奇次谐波

在实际工况中，三相电网电压的不平衡将会导致PWM整流器的输出电压产生偶次电压纹波，同时会导致网侧电流产生奇次谐波，从而降低电网的供电质量。

In the actual working condition , unbalancedness of three-phase input voltage will lead to even ripples at output voltage and odd harmonics at input current , and reduce quality of power supply .

得出结论：自生磁场对强激光在欠稠密等离子体中产生的相对论相干谐波辐射有重要作用，自生磁场激发偶次谐波辐射，并对奇次谐波辐射产生影响。

Results show that the self generated magnetic field excites even harmonics and influences the odd harmonics .

半波对称FFT算法针对半波对称性信号只含奇次谐波分量的特点，在算法流程中省去了偶次谐波分量部分。

The algorithm of half-wave symmetric FFT omits the even harmonics because the half-wave symmetric signals only have odd harmonics .

平衡式倍频器由有源Balun和两个FET倍频单元构成，实现了对奇次谐波的有效抑制。

The balanced doubler , which can reject odd harmonic , consists of active balun and two unit FET doublers .

强激光作用下等离子体尾波引起奇次谐波辐射的理论分析

The theoretical analysis of odd harmonic radiation by wake-wave of plasma to arouse under strong laser

这种作法已经被广泛应用，并可以用以改善市电频率成分（包括奇次谐波。）

This is fairly commonly utilized , and affects the line frequency component ( and odd harmonics ) .

在平衡电路中，节点处奇次谐波流过差分路径。偶次谐波流过共模路径。

In any balanced circuit , odd harmonics circulate in a differential path , while even harmonics flow in a common-mode path .

相比于常规的重复控制器，奇次谐波重复控制器能够实现更快的误差收敛和更少的存储空间。

Compared with conventional RC , odd-harmonic RC can achieve high tracking accuracy with faster error convergence rate and smaller data memory size .

发现由于双色场的相干效应，在其谐波谱中不仅产生了奇次谐波，还产生了偶次谐波和半整数次谐波。

It is found that there exist odd harmonics , even harmonics and semi-integer harmonics due to the coherent interaction between two colors .

结果表明，纹波可以分为由电路非对称性产生的奇次谐波和电容器充放电产生的偶次谐波。

The results showed that the odd harmonics of the ripple was due to the circuit asymmetry and the even harmonics due to the charge-discharge process of capacitors .

然而由于其非线性的特性，导致其输入电流中含有大量奇次谐波，对电网造成了严重的谐波污染。

However , because of its nonlinear characteristics , the switching power supply resulting input current contains a large number of odd harmonics , which cause serious harmonic pollution for the grid .

其次，运用傅里叶变换观察两种情况下的频谱特征，并比较发生故障电弧时奇次谐波含量和偶次谐波含量与正常情形时存在的差异。

Fourier transform is used to inspect the frequency spectrum characteristics . A comparison is made for the difference of odd and even harmonic contents respectively under in fault and normal operating conditions .

针对并联单相有源滤波器，本文提出了一种奇次谐波重复控制方案，来消除由非线性负载产生的电流谐波和补偿无功电流。

An odd-harmonic repetitive control ( RC ) scheme is proposed for shunt active power filter ( APF ) to eliminate the dominant harmonic currents caused by nonlinear loads and compensate reactive currents .

该方波信号经过低通滤波电路变为正弦电压信号，滤除方波信号的奇次谐波对输出信号的影响。

The square wave signal is converted to the sine wave signal by the function of the low pass filter , which make the odd square has less effect for the output of the receive coils .

仿真结果表明：电力机车向电网主要注入奇次谐波，3次谐波的含量占26%、5次谐波的含量占14%、7次谐波的含量占10%、9次谐波的含量占7%。

This conclusion is that the electric locomotive injects odd harmonic current into grid . There is 3rd harmonic content 26 % , 5th harmonic content 14 % , 7th harmonic content 10 % and 9th harmonic content 7 % .

相应的工作方法有变频法和奇次谐波法，变频法观测方波的基波，奇次谐波法同时观测方波的基波和奇次谐波。

The corresponding working methods include variable frequency method and the odd harmonic method . Variable frequency method observes the fundamental wave of the square wave , while the odd harmonic method observes both the fundamental wave and odd harmonic wave at the same time .

电力系统奇阶次谐波分叉的数值模拟

Numerical simulation of odd subharmonic bifurcations in power systems

当倍频场光强增加到基频场的25%时，奇（偶）次谐波开始出现同增同减的关系。

When the intensity of the second-harmonic is increased to 25 % of the fundamental field , the odd-order and even-order harmonics start to be modulated in the same way .