harmonic distortion

Reactive power optimization for system network accompanied with harmonic distortion;

谐波畸变下电网的无功优化

An algorithm testing total harmonic distortion of seismic data acquisition system——FFT Pruning algorithm;

测试地震数据采集系统总谐波畸变的剪切FFT算法

99,and the total harmonic distortion is less than 6%.

99以上 ,总谐波畸变降低至 6 % 。

Proposed method is used to minimize total harmonic distortion (THD) with certain constraints.

在满足一定约束下,用该方法来减小变换器的总谐波畸变率(THD),以达到消除谐波的目的。

The relationship among input current harmonic distribution and power factor, total harmonic distortion, psophometric interference current, are discussed.

在此基础上进一步探讨了变流器功率因数、输入电流总谐波畸变率以及等效干扰电流等与谐波分布之间的关系。

The waveform quality of those PWMmethods are analyzed and compared according to the linear range,switching loss,total harmonic distortion(THD)and outputvoltage gain.

从调制范围、开关损耗、总谐波畸变率及输出电压增益等几个方面对比分析了各种 PWM 控制的波形质量，根据分析结果，提出了一种优化的零序偏移时间实现方式，即根据调制指数和负载功率因数角的情况来调整零序偏移时间，从而实现了整个调制范围内逆变器运行的性能优化。

The effect is termed harmonic distortion.

这种作用就称为谐波畸变。

There are now two criteria that are used to evaluate harmonic distortion.

现有两个准则可用来评价谐波畸变。

This deviation from perfect sinusoids is usually expressed in terms of harmonics distortion of the voltage and current waveforms.

这种偏离完全正弦的畸变称为电压、电流波形的谐波畸变。

Harmonics distortion problems are not new to utilities.

谐波畸变对电力部门来讲并不是新的问题

Study of Optimal Reactive Power Planning for Rural Power Distribution Network in Consideration of Harmonic Distortion;

考虑谐波畸变因素的农电网无功优化规划研究

The Analysis and Study of Harmonic Distortion in Distribution System Based on the Improving Genetic Algorithm;

基于改进型遗传算法的配电网谐波畸变分析与研究

Assessing Harmonic Impedance by Synchronously Layered Distortion Waves;

基于畸变波形同步分层估计谐波阻抗

Harmonic and reactive current detection of single-phase circuit with distorted voltage

畸变电压下单相电路谐波和无功电流综合检测方法

Now, the active filter circuit is widely adopted to repress the electric current distortion of high frequency syntonic wave.

目前抑制高次谐波电流畸变都采用有源滤波电路,并首选钽电容器作为其输出滤波电容。

the other is the cogging harmonics existed in the BEMF waveform.

一种是由于磁场分布受齿槽的影响，反电动势存在齿谐波，使其波形发生畸变。

These may be required where harmonic currents caused by the thyristor phase control of the reactor current must be filtered to prevent unacceptable transmission bus voltage distortion.

这里须滤去由电抗器相位控制引起的谐波电流以避免不能接受的输电母线电压畸变。

Test method for wavefront distortion of laser rods

GB/T11297.1-1989激光棒波前畸变的测量方法

The resulting distortions in the wavefront generate the fringe contours.

波阵面上发生的畸变生成了条纹线。

Research of Laser Small-scale Distorted Wavefront Measurement and Control;

激光小尺度畸变波前检测与控制研究

The Error Analysis of Current Transformer Based on Waveform Distortion Ratio

基于波形畸变的电流互感器误差分析

Time-frequency characteristics analysis of generating process of freak waves based on wavelet transform

基于小波变换的畸形波生成过程时频特性研究

photogrammetric distortion

摄影测量畸变差，畸变差

Analyses of Deformed Wave Shape of Flexible Wheel in Harmonious Double-wave Gear;

双波谐波齿轮中柔轮变形波的波形分析