控制系统具有功率因数自适应功能；
The control system possesses power factor self-adapting function;
在不同运行状态时功率因数如何变化？
How about the power factors in different running conditions?
本文论述了提高功率因数的重要作用。
This article shows the important function of improving power factor.
它可以实现单位功率因数和低电流畸变。
It can achieve unity power factor and low current distortion.
功率因数自动调节功能。
提高功率因数是提高电能利用率的主要手段。
Increasing power factor is main measure for increasing the utilization factor of power.
功率因数是输配电系统的一项重要的经济指标。
Power Factor is an important economic indicator in transmission and distribution power system.
最后概括了有源功率因数校正技术的发展趋势。
At the end of the article, it summarizes the trends of active PFC technology.
充油套管应带有用于进行功率因数试验的接插头。
Oil filled bushing should have plugs for test of power factor.
③输入侧的功率因数在一定的范围内可以控制。
The input power factor can be arbitrarily controlled within a certain control range.
阻性负载，功率因数为1 。采用特制合金电阻。
响应速度以us计，功率因数高，特别节能、环保。
Response speed in milliseconds, the power factor is high, especially energy-saving and environmental protection.
变换器的输入功率因数较高，基本在0.99 左右。
功率因数校正(PFC)是电源设计中的关键内容之一。
该文论述了负载电流为非正弦波时功率因数测量的新方法。
This paper presents a new method for measuring the power factor in nonsinusoidal load current.
提出了一种新的高功率因数变流器在矿井提升机中的应用。
The paper discusses a new high power factor converter applied in mine hoist.
晶闸管变流装置的应用，使电力系统的自然功率因数下降。
Because of application of rectifier set, the natural power factors were decreased.
本文讨论了脉宽调制(PWM)逆变式弧焊电源的功率因数。
The power factor of PWM are welding power source has been discussed in this paper.
目前排水泵站系统普遍存在功率因数低、无功损耗大的情况。
Now there is lower powe factor and larger reactive power loss in the drain system.
在模糊控制PID方法基础上，实现了恒定功率因数节能控制。
Based on fuzzy control PID, energy saving method of constant power factor is achieved.
电机的恒功率因数控制是一种简单、有效的能量最优控制方法。
The constant power factor control is a simple and effective energy optimized control strategy.
整个运行范围内，效率高、比功率大、功率因数高、可靠性高。
Within the entire operating range, high efficiency, specific power, and high power factor, high reliability.
介绍了整流装置的功率因数的特点，分析了导通角的控制方法。
The Method of Group-Control for Electronic Ballasting of the High Power Factor;
因此，提高电力系统的功率因数，已成为电力工业中一个重要课题。
Therefore, improvement of power system power factor, the power industry has become an important issue.
主要介绍了有源功率因数校正（APFC）的工作原理、电路分类。
Principle and class of active power factor correction(APFC) are introduced.
当选用汞灯、钠灯光源时，可按用户要求将功率因数提高到90%。
Power factor of sodium lamp and mercury lamp can be improved 90%.
更正系数是补退电费的重要依据，但更正系数中的功率因数角也是未知数。
Correction coefficient is important to electric charge refund, but its power factor Angle is unknown.
更正系数是补退电费的重要依据，但更正系数中的功率因数角也是未知数。
Correction coefficient is important to electric charge refund, but its power factor Angle is unknown.
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