Correction: Natural gas found in Queensland's coal seams should be able to power a city of 1m people for 5, 000 years, not 1, 000 years as we first stated.
更正：昆士兰天然气探测量应该是足够满足100万人口城市提供5000年能耗，而不是我们开始所写的1000年。
Correction: Natural gas found in Queensland's coal seams should be able to power a city of 1m people for 5, 000 years, not 1, 000 years as we first stated. This was corrected on June 9th 2011.
更正：在昆士兰煤层发现的天然气能够支撑一个拥有一百万人口的城市五千年的使用量，而不是之前所说的一千年。
Among the three-phase power-factor correction circuits, the full decoupling circuit is especially suitable for high power fields because of its high input power and good electrical performance.
在三相功率因数校正电路中，全解耦型电路由于其输入功率大，电气性能较好等优势特别适用于大功率场合。
As the heart of the power factor correction circuit, the gain modulator gets a high power factor by controlling the input current.
增益调制器作为功率因数校正电路的核心电路，通过控制输入电流来得到一个高的功率因数。
Theoretical analysis shows that the CUK circuit has inherently the features of power factor correction and soft turn off switching.
理论分析得出了CUK电路具有固有的功率因数校正和软关断开关特性。
The principle of active power factor correction circuit operated in critical inductor current mode is analyzed in this paper in detail.
文中详细分析了电感电流准连续模式的有源功率因数预校正电路的工作原理。
As an effective way of eliminating high frequency harmonic, active Power Factor Correction (PFC) technology has been deeply researched and has broad application.
有源功率因数校正技术(PFC)作为一种有效的谐波抑制方法，得到了广泛而深入地研究与应用。
Principle and class of active power factor correction(APFC) are introduced.
主要介绍了有源功率因数校正（APFC）的工作原理、电路分类。
Experiment results showed that the correction device of power factor could realize high power factor, low harmonic distortion and low ripple of output voltage.
通过实验结果表明，单级功率因数校正装置可以实现较高的功率因数、较低的总谐波畸变，而且输出电压纹波小。
So Reverse Power control, include open-loop power adjust and closed- loop power correction, is the focus of our study.
功率控制主要指的是反向功率控制，包括开环功率估计和闭环功率校正。
The model setting up method of the three module which include power factor correction circuit, two-transistor forward converter, secondly chopper circuit, is discussed in detail.
分别讨论了功率因数校正模块、双正激变换电路模块和二次斩波模块的建模方法。
This paper discusses the principle of power factor correction (PFC) and describes the realization of a PFC rectifier.
本文介绍功率因数校正(PFC)原理，以及一个PF C整流器的实现。
Overcomed a certain number of defects on indicated power correction recommended by ISO and GB1105-74, increasing accuracy on the correction.
克服了ISO和GB1105—74等指示功率修正方法中存在的若干缺陷，提高了修正计算精度。
To enhance the performance of UPQC, active power factor correction (APFC) technology is introduced into the DC energy storage unit of UPQC for capacitive voltage control.
为了进一步提高UPQC的性能，将有源功率因数校正(APFC)技术引入UPQC直流储能单元的直流电容电压控制，详细阐述了其工作原理，并给出了仿真实验结果。
Active Power Factor Correction to meet EMC limits for harmonic current emissions, and limitations of voltage fluctuations and flicker.
有源功率因数校正满足EMC的谐波电流的排放限制，以及满足电压波动和闪变的限制。
The simulation result proves: Used this converter's topology structure, the envelope curve of import electric current follows entering voltage change. And power factor correction has been realized.
仿真分析结果证明：该变换器拓扑结构能够使输入电流的包络随着收入电压变化，有效的实现了功率因数校正。
The working principle and characteristic of the Boost power factor correction (PFC) circuit operating in critical conduction mode are investigated.
介绍了临界模式功率因数校正电路的工作原理和特点。
Such errors can be reduced with a quantitative correction method designed for precise measurements of the electrical power.
为了减小该误差，提出一种定量修正方法，以实现电功率的精密测量。
Power factor correction technology is an effective method of restraining harmonic currents and increasing power factor, which has been attended more and more in recent years.
功率因数校正技术是抑制谐波电流、提高功率因数的行之有效的方法，近年来受到了越来越多的关注。
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；
In this dissertation, the detection, identification and correction of the bad or wrong data in the power system were investigated thoroughly.
本文对电力系统中的不良和错误数据的检测辨识与修正进行了深入研究。
Improved MPC was proposed and applied to power factor correction system of current source converter (CSC).
改进的MPC，提出并施加到功率因数校正系统的电流源转换器(CSC)。
Zero current transition (ZCT) topology of the single switch three phase boost power factor correction (PFC) rectifier is proposed.
提出了一种零电流开关结构的单开关管的三相升压功率因数校正整流器。
The Power Factor of electronic devices is a main index to judging their performance, while Active Power Factor Correction (APFC) is a radical and effective approach to improve Power Factor.
用电设备的功率因数是衡量其性能的一项重要指标，而提高功率因数的最根本和有效的途径就是采用有源功率因数校正技术。
In this paper, the methods of power factor correction are discussed, and the principal of boost active power factor correction circuit operated in critical inductor current mode is analyzed in detail.
本文讨论了功率因数校正的方法，分析了电感电流工作于临界模式的升压式有源功率因数校正电路的原理。
Heat evolution correction method for node of the saturated steam network was put forward, which can be used for simulation for large-scale steam network of nuclear power plant.
针对单相可压缩流体网络模型提出了饱和蒸汽网络节点散热修正方法，可以用于核电站等大型蒸汽管网的仿真计算。
He or she will also determine the power of any lens correction needed to provide clear vision.
它们也会判断出你看清事物所需的矫正镜片的屈光度数。
Firstly this paper introduces the principles and methods of power factor correction technology, and single-stage power factor correction techniques are analyzed and compared.
本文首先介绍了功率因数校正技术的基本原理和基本方法，对单级功率因数校正技术的现状进行了分析和对比。
Firstly this paper introduces the principles and methods of power factor correction technology, and single-stage power factor correction techniques are analyzed and compared.
本文首先介绍了功率因数校正技术的基本原理和基本方法，对单级功率因数校正技术的现状进行了分析和对比。
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