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？
Line, bypass and power factor correction contactor coils can be directly controlled.
控制线路、旁通和功率因素校正接触器线圈。
On starting, this electric motor has high impedance and power factor, low current, and large torque.
电动机起动时阻抗大、电流小、功率因数高、转矩大；
Using magnetic sleeve can raise not only motor's efficiency and power factor but also the motor's torque.
而用磁性套筒改造电动机，不但可以提高电动机的效率、功率因数，而且其转矩比改造前也有所提高。
A flyback converter with zero current switching (ZCS) resonant and power factor correct (PFC) is proposed.
提出一种具有零电流关断(ZCS)的反激式单级功率因数校正(PFC)变换器。
It can figure out active power, apparent energy, reactive energy and power factor parameter and so on in software system.
用软件系统计算出有功电能、视在电能、无功电能及功率因数等参数。
In this paper, fundamental working principle of LED driving circuit and Power factor corrections (PFC) technique is given.
本文先阐述LED驱动电路和功率因数校正技术的基本原理。
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。
The degree to which the property right of factor has been realized depends on two aspects: efficiency factor and power factor.
要素产权的实现程度，主要取决于效率因素和权力因素两个方面。
One novel method for working out the economic power supply radius and power factor is proposed based on statistic datum in the paper.
提出了一种基于统计数据求解经济供电半径和经济功率因数的新方法。
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。
The saving energy control system is proposed for problem of oil drawing machine electric driver which efficiency and power factor is low.
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。
A weighted algorithm is proposed for reducing effectively the error caused by non-synchronous sampling in active power and power factor measurement.
提出了一种能有效地抑制由非同步采样引起的有功功率及功率因数的测量误差的加权算法。
Increasing core length properly can raise motor efficiency and power factor, but it will reduce locked-rotor torque ratio and breakdown torque ratio.
适当增加铁心长度可以有效提高电机效率和功率因数，但会导致启动转矩倍数和最大转矩倍数减小。
In addition, the dispersibility has great effects on the noload current and power factor while the effect on rated efficiency and rated current is little.
永磁体分散性对空载电流、空载功率因数、负载功率因数和过载能力影响较大，而对额定运行时的效率、电流影响不大。
As for the problem the high current and the vibration of the torque, the double closed loops which include the current and power factor Angle are worked out.
对于电动机起动需要控制起动电流和转矩震动的问题，采用双闭环的控制方案，即电流闭环控制和功率因数角闭环控制。
The approach, which takes the ratio of the stator voltage to current as the control criterion, improves the efficiency and power factor of asynchronous motors.
仿真计算及实验结果表明该控制方案可以使异步电动机在不同的负载下均呈现出较高的效率，并且兼顾提高功率因数。
It adjusts some technical parameters, such as the output DC voltage adjustable range, efficiency and power factor, wide band noise voltage, static regulation value.
调整了直流输出电压可调节范围、效率与功率因数、宽频杂音电压、稳压精度等指标。
The host computer finishes the calculation of active power, reactive power and power factor, inquire fuzzy form of controlling , give and publish the controlling amount.
工控机完成有功功率、无功功率以及功率因数的计算，并查询模糊控制表，给出控制量。
Results showed that the technique had well practicability and the motor satisfied the request of the torque and the wide speed band with improved efficiency and power factor.
样机的分析结果表明电机系统在满足提供大转矩和宽调速范围运行要求时，具有较高的运行效率和功率因数，而且该方法具有良好的可操作性。
The advantages of this system are simple in hardware, reliable at work, software module in design, easy extending, better use effect than others and power factor compensated near to one.
此系统具有硬件简单、工作可靠，软件模块化设计，便于扩充，使用效果好，其补偿的功。
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.
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 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。
The simulation result proves: Used this converter's topology structure, the envelope curve of import electric current follows entering voltage change. And power factor correction has been realized.
仿真分析结果证明：该变换器拓扑结构能够使输入电流的包络随着收入电压变化，有效的实现了功率因数校正。
Compared with the conventional TIG welding machine, this new inverter proves to have much higher efficiency and power factor, less volume and weight, and especially, more precise parameter control.
该焊机由于采用了中频逆变技术，使其效率和功率因数都有较大幅度的提高，不但减小了体积，减轻了重量，而且具有比传统TIG焊机更精密的控制、调节性能等。
Synchronous motor excitated magnet by direct current can make output mechanism specialities matched load specialities by means of adjusting exciting current to change magnetic field and power factor.
这是因为电励磁的同步电动机可通过调节励磁电流来改变其磁场和功率因数，使输出的机械特性与负载特性相匹配。
Experiments result shows that this control system increase work efficiency and power factor by applying nearby capacitance compensation theory. The control system processes fine saving energy effect.
实验结果表明该节能控制系统利用就地电容补偿原理，降低了抽油机的总损耗，提高了工作效率和功率因数，具有较好的节能效果。
The influence of variable load on a beam pumping unit on the electric current, input power, efficiency and power factor of the electric motor is discussed, and relevant calculating formulae are given.
讨论了游梁抽油机的变动载荷对电动机的电流、输入功率、效率和功率因数的影响，给出了计算公式。
It's a situation where knowledge is power, and just knowing where the asteroids are has decreased Earths 'estimated risk factor tremendously.
在知识就是力量的当今时代，知识的积累对小行星威胁地球风险要素评估的调低起到了至关重要的作用。
It's a situation where knowledge is power, and just knowing where the asteroids are has decreased Earths 'estimated risk factor tremendously.
在知识就是力量的当今时代，知识的积累对小行星威胁地球风险要素评估的调低起到了至关重要的作用。
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