介绍了一种脉宽调制型功率因数测量电路的工作原理。
Introduced the principles of pulse modulating circuit for measuring power factor.
该文论述了负载电流为非正弦波时功率因数测量的新方法。
This paper presents a new method for measuring the power factor in nonsinusoidal load current.
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。
By analyzing the conventional power factor measurement methods, a new measurement method of power factor based on DSP technology is proposed.
采用傅里叶级数展开计算法、实现对电压、电流、功率因数和电量的测量和计算；
It uses Fourier series in expanding calculus, to achieve the measuring and calculation of volt, current, power factor and quantity of electricity.
文章提出了将线性发电机(LG)并入现有SCM以提高输出功率、改善功率因数和测量系统的可行性，并在山梨磁悬浮试验线进行了试验。
We studied the feasibility of a linear generator (LG) that is integrated into an existing SCM, improved the output, power factor and measuring system, and tested it on the Yamanashi Maglev test line.
该系统可以测量电机的电压、电流、功率因数、功率、温度、转矩和转速，能够对电机参数进行快速准确地测定分析，用于电机的控制和智能保护。
The system can be adopted to measure electrical machine parameter quickly and accurately as well as analyse measuring data, so it can be used in electrical machine control and intelligent protection.
电力系统中常需测量电压、电流、功率因数、有功功率、无功功率和视在功率等参数。
In an electric power system, the following parameters often need measuring: voltage, current, power factor, power, reactive power and apparent power.
所设计的电网参数测试仪可以测量功率因数、电压和电流的有效值、瞬时值等参数。
The tester designed can be used to measure the parameters, such as power factor, effective value of voltage and current, instantaneous value, etc.
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。
A weighted algorithm is proposed for reducing effectively the error caused by non-synchronous sampling in active power and power factor measurement.
用于测量光源的电性能参数，测量电压、电流、功率、功率因数。
For measuring the electric performance parameters of light sources, measuring the voltage, current, power and power factor.
在电力系统管理过程中，有必要对功率因数进行实时、准确的测量。
It is necessary to detect the power factor in the course of electric power system management.
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.
测量功能：高精度测量电流电压、P、Q、功率因数、频率、零序电流、计算电度；2路脉冲量输入实现外部电度表自动抄表；
Measure function: can measure current, voltage, active power, reactive power, frequency, zero sequence current, electric energy, 2 pulse inputs implement watt-hour meter auto read;
测量功能：高精度测量电流电压、P、Q、功率因数、频率、零序电流、计算电度；2路脉冲量输入实现外部电度表自动抄表；
Measure function: can measure current, voltage, active power, reactive power, frequency, zero sequence current, electric energy, 2 pulse inputs implement watt-hour meter auto read;
应用推荐