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.
用数字电路实现功率和功率因数的计算。
It USES digital circuit to realize the calculation of the power factor.
自动补偿负荷无功功率，提高负荷功率因数。
Automatic compensation load reactive power, enhancing the load power factor.
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.
控制技术是影响整流器功率因数的关键因素之一。
One of the key factors of affecting power factor of rectifiers is control technique.
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.
可实现电机输入电源功率因数的改善，减轻其容量。
It can obtain the improve of power factor of the input motor power, and can lighten its capacity.
这使得功率因数校正技术成为电力电子研究的热点之一。
As a result of it, PFC has become one of the study focuses in power electronics.
功率因数校正(PFC)是电源设计中的关键内容之一。
这时投切电容予以补偿，改善功率因数，达到节能的目的。
Then the capacitance is put in or taken out to compensate, so as to improve the power factor, and reach the aim of energy—saving.
文中认为，目前对电力用户功率因数的要求偏低，建议提高。
It is pointed out that the power factor requirement for users is too low and should be raised.
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。
The relationship between the unity power factor and the voltage balance of the capacitor was discussed.
高效、高功率因数的稀土永磁电机为水泵节能开辟了新途径。
The development of permanent magnet electrical machinery with high efficiency and high power factor supply new ways for water pump saving energy.
介绍用于无源和有源功率因数校正中电感材料的特性和选择。
The characteristic and selection of inductance material for use in PPFC and APFC are introduced.
高功率因数、高效率、低噪音是电源装置和用电设备普遍追求的品质。
High power factor, high efficiency, low noise, is the character that power supply and electronic equipment pursuing.
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。
High power factor at ac input can be achieved by controlling the switch of capacitor charge circuit.
本文论述了可控硅逆变器逆变角影响串级调速装置功率因数的基本原理。
This paper discusses the basic principle which the inverted firing angle of thyristor inverter has the influence on power factor of a cascade connected device.
稀土永磁同步电动机具有效率高、功率因数高的特点，是一种高效节能产品。
High efficiency and high power factor are characteristic of rare earth and permanent magnetism and synchronous motor. lt is a energy saving product.
本文概述了8K机车功率因数补偿装置的工作原理、参数选择及投切控制。
Operating principle of power factor compensating device for 8k electric locomotive is briefly described as well as its parameter selection, switching on and off control.
根据企业的电网电压标准和对功率因数的要求，确定电动机的电压等级和类型。
Grid voltage in accordance with corporate standards and requirements for power factor to determine the motor's voltage rating and type.
它使用方便、运行可靠、价格低廉、结构牢固，但功率因数较低，调速也较困难。
It is easy to use, reliable, inexpensive, solid structure, but the lower power factor, speed is also more difficult.
对已建成的功率因数偏低的泵站采用电力电容补偿，可减少电源和线路的电流负荷。
If we compensate the pump station with lower power Numbers for electric power and electric capacity we can reduce the current load in the power source and the lines.
介绍了提高电动机和变压器功率因数的具体措施，并对功率因数补偿问题进行了分析。
In this paper, the measures of raising power factor for motor and transformer are introduced and the problem of compensation of power factor is analysed.
并联电容器组的基本目的是要提高当地线路的电压，或提高引线路所带负荷的功率因数。
The basic purpose of a shunt capacitor bank is to increase the local circuit voltage and or reprove the load power factor carried by the circuit.
通过计算，得到了未投入功率因数补偿装置时6K机车功率因数和谐波电流的分布规律。
Calculation results uncover the distribution order of power factor and harmonic current for 6k locomotive with the power factor compensator switched off.
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。
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。
As the heart of the power factor correction circuit, the gain modulator gets a high power factor by controlling the input current.
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