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 motor has characteristics of placid rotation, high power factor and low noise.
该电动机具有转动平稳、功率因数高、噪声低等特点。
Static var generators are used to improve voltage regulation, stability, and power factor in ac transmission and distribution systems.
静止无功发生器可提高交流输电系统和配电系统的电压调节能力、系统稳定性和功率因数。
Consequently, the additional harmonic loss of rectifier transformer is reduced, the power factor is enhanced and the power quality is improved.
同时整流变压器的附加谐波损耗得到了有效降低，功率因数得到提高，改善了系统的电能质量。
The development of permanent magnet electrical machinery with high efficiency and high power factor supply new ways for water pump saving energy.
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。
Automatic compensation load reactive power, enhancing the load power factor.
自动补偿负荷无功功率，提高负荷功率因数。
Introduced the principles of pulse modulating circuit for measuring power factor.
介绍了一种脉宽调制型功率因数测量电路的工作原理。
How to consider harmonic suppression and power factor compensation comprehensively?
谐波治理及功率因素补偿如何综合考虑？
One of the key factors of affecting power factor of rectifiers is control technique.
控制技术是影响整流器功率因数的关键因素之一。
It is pointed out that the power factor requirement for users is too low and should be raised.
文中认为，目前对电力用户功率因数的要求偏低，建议提高。
The paper introduces the automatic compensation device of high voltage network's power factor.
介绍一种自行研制的高压电网功率因数自动补偿装置。
The relationship between the unity power factor and the voltage balance of the capacitor was discussed.
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。
This device is superior to those energy-saving devices controlled by power factor of by load and speed.
本装置优越于按功率因数控制的或按负荷及速度控制的节能装置。
A new approach to enhance the power factor of two or more the same inductive loads in parallel is presented.
给出了一种用串联电容来提高两组或多组相同感性负载并联电路功率因数的方法。
A new and practical power factor control strategy for three phase PWM current source rectifier was proposed.
提出了三相电流型PWM整流器的一种新型实用的功率因数控制方法。
The experiment results indicate the system has the characteristics of high power factor and low harmonic current.
实验结果表明，该系统具有输出功率因数高，对电网谐波污染小等优点。
A proposal using passive power factor correction method to reduce harmonics emission is introduced in this paper.
介绍了一种采用无源功率因数校正方法降低电源谐波含量的方案。
The DRM has been used for justification of increasing core power factor in Daya Bay NPS18-month fuel cycle project.
该方法已在大亚湾核电站18个月换料项目的提高堆芯功率因子的分析论证中应用。
High power factor, high efficiency, low noise, is the character that power supply and electronic equipment pursuing.
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。
Not only high power factor synchronous motor, and its speed is independent of the load, depends only on grid frequency.
同步电动机不但功率因数高，而且其转速与负载大小无关，只决定于电网频率。
Apply150% rated load at rated power factor and measure the time required for the inverter protective devices to operate.
在额定功率因素上施加150%额定负荷，并测量逆变器保护装置启动所需时间。
For measuring the electric performance parameters of light sources, measuring the voltage, current, power and power factor.
用于测量光源的电性能参数，测量电压、电流、功率、功率因数。
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.
这时投切电容予以补偿，改善功率因数，达到节能的目的。
Novel circuit structure and topologies family of uninterruptible AC switching power supplies with high power factor are proposed.
提出了一类新颖的不间断高功率因数交流开关电源电路结构与拓扑族。
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。
The DC bus voltage and the power factor of the PWM rectifier are regulated by three nonlinear PI controllers with high performance.
采用双环结构，用三个非线性PI环节实现了对整流器直流电压与功率因数的高性能控制。
The experiment results show input power factor, distortion factor, crest factor, total harmonic distortion and harmonic components.
给出了输入功率因数、畸变因子、峰值系数、总谐波畸变率和谐波分量的实验结果。
Grid voltage in accordance with corporate standards and requirements for power factor to determine the motor's voltage rating and type.
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。
By analyzing the conventional power factor measurement methods, a new measurement method of power factor based on DSP technology is proposed.
在分析与总结了传统功率因数测量方法的基础上，提出了基于数字信号处理(dsp)技术的功率因数测量方法。
The power factor correction (PFC) and half-bridge inverter circuit topology are commonly used in modern high power factor electronic ballasts.
现代高功率因数电子镇流器结构中普遍采用功率因数校正（PFC）和半桥逆变谐振电路拓扑。
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