实行电动机无功就地补偿，对改变电动机低功率因数运行、减少线路损耗、提高变压器带载能力，有明显效果。
It has evident effect on low power factor working of motor, decreasing line loss and improving load ability of transformer.
晶闸管串级调速系统是一种廉价、简易的调速系统，但是传统串调系统存在着诸如功率因数低、谐波污染严重等弊端。
Speed regulation system using cascade control method with thyristor is a low-cost system, but the classic system has some shortages, such as low power factor, serious harmonic pollution and etc.
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.
在低功率应用中，为了减少器件和成本，单级功率因数校正(PFC)技术越来越受到人们的关注。
To reduce the component counts and the cost, the single-stage power factor correction (PFC) techniques have attracted more and more attention.
晶闸管串级调速系统是一种廉价、简易的调速系统，但是传统串调系统存在着诸如功率因数低、谐波污染严重等弊端。
Thyristor cascade control system is a low-cost system, but the traditional cascade control system has some shortages, such as a low power factor, serious harmonic pollution etc.
传统的高压钠灯配备的是电感式镇流器，其体积大，本身功耗大、功率因数低、调光困难等。
Traditional ballast components of inductance ballast has some disadvantages which include large volume, high self consumption, low power factor and difficult to adjust.
针对电气化铁路变电所功率因数低，不能满足剧烈变化的牵引负荷对无功补偿要求的现状。
The power factor for the railway substation of the electrified railway is low and can not meet the conditions of severe tractive load to reactive compensation requirements.
本文给出了一种可用于功率因数校正的新型低通态损耗电路。
A novel low conduction loss circuit that can be used for power factor correction is presented in this paper.
由于感性负荷的比例大，造成供电电网的功率因数低，损耗大。
Because of inductance loading is larger, the power factors of electrified wire netting are lower and the loss is higher.
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.
针对抽油机电驱动装置效率和功率因数低、耗能严重的问题，研制了一台新型的抽油机节能控制系统。
The saving energy control system is proposed for problem of oil drawing machine electric driver which efficiency and power factor is low.
该方案能在80 ~ 265V宽输入电压范围内得到稳定直流电压输出，具有效率高、总谐波畸变率低、功率因数接近为1等特点。
It can achieve a fixed output of DC voltage in the universal input range of ac 80 ~ 265 V. It owns the advantages of high efficiency, low total harmonic distortion, PF near to 1.
本文设计出一款高功率因数、高效率、低性能-价格比的开关电源，为32寸LCD电视作稳压电源用。
This paper attempts to design a novel switching power supply with high power factor, high efficiency and low cost performance, to providing the power supply to LCD TV of 32 inch.
通过主回路、引弧电路、稳弧电路的共同作用，解决了一般弧焊电源输出脉动大、功率因数低的缺点。
The problem of annual arc welding power source whose output is surge and power factor is lower, is solved by means of main circuit, arc ignition circuit and arc static circuit working together.
无源功率因数校正技术具有简单及成本低的优点，在小功率应用场合具有广阔的前景。
Passive solutions are very attractive topologies for low power applications, due to the theirs simplicity and low cost.
感性负载功率因数越低，铁芯变压器的外特性越下降吗?。
The Lower the External Characteristic of the Iron-core Transformer, the Lower the Power Factor of the Inductive Load?
现在国内外正在开发研究单级功率因数校正电路，具有很高的功率因数，且成本低。
Recently, internal and overseas investigators are developing single-stage PFC circuit, which has higher PF and lower price.
实验结果表明该电路方案简单、成本低、输入功率因数高，适用于中小功率，具有良好的应用前景。
The experiment results show its simplicity and low cost as well as good prospects of application.
PWM整流器具有单位功率因数，谐波含量低，能量可逆传送等特点。
The PWM rectifier with unity power factor, harmonic content of the low energy features such as reversible transmission was introduced.
配电网中许多负荷功率因数低、波动大、变化快，传统的无功功率补偿装置很难起到理想的补偿效果。
Many load in distribution network has low power factor, fluctuates greatly, and changes fleetly. It is hard to achieve perfect compensation by traditional compensator.
变压器的空载试验中，由于功率因数低，空载电流不是正弦信号，高精度测量其有功功率具有一定的难度。
In the no-load test of transformer, because of the low power factor and non-sinusoid current waveform, the high precision measurement is difficult.
内部的功率因数校正（PFC）电路以临界导通模式（CCM）工作，可获得高功率因数、低总谐波失真（THD）及直流电压调整。
PFC circuitry operates in critical conduction mode(CCM)and provides for high PF, low THD and DC bus regulation.
电机长期工作在低负荷时的效率和功率因数均较低，降低了空调机组的性能系数COP，增加了空调机组的能耗。
The property coefficient COP of air conditioner system reduced and its consumption increased when the electrical motor operated at lower load.
这种镇流器在没有功率因数调节器的情况下能产生高功率因数和低谐波率。
Under condition of no power factor regulator, it can generate high power factor and low harmonic rate.
本文研制一个具有高功率因数、高效率、低谐波且可操作于高频之零电压切换升压型功因修正器。
This paper presents the design and implementation of a zero-voltage-transition power factor correction (PFC) converter having high power factor, high efficiency, and low harmonic line current.
最大功率因数？是整数，1.0……一典型的桶焊机操作的功率因数可达到0.2这样低。
The highest power factor is unity, 1.0...? A typical drum welder can operate at a power factor as low as 0.2.
最大功率因数？是整数，1.0……一典型的桶焊机操作的功率因数可达到0.2这样低。
The highest power factor is unity, 1.0...? A typical drum welder can operate at a power factor as low as 0.2.
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