查询词典 harmonic

Converting the three-phase current coordinate by d-q transformation,picking out the fundamental active component,then the harmonic and reactive component was detected.

通过d-q变换对三相电流进行坐标变换，提取其基波有功分量，从而检测出其谐波与无功分量。

The technique made full use of the characteristic of PR controller which can realize zero steady-state error in AC input signal in stationary frame. In the method, the active and reactive current component in the vector control strategy were transformed in the stationary frame to achieve the objective of keeping the DC-link voltage constant, adjusting the power factor and decoupling the active and reactive power. Compared with conventional double close-loop proportional integral controller, the PR technique is better in harmonic compensation without the complex rotating frame transformation and the couple or feedback voltage which is easily influenced by temperature and circuit parameters. The control algorithm is easy to be realized while the robustness and power quality is improved.

该方法充分利用了PR控制器能够在静止坐标系下对交流输入信号无静差控制的优势，将矢量控制策略下的有功电流和无功电流分量转换到静止坐标系下进行调节，实现网侧变换器维持直流电压稳定和调节功率因数的控制任务和双馈电机有功、无功功率的解耦控制，与传统的双闭环PI控制相比，该策略无需繁琐的坐标旋转变换，不存在受温度及电路参数影响的耦合项和前馈补偿项，且易于实现对系统低次谐波电流的补偿，减小了控制算法实现难度，提高了控制系统的鲁棒性和电网电能质量。

In chapter 5 the harmonic retrieval problem in colored non-Gaussian noise is addressed in real domain.

第五章在实数域研究非高斯有色噪声中的谐波恢复问题。

The real variable theory of the Hp space is one of the most wealthiest fields of harmonic analysis from 1970s.

H~p空间的实变理论是上世纪70年代以来调和分析中最富有成果的领域之一。

A response reanalysis approach of structure under harmonic or periodic excitation has been studied with original vibrating response.

再分析方法已应用到诸多领域，如结构静响应的再分析，结构振动模态的再分析，这些方面的研究已取得很大进展。

My basic conclusion: to protect and reanalyze traditional culture and to refine Meme, we should make great efforts to construct the harmonic culture of socialism with Chinese characteristics.

我的基本结论就是：全盘保存传统文化，重新解读文化传统，精心筛选文化基因，努力建设中国特色社会主义和谐文化。

At the aspect of refrainment of harmonic, the construction and theorem of power filter is introduced, which is used commonly.

在谐波抑制方面，对目前广泛应用的无源滤波器组成和原理进行深入分析。

Nonferrous metal processing enterprises have been attached increasing importance to detection and refrainment of harmonic.

因此，谐波检测与谐波治理越来越引起有色金属加工企业的重视。

The simulation with simple harmonic analysis on the performance of a regenerator was carried out.

采用谐波分析法，对回热器进行了模拟。

A method of simple harmonic analysis for calculation of regenerator in thermoacoustic heat engine systems is described.

针对热声热机系统回热器的数值计算，讨论了简单实用的简谐分析方法，并对热声制冷机中的热声板叠进行了数值计算与分析。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。