过对发电机励磁和EPT的控制，可以获得较高的功率因数，并且有良好的输出电压。

Three-Phase Three-Switch High Power Factor Rectifier With One Cycle Control

单周控制的三相三开关高功率因数整流器

Automatic Timing Control Algorithm for High Power Factor Reversible Converter

高效可逆变流器的自动定时控制算法

It Consists of bidirectional switch and zero current switching control technique to achieve on time rectification in the primary circuit. High power factor, high efficency and low THD have been obtained.

电路采用零电流转换方式进行控制，并采用双向开关实现了电路初级的同期整流，从而实现了高功率因子、高效率和低高次谐波的功率因子改善电路。

This paper introduces a kind of nonlinear-carrier ( NLC) controller for high power factor boost converters. Using the NLC controller, input line voltage and current sensing, error amplifier in the current shaping loop, and analog multiplier/ divider are eliminated.

阐述了一种非线性载波（Nonlinear-carrier）控制的PFC电路，该电路与传统单级功率因数校正电路相比不再需要输入电压、电流采样以及复杂的模拟乘法器和电流误差放大器电路。

High power factor stabilized voltage supply is a kind of high performance alternating current power supply which can not only steady the output voltage but also enhance the input power factor.

高功率因数稳压电源是一种既能起到稳压作用又可以提高电源输入端功率因数的高性能交流电源。

test results demonstrate that the ac switch power supply has some advantages, such as simple topology, high power density, uninterruptible power supply, high power factor, fast dynamical response, strong sustaining ability under over-load and short-circuit, and small thd of output voltage.

试验结果表明，这类交流开关电源具有拓扑简洁、功率密度高、不间断供电、功率因数高、动态响应快、过载和短路能力强、输出波形THD小等优点。