During it consumes electric power , feeds back a great amount of high order harmonic to energy supply system and jeopardizes the electric power quality 电气机车为单相整流负荷，它在消耗电能的同时向牵引供电系统注入了大量的高次谐波。
When zero sequence or high secondary harmonic current component appear in the circuit , the total current in the shield is zero , no electromagnetic interference with outside 当线路出现零序或高次谐波电流分量时，屏蔽层内电流总和为零，不对外界产生电磁干扰。
In addition , the time - width of pulse also influences hhg . to some extent the spectrum of hhg will become be tter when the time is prolonged 另外，激光脉冲时间的长短也会影响到高次谐波的性质，在一定范围内，随着脉冲时间的加长，电离率逐渐增大，谱线结构也越来越明显。
The apace vector pwm has the character of wide linear range , little higher harmonic and easy digital realization , so it is being widely used in pmsm driver system 摘要空间矢量pwm调制，它具有线性范围宽、高次谐波少、易于数字实现等优点，在新型的永磁同步电机驱动器中得到了普遍应用。
In power systems , the waveforms of voltage and current are distorted due to nonlinear loads , and the quality of electricity will decline for the great deal of harmonics generated 在电力系统中，由于非线性负荷的作用，使电压和电流的波形发生畸变，电网中出现了大量的高次谐波，从而导致电能质量下降。
We calculate high order harmonic generation and ionization probability of one - dimensional atom in intense laser field . our results are in good agreement with those of split - operator method ) dinger方程，研究了一维模型原子在强激光场中的高次谐波和电离几率，其结果与分裂算符方法所得的结果符合得很好。
In addition , the new approach of artificial neural network ( ann ) for measuring harmonics on - line is proposed , and the simulation results showed that it is superior to other existing methods 叙述了国内外的高次谐波测量的主要方法及其优缺点，进而提出应用人工神经网络这一新方法对高次谐波进行监测的优越性。
We are usually it is really wave that what say lose lose true , point at the voice return to put of process inside , increased the original signal the composition of high wave that have no but cause of lose really 我们通常所说的失真是谐波失真，指在声音回放的过程中，增加了原信号没有的高次谐波成分而导致的失真。
The reasons and harm of high harmonics in the substation of electric arc furnace , and some measures of avoiding and decreasing the high harmonics are put forward after careful analysis 摘要通过对电弧炉变电所在运行过程中出现的现象进行分析研究，指出了高次谐波产生的原因及其危害，提出了防止和减少高次谐波的措施。
Then we also investigate the high harmonic generation and ionization of the long - range and short - range potential atoms by using numerical solution of the time - dependent schrodinger equation for a one - dimensional atom in intense laser fields ) dinger方程，研究了具有相同基态能量的一维长程势原子和短程势原子产生高次谐波和电离几率的特点。
