英语释义

1. the ratio of the mean actual power in an alternating-current circuit measured in watts to the apparent power measured in volt-amperes, being equal to the cosine of the phase difference between electromotive force and current

片语

local power peaking factor当地功率峰值因子

power-factor compensator功率因数补偿器

power-factor measurement功率因数测量

power correction factor功率校正系数

power coefficient动力系数；[电][核] 功率系数；力系数

power r factor adjustment功率因数蝶

power prediction factor功率预估因数

power-factor compensation功率系数的补偿

power-factor meter功率因数表

英汉例句

• 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 ac/dc block is controlled as a high power factor three-phase pwm rectifier thus reduced harmonic distorts to the net and the slip energy can flow bidirectional freely.

  dc采用三相pwm高频整流矢量控制，实现高功率因数下转差能量双向流动，效率高、减少对电网污染。

• the simulation result shows that the dsp controller has very fast dynamic response and unity power factor , flexible control and simplified hardware design.

  仿真结果表明，dsp控制器可以获得较高的功率因数，且具有快速的电路动态响应、灵活的控制方法以及简洁的硬件设计等特点。

• 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？

• according to this relationship, vector control system with energy-saving based on constant power factor was formed.

  通过此关系，设计了基于恒功率因数的节能型异步电动机矢量控制系统。

• the paper analyses the principle of the phase equilibrium of the unsymmetric load and the power factor correction installation in theory .

  分析了不对称负荷相平衡及功率因数补偿装置的基本原理，介绍了补偿装置的构成及实现方法。

• on the basis of this principle, if it adopts a pwm type of cascade connected device, the power factor is improved to a certain extent.

  从而阐明了当采用pwm型串级调速装置时，它的功率因数可得到一定程度的改善。

• 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。

• the effect on the generator excitation magnetic field is different when the capacity and power factor of load are different, and the effect on the internal impedance voltage drop is different, too.

  而不同容量的负载，以及负载的不同功率因数，对同步发电机励磁磁场的作用是不同的，对同步发电机的内部阻抗压降的作用也是不一样的。

• 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準和对功率因数的要求，确定电动机的电压等级和类型。

• this thesis describes the main characters and development of power factor correction(pfc) technology. its investigative necessity and importance are clarified.

  本文介绍了功率因数校正（pfc）技术的发展及其主要特点，阐明了其研究的必要性和重要性。

• power factor power factor is the cosine of the angle between the actie power( kw) and apparent power( ka) in a circuit.

  功率因数功率因数是电路中有功功率（w）视在功率（a）间夹角的余弦值。

• 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.

  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。

• 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 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。

• the importance of the high power factor has been recognized by residential and office equipment manufacturers for their own benefit to maximize the power available from a wall outlet.

  居民和办公设备制造商都已经认识到提高功率因数的重要性。他们都可以通过提高功率因数而获得最大的电能并从中获益。

• high efficiency and high power factor are characteristic of rare earth and permanent magnetism and synchronous motor. lt is a energy saving product.

  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。

• it can obtain the improve of power factor of the input motor power, and can lighten its capacity.

  可实现电机输入电源功率因数的改善，减轻其容量。

• 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.

  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。

• lower power factor and larger harmonic current of color monitor seriously pollute public electric network.

  彩色显示器的功率因数低、谐波电流发射大，严重污染了公用电网。