As one of inverters, Sinusoidal Pulse Width Modulation (SPWM) inverters can achieve low total harmonic distortion (THD) output wave.
正弦脉宽调制(SPWM)逆变器作为逆变器的一种，可输出谐波含量小的正弦波形。
According to the analysis of wave function, we can find that harmonic potential is a good model to describe quantum dots.
根据对波函数的分析发现，谐振子势是描述量子点的一个较好的势模型。
In this paper, the power problem of completely wave rectifier is discussed by many methods respectively, such as harmonic analyses.
利用谐波分析等方法分别探讨单相全波整流电路的功率问题。
The harmonic screw type valve is driven by the double wave harmonic screw. It can transform circle movement to line movement for the closing and opening of the valve.
谐波螺旋式阀门采用双波谐波螺旋传动，实现由圆周运动向直线运动的转化，实现阀门的启闭。
A distorted sine signal is simulated in this paper, and the harmonic analysis is carried out through the above measure, revealing the state of its basic wave and harmonic waves.
该系统模拟生成一畸变正弦信号，并运用该系统实现谐波的在线监测分析，得出其基波与谐波的情况。
Simulation and experimental results show that the proposed converter has sine wave input current and output voltage, low harmonic content, adjustable power factor, and zero voltage commutation.
仿真和实验结果表明：所提出的变换器输入电流和输出电压为正弦，谐波小且输入功率因数可控，并可实现零电压换流。
Also, optimized SAPWM modulation wave has been utilized, improving the utility ratio of DC voltage and restraining effectively the output harmonic current of inverter.
并采用优化的SAPWM调制信号，提高了直流电压的利用率，并能有效地抑制逆变器输出的谐波电流。
The harmonic wave has great harm, and harmonic sources are widely distributed, so the harmonic current caused by different harmonic sources should be analyzed one by one.
由于谐波危害很大，而且谐波源分布广泛，因此对不同谐波源产生的谐波电流应逐个分析。
If the stator inside winding is out of order, we must consider the influence of the harmonic wave with low orders or fraction orders when calculating the air space inductance values.
如在定子绕组内部故障情况下，气隙电感量的计算必须考虑低次和分数次谐波的影响。
The counteracted current by going through the notch filter based on adaptive filter technique is proposed to eliminate the residual fundamental wave and its harmonic wave.
文中提出，背景电流抵消后让信号通过基于自适应滤波技术的陷波器，可去除背景中残留的基波及谐波电流的影响。
To avoid device damage caused by harmonic wave, a VQC device integrating harmonic suppression function is presented in terms of the filter capability of capacitor and reactor.
为避免谐波问题造成的电容器等设备损坏，提出了根据电容器和电抗器的滤波能力，把谐波抑制功能加入电压无功控制（VQC）装置。
Further along, the influence of harmonic wave of magnetic conductivity of air gap and saturation of motor on wave pattern of wind electric current of micro-step driving was analyzed.
进而分析了气隙磁导谐波及电机饱和对微步驱动电流波形的影响。
Employed wave propagation approach, the vibrational power flow of a submerged infinite cylindrical shell coated with unconstrained viscoelastic layer excited by a radical harmonic force is studied.
采用波传播分析方法，讨论了外部敷设粘弹性自由阻尼材料的无限长圆柱壳在流场中受径向简谐激励的振动功率流。
The harm and type of harmonic wave were introduced, and the principle of active filter was analyzed as well.
介绍谐波的危害，产生谐波的类型，有源滤波的原理。
The paper introduces the causes of harmonic wave and its impact on transmission lines and electric equipments in Wuxi grid.
介绍了江苏无锡地区电网谐波的产生，分析了电力谐波产生的原因以及对输电线路、电器设备等的影响。
At last introduce the harmonic wave gear transmission's usage in military and civil field. Also introduce its development trend in the future and some problems which need to be studied and resolved.
最后介绍了谐波齿轮传动在军事和民用领域的应用情况和谐波齿轮传动未来的发展趋势及亟待研究解决的问题。
Active power Filter (APF) technology is one of the important ways to realize harmonic wave compensation of electrical network and improve the quality of power supply.
有源电力滤波器(简称APF)技术是一种实现电网谐波补偿、改善供电质量的重要方法。
Based on this, the methods for compensating the harmonic wave are discussed.
在此基础上，对该类系统的谐波补偿方法进行了探讨。
The fluctuation circle of aquatic products price between 1978 and 2000 via ratio of variation and harmonic wave was researched.
采用变异率指标与谐波分析法研究了1978-2000年水产品年度收购价格波动的周期性。
The current or voltage harmonic wave in power lines may cause abnormalities in self synchronization drive, computer, telephone, etc.
电力线路的电流、电压谐波效应可以引起自同步拖动、计算机、电话等异常运行。
The errors of harmonic wave analysis and direct sampling in electric parameters measurement are analyzed. The method to minimize errors is presented.
分析了电力参数微机监测中的直接采样计算法与谐波分析法的误差，并提出了减小误差的方法。
A higher harmonic wave filter was designed.
设计了高次谐波滤波器。
The source of the harmonic wave in the power system mainly comes from all kinds of nonlinear devices.
电力系统中产生的谐波主要来自各种非线性用电设备。
At the same time, the characteristic of probability of harmonic wave current can be obtained.
同时得到了该次谐波电流的概率统计特性。
Proceeding from the effect of harmonic wave on the heating of electric motors , the author analyses the corresponding microcomputer protection algorithm and some relevant questions.
从介绍谐波对电动机发热的影响出发，分析了相应的微机保护算法及有关问题。
In this paper, firstly the mathematic model for variable frequency motor is developed, and harmonic wave is analyzed when variable frequency motor is fed by inversion.
本文首先建立变频电动机的数学模型，对逆变器供电时的谐波进行了分析。
These methods are valid to restrain the harmonic wave in arc welding inverter.
这些方法对于抑制弧焊逆变电源的谐波是行之有效的。
On the basis of analysis of operation performance of AC motor, the harm of harmonic wave of electric net work to electric motor is summarized in the paper.
在分析交流电机工作特性的基础上，阐述了电网谐波对电机的危害。
Double wave function quantum theory is applied to describe the motion of three dimension isotropy charged harmonic oscillator in a uniform magnetic field.
讨论均匀磁场中三维各向同性带电谐振子的双波函数描述，得到量子和经典极限条件下的结果。
The reasons for the generation of harmonic wave in electric network during the running of large scale electrochemical rectification devices are analyzed.
分析大工业电化学整流装置运行过程中产生电网谐波的原因，认为要保证电网的安全运行就要抑制用电设备产生谐波。
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