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。
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.
在单位功率因数整流器中，利用瞬时值比较法来控制电源电流，不但控制简单，还可有效限制器件的最高开关频率。
The method of instantaneous value comparison for source current control of unity power factor rectifier possesses advantages of simplicity as well as valid restriction for maximum switching frequency.
提高功率因数是提高电能利用率的主要手段。
Increasing power factor is main measure for increasing the utilization factor of power.
采用功率因数自动调整仪可根据负荷性质，适时地投入或切除电容器以保证功率因数接近1，从而最大限度地利用现有能源。
Through adaptive putting into and reducing the capacitor used of power factor automatic regulation instrument, ensuring power factor is to near 1, thus the utilization of power can be up to maximum.
本文对新型客运电力机车功率利用、主电路选择和功率因数补偿等进行了初步探讨。
This paper makes an approach to the utilization of powers, selection of power circuits and correction of power factor for new electric passenger locomotive.
该表达式与器件静特性、功率因数、调制度及负载电流有关，利用其计算不同载波调制下通态损耗时只需改动导通占空比。
The results clearly show conduction losses are the function of semiconductor static characteristic, power factor, modulation depth and load current.
该文利用电机的稳态数学模型，对恒功率因数控制方案进行了理论上的研究。
Based on the steady state model of induction motors, we make researches on it.
本文在超声发生器中加入功率因数校正电路（APFC），并利用单片机控制数字电位器实现了对电压反馈网络的调节，从而实现APFC输出电压在一定范围内的自适应控制。
The self-adaptable control of output voltage could be realized under certain range by adding a APFC in ultrasonic generator and adjusting voltage feedback network with digital potentiometers.
功率因数校正技术对输入电流进行校正，提高设备利用率，减少谐波对电网的污染。
Power Factor Correction (PFC) technique make input current waves sine, improve efficiency of the system and reduce harmonic waves.
功率因数校正技术对输入电流进行校正，提高设备利用率，减少谐波对电网的污染。
Power Factor Correction (PFC) technique make input current waves sine, improve efficiency of the system and reduce harmonic waves.
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