低频振荡的英文

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英文翻译
造句

low frequency oscillation
low-frequency oscillation

低频 low frequency
振荡 generation; oscillating; osc ...
低频振荡器 lf oscillator; low frequency generator; low frequncy oscillator; low-frequency generator; low-frequency oscillator; lsd low frequency oscillator; sd ow feqency osciato
超低频振荡器 ultra-low frequency oscillator; ultralow-frequency oscillator
低频振荡燃烧 chugging; low-frequency combustion
低频振荡信号 lfo low frequency oscillation
特低频振荡器 ultra-low frequency oscillator
音频振荡器，低频振荡器 audio oscillator
低频振荡燃烧不稳定性 low-frequency combustion instability
低频振动 low frequency vibration; low-frequency vibration
摆频振荡器 wo ulator; wobbulator
倍频振荡 double-frequency oscillation
变频振荡器 frequency change oscillator; variable frequency oscillator; variable oscillator; vfo
差频振荡 difference frequency generation
差频振荡器 beat frequency oscillator; beat-frequency oscillartor
超声频振荡 ultrasonic oscillation
导频振荡器 pilot frequency oscillator; pilot oscillator; pilot-frequency oscillator; pilotfrequencyoscillator
调频振荡器 fm oscillator; frequency modulated generator; frequency modulated oscillator; frequency modulation oscillator; frequency-modulated generator; frequency-modulated ocsillator; frequency-modulated oscillator
定频振荡器 fixed frequency oscillator
多频振荡器 multifrequency alternator; multifrequency generator; multiple frequency oscillator
高频振荡 hf oscillation; high frequency oscillation; high-frequency oscillation; higher-order of oscillation
高频振荡器 hfo high frequency oscillator; high frequency alternator; high frequency generator; high frequency oscillator (hfo); high frequency vibrator; high-frequency generator; high-frequency oscillator
高频振荡型 high frequency mode
和频振荡 sum frequency generation
混频振荡器 mixing oscillator

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例句与用法

This dissertation is devoted to the study on the low frequency oscillation and torque ripple of the induction motor variable frequency speed adjustment system that is fed by an inverter for the theoretical research and practical application
论文从理论及实践两方面对逆变器供电异步电动机变频调速系统的低频振荡、转矩脉动进行了深入研究，内容包括以下几个部分：第一部分研究系统低频振荡的模拟和判据。
With the national network interconnection project in china , the network of power system is more and more large and complex . and then the low frequency oscillation is becoming one of the most serious questions which threaten the stability of power system
随着全国互联网工程的进行，我国电网规模日益增大，运行方式越来越复杂，低频振荡日益成为危害系统稳定的一个重要问题，电力系统稳定器则是解决该问题的有效措施之一。
Furthermore , the zonal propagation of the intraseasonal oscillation ( iso ) of the sh subtropical high is also documented . results show that the australia high ( ah ) is influenced by the mascarene high ( mh ) through the eastward propa gation of the quasi - biweekly oscillation
另外还分析了南半球副热带高压低频振荡的纬向传播，指出马斯克林高压(马高)对澳大利亚高压(澳高)的影响主要通过准双周低频振荡的东传得以实现。
According to these situations , this dissertation brings forward an integrated analysis method and control strategy in oscillation research , which can be applied to prompt the level of dynamic stability analysis and provide the solution for real system
本文根据电力系统发展的特点和实际系统需要，提出了一整套针对低频振荡问题的综合分析方法和智能控制策略，对提高动态稳定分析水平、解决实际系统出现的问题，具有一定的参考价值。
At the same time , this paper gived a great deal of simulation research for the total damping of system and the damping of electromechanical mode of the system using a useful tool in power system - ssat ( small signal analysis tool ) . the conclusions provide the important reference for the suppression of low frequency oscillation and stable operation in power system
并利用一种有效的电力系统专用工具? ssat ( smallsignalanalysistool )对系统总阻尼以及系统的机电模式阻尼问题进行了大量的仿真研究。所得结论对于电力系统低频振荡的抑制以及电力系统稳定运行具有重要的参考价值。
There are five parts are as follows : in part one , the concept of switching function is introduced first to establish the nonlinear mathematical model of the induction motor variable frequency speed adjustment system which is fed by a sine pulse width modulated ( spwm ) inverter and takes the effect of the main magnetic circuit saturation into consideration , then the low frequency oscillation of the system is simulated according to the model . next , from the view point of energy conversion of the inverter - induction system , a criterion for the low frequency oscillation is proposed to determine whether the system is in low frequency oscillation which is judged by whether the interval of the negative current component of the inverter input current is more than 1 / fc ( fc is the carrier wave frequency of the inverter ) or not
首先引入开关函数概念，建立了正弦脉宽调制( spwm )逆变器供电异步电动机，考虑主磁路饱和时的变频调速系统整体数学模型，模拟系统的低频振荡；其次从逆变器-异步电动机系统能量转换角度出发，提出通过检测逆变器输入电流中负电流的间隔时间是否大于1 / f _ c ( f _ c为逆变器载波频率)来判定系统是否出现低频振荡；最后的实验结果验证了系统低频振荡建模和判据的实用性和正确性。
Introduction of the angle measurement technology , comparison of kinds of analyses for eletromechanical oscillation , application of prony method to the data obtained through wide - area measurement in power system analyses are studied in the paper . the main studying achievement of this paper are listed as following : 1 . the paper presents introduction , comparison and existent disadvantage of some method for low frequency oscillation
本文简要介绍了基于gps的功角测量技术，围绕着使用prony方法提取电力系统低频振荡特征根这个中心，分析了该方法对测量数据的要求及其在电力系统稳定器设计中的应用等理论问题，最后结合实际工程项目设计和编写了实时数据服务器程序。
The angle measurement technology based on gps is introduced briefly . simulation with matlab and psasp , and the validity of prony method based on wide - area measurement through gps for power system low frequency oscillation is shown in this paper . 3
简要介绍了基于gps的功角测量技术和prony分析方法，提出利用基于广域测量的prony方法分析电力系统低频振荡的思想，并利用psasp和matlab工具大量的仿真计算验证了基于gps广域测量系统的prony方法在研究低频振荡问题上的有效性。
After comparing pss , pid and linear optimal control theory , the linear optimal controller of upfc with state feedback is proposed which is based on modern control theory . it ' s effect of damping the low frequency oscillation and improving the stability of power system is ideal . finally the sub - optimal control theory is presented according to practicability
通过分析比较电力系统稳定器（ powersystemstabilizer -简称pss ）、 pid及线性最优控制的优缺点及使用范围，从而应用现代控制理论中的最优线性控制理论，基于upfc的动态模型，构造了upfc的状态反馈线性最优控制器，有效地抑制了系统的低频振荡，提高了电力系统的动态稳定性。
This thesis investigates the relative theory of low frequency oscillation in power system and shows several ways to damping the low frequency oscillation in respect of control . by comparing the advantages and disadvantages of these schemes , this thesis presents the method of designing linear optimal controller of upfc with state feedback . the phenomenon of low frequency oscillation is described at first and then the primary theories of it are analyzed
本文对电力系统中常见的低频振荡现象进行了相关的理论分析，并针对控制方式提出了几种抑制低频振荡的方法，通过对这几种方法的优缺点的比较，最终提出了统一潮流控制器（ unifiedpowerflowcontroller -简称upfc ）的状态反馈线性最优控制器的设计方法。