电网故障信息含有许多谐波分量。
The fault information of a power system contains many harmonic components.
谐波分量的出现使损耗电流信号的分形维数增加。
The fractal dimension of loss current waveform increases because of the growth of harmonics.
该方法可以实现快速的检测出谐波分量，并补偿无功功率。
This method can inspect the harmonic component and reactive power immediately.
并且这些低频线谱基本上都是转子轴频和叶频的谐波分量。
These low frequency spectrum lines are basically the harmonics of the rotor shaft frequency and the blade-passing frequency.
本文分析了整流器在不同换流重叠角时的桥臂反压波形及谐波分量。
The waveform of the reverse voltage across the bridge arms and the harmonic contents are analysed.
SPWM调制是提高逆变电源电压利用率和减少谐波分量的重要方法。
SPWM modulation is the important way to improve the invert power supply voltage efficiency and reduce the harmonic component.
研究结果：XLPE电缆的水树的劣化使得损耗电流中谐波分量增加。
Research results:Degradation of XLPE cable by water trees gives rise to harmonics in the loss current.
随着越来越多的非线形电力负荷投入使用，使城市电网中的谐波分量猛增。
The harmonic component in city power grids has considerably increased since more and more nonlinear power loads turn up in the grids.
在提取样本动态光谱时，以是否加入谐波分量为标准分成实验组和对照组。
This paper took whether adding the energy of harmonic waves into the DS data as the division standard to generate two groups.
该算法可以滤去短路电流中的交流谐波分量，得到直流电流变化率的准确结果。
By this algorithm, the ac harmonic components of short-circuit current can be filtered, and the accurate DC current rate of change can be obtained.
理论上新算法可以消除任意衰减时间常数的直流分量对所求各次谐波分量的影响。
In theory, the influence of the exponential DC component on the fundamental wave component with random decay time constant can be completely eliminated with the algorithm.
该算法对于只含奇次谐波分量的一类半波对称波形，省去了偶次谐波分量的计算。
The half-wave symmetric FFT algorithm can omit the even harmonics in its calculation, according to only have odd harmonics in the half-wave symmetric signals.
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。
The experiment results show input power factor, distortion factor, crest factor, total harmonic distortion and harmonic components.
很明显，十二相整流装置与六相整流装置相比，由于其谐波分量很小功率因数较大。
Obviously, the 12-phase rectifier device, and compared to the six-phase rectifier devices because of its small power factor harmonic component larger.
由于直流供电电源纹波的影响，电压控制SPWM逆变电路的输出谐波分量幅值较大。
Because of the ripple of the DC power supply, the output harmonic amplitude of the voltage controlled SPWM inverter is higher.
实验证明，该设计结构简单，频率稳定度高，谐波分量少，可靠性好，满足测试要求。
Experiments prove that the design has the advantage of simple structure, highly stable frequency, less harmonic component, better stability, which can fulfill the test requirement.
再经过变换得到原电流的基波分量，从原电流中减去基波分量得到要检测的谐波分量。
The fundamental current can be reconstructed by transformation while the harmonic current can be gained by subtracting fundamental components from the original current.
但由于实际波形中含有大量的谐波分量甚至指数衰减分量，直接影响了这些算法的精度。
Because real waves contain numerous harmonic wave and even exponentially. attenuating components, the accuracy of an algorithm depends on its filterability.
且光谱基波分量及低次谐波分量的贡献依赖于粒子直径、标准偏差及相对折射率的大小。
The contributions of wave component of different orders are dependence on the mean diameter, size distribution and relative refractive index of the particles.
目前有多种采用傅里叶算法求取信号谐波分量相量值的方法，使得工程技术人员无从选择。
Currently, a number of methods proposed for calculating the phasors of harmonic components of signals using the Fourier algorithm seem to make electrical engineers puzzled as to which to choose from.
提出了一种新型三相逆变器输出滤波器，它能有效地减少输出电压和电流中的开关谐波分量。
A new inverter output filter is presented. It can reduce efficiently the output voltage and current switching harmonic.
再将有源滤波器接入点后的线上电流的谐波分量反馈回来，作为调节器的输入，调整前馈控制的误差。
Active Filter access point and then after the line current harmonics back to the company as the regulator's input, adjusting the feedforward control error.
再将有源滤波器接入点后的线上电流的谐波分量反馈回来，作为调节器的输入，调整前馈控制的误差。
APF then access points al0ng the harmonic current feedback, as a regulator input, adjusted feedforward control error.
采用非模方法，得到了扰动量的剪切傅里叶谐波分量随时间演化的方程组，并对方程组进行了数值分析。
Using the Nonmodal approach, the temporal evolution equations with Spatial Fourier Harmonics for the disturbed quantities are obtained, and have been studied numerically.
采用含有丰富谐波分量的窄脉冲电流作为励磁信号对非晶丝直接励磁，使传感器具有灵敏度高、响应快的优点。
The magnetic sensor has characteristics of high sensitivity and quick response due to the amorphous wires excited directly by sharp pulse train current containing amount of harmonic signals.
发现了建立过程的平滑作用可以明显地削弱信号的谐波分量，并存在一个最佳转换频率，使谐波失真达到最小值。
It shows signal harmonics is obviously weakened by the smoothing action in the setting process and there is a best conversion frequency to minimize harmonic distortion.
试验结果表明，本文提出的方法能正确地分析出表面波纹度的激振特性以及引起轴承振动的主要波纹度谐波分量。
The vibration signal is modeled and analyzed by using the technique of time series analysis, and the main factors of the surface waviness which cause the ball bearing vibration are…
本文提出的角度PWM方法着眼于电机的定子电压空间矢量，使其矢量角均匀变化，减小电压波形中的高次谐波分量。
The presented phase Angle PWM method is centering attention on motor stator voltage space vector and controls the vector Angle to vary linearly and so reduces higher harmonics in voltage wave.
分析矢量控制时，端部效应对永磁同步直线电机电磁推力谐波分量的影响，通过直线电机和旋转电机的实验数据比较，证明了理论分析的正。
The paper analyzes the force harmonics of the permanent magnet synchronous linear motor considering the end effects while the vector control technology is applied.
分析矢量控制时，端部效应对永磁同步直线电机电磁推力谐波分量的影响，通过直线电机和旋转电机的实验数据比较，证明了理论分析的正。
The paper analyzes the force harmonics of the permanent magnet synchronous linear motor considering the end effects while the vector control technology is applied.
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