三次谐波

光学表面上激光染料膜的二次和三次谐波的产生

SHG and THG of laser dye molecules adsorbed on optical surface

初始入射基频光束腰半径较小时，离散效应是二次谐波转换和三次谐波转换效率降低的主要因素，失谐角对三次谐波转换的影响较小；

When the waist radius of the fundamental wave is small , the walk-off is the main factor that makes the SHG and THG conversion efficiency decrease , while the effect of detuning angle is little .

Mg蒸汽中双光子共振三次谐波的产生

Resonant third - harmonic generation in mg vapor

机端TV三次谐波电压及其对三次谐波保护的影响

Analysis of Third Harmonic Voltage Originated From Generator Terminal TV and Its Influence on Third Harmonic Protection

改进Z源逆变器的三次谐波注入控制策略

Third Harmonic Injection Control Strategy of Improved Z-Source Inverter

消除电网三次谐波三电平PWM变频调速装置

Three level PWM conversion speed - governing device

三次谐波系统动态行为的LYAPUNOV指数分析

LYAPUNOV Exponent Analysis of Dynamic Behavior in Third Harmonic Generation

ZnS光波导中微微秒激光的三次谐波

Third harmonic of ps laser in a ZnS thin film waveguide

分析了三次谐波注入PWM和电压空间矢量SVPWM的优越性和可靠性。

Analyze the superiority and reliability of three harmonic PWM and voltage space vector SVPWM .

极化子效应对Morse势阱中三次谐波产生的影响

Polaron effects on the third-harmonic generation in Morse quantum well

最后，为正在研制中的Ka波段三次谐波倍增回旋速调管放大器设计了一种链式群聚腔。

Finally , a chain bunching cavity is designed for the developing Ka-band frequency-tripling gyroklystron amplifier .

8mm波段三次谐波复合腔回旋管的非线性分析

A nonlinear analysis on 8mm band third-harmonic complex cavity gyrotron with gradual transition

调制波主要采用三次谐波注入PWM和电压空间矢量SVPWM，并详细阐述了其原理与实现方法。

The modulation wave mainly use three harmonic injected PWM and voltage space vector SVPWM , and elaborate its principle and realizing method .

MX络合物中电荷密度波和自旋密度波对三次谐波产生系数的影响

Effect of charge density wave and spin density wave on the third harmonic generation in MX complex

用YAG∶Nd激光的三次谐波作激励光，我们在光纤维中观测了紫外受激喇曼散射。

Using the third harmonic radiation of a YAG : Nd laser Radiation as excited light , we have observed the ultraviolet stimulated Raman scattering in optical fiber .

在传统SPWM方式以及注入三次谐波方式的基础上，提出了适合本拓扑结构的两相控制方式。

Based on traditional SPWM and Triple Harmonics Injection method , two-phase control method which is suitable for this topology has been proposed .

BBO晶体中飞秒脉冲的二次和三次谐波振荡产生

Femtosecond Pulse-Second and Third Harmonic Generation with BBO

本文将三次谐波注入的PWM控制方案应用到四桥臂三相逆变器中，可以带非对称负载且具有较高的电压利用率。

The PWM control strategy with 3-th harmonic in addition is presented for four-leg three-phase inverter , the inverter can deal with unbalanced load and has a high utilization of dc bus voltage .

在非线性电阻消谐方式下，正温度系数（PTC）热敏电阻和三次谐波滤波器可以较好地解决零序电压偏高的问题。

Positive temperature coefficient ( PTC ) thermistor and triple frequency harmonic filter can reduce zero sequence voltage when a nonlinear resistance is used to prevent ferroresonance .

：阐述了功率因数校正（PFC）技术的原理和意义；重点分析了输入电流的三次谐波产生机理。

The paper introduces the principle of PFC technique and its great significance , puts stress on analyzing the mechanism of the third harmonic of input current .

结果指出，TE（301）回旋三次谐波工作的回旋管有51%的高效率。

The numerical results show that the gyrotron using TE_ ( 301 ) mode at third cyclotron harmonic has a high efficiency of 51 % and QP_w of 1827 MW .

本文首次研究了沉积在具有无规分形结构的a&Al2O3陶瓷断面上的Au逾渗薄膜系统的三次谐波系数和临界电流的关系。

In this paper , the relation between the third harmonic coefficient and the critical current of the Au percolation film system deposited on the random fractal surfaces of α - Al2O3 ceramics is studied .

三次谐波法不适合在谐波分量过大的情况下使用，对MOA的老化程度无法做出定量分析；

The thrice-frequency harmonic wave method could not be used when the harmonic component was great , which could not give a quantitative analysis of aging degree .

根据8mm三次谐波回旋管对电子枪的要求，采用综合法和分析法设计了该双阳极磁控注入电子枪。

The triode electron gun is designed and calculated according to the requirements for 8mm third harmonic gyrotrons by this method , which combines synthesis with analysis .

对于脊波导TE（101）、TE（301）模式电子回旋基波和回旋三次谐波工作的三种回旋管情形做了详细的计算。

Detailed calculations are made on the gyrotron using TE_ ( 101 ) mode at the fundamental cyclotron harmonic , the gyrotron using TE_ ( 301 ) mode at the fundamental and the third cyclotron harmonic , respectively .

研究了电子-电子相互作用与电子-声子相互作用的竞争对MX络合物基态及三次谐波产生系数（THG）的影响。

We have investigated the effect of the competition between the electron-electron and elec-tron-phonon interactions on the ground state of MX complex and its third-harmonic generation ( THG ) .

采用三次谐波励磁的同步发电机，通过AVR电路产生稳定的380V三相交流电，可以带动打磨机、空气压缩机等功率较大的电动工具；

It can generate a steady 380 V three phase alternating current through an AVR circuit , and can drive heavy electric tools such as polisher , air compressor and so on .

采用三次谐波注入（TRIPWM）方式和直流电压补偿优化SPWM控制策略，提高系统的直流电压利用率。

In order to improving the utilization of the DC voltage the control system optimizes the SPWM strategy by adopting the TRIPWM method and DC voltage compensation .

为了减少整流电路中电流谐波的影响，实现了一种基于80C196KC单片机控制的三次谐波电流注入滤波方法。

The method of harmonic current injection of three-phase rectifier is realized in order to reduce the influence of harmonic current in the three-phase rectification circuit .

为了进一步减小储能电容，本文分析PFC变换器的输入功率脉动与输入功率因数之间的关系，提出在输入电流中注入适量三次谐波的方法。

In order to further reduce the value of the storage capacitor , the relationship between the pulsation of the input power and the input power factor is analyzed , and injecting the 3rd harmonic current to the input current is proposed to reduce the pulsation of the input power .