查询词典 synchronous

In order to improve the power quality of distribution network system, one of the most effective methods is reactive power compensation. In this paper, the Distribution Static Synchronous Compensator for reactive power compensation was studied, and then the digital controller based on One-cycle control was designed. The waveforms of experimental device based on DSTATCOM of one-cycle control were given in this paper. It can be seen from the results that the fluctuation of DC capacitor voltage is lower, the dynamic response speed of DSTATCOM providing or absorbing reactive power is fast, and the accuracy of steady-state compensation can achieve the requirements of reactive power compensation in engineering basically

为了提高配电网系统的电能质量，对无功功率进行精确补偿是非常有效的方法之一；本文研究了配电网静止同步补偿器用于无功补偿，并设计了单周控制的数字控制器；文中给出了基于单周控制的DSTATCOM无功补偿试验装置工作过程中的波形曲线，从试验结果可见，本文设计的单周控制DSTATCOM无功补偿装置的直流侧电容电压在工作过程中波动较小，装置发出或者吸收无功功率的动态响应速度较快，稳态补偿精度基本能够达到工程中无功补偿的要求。

High power cascade static synchronous compensator is a typical nonlinear system; the control theory and algorithm of which are complex and abstract.

大容量链式静止同步补偿器是典型非线性系统，其控制理论和算法复杂且抽象。

In addition, there was some difference in cycle between self – generating sine signal and the actual electrical network, so the great accumulated error and non synchronous error will be presented after several cycles.

另外，由于在传统的傅立叶系数数值求解时，微处理器进行离散化，所用的内部产生的正弦信号周期不能与实际电网周期完全相等，因此在多个电周期后，会有较大的积累误差和非同步误差。

A novel analytical method has been established for on-line simultaneous determination of fluorene and acenaphthene by polarization synchronous fluorometryhyphenated with HPLC.

本文以高效液相色谱作为分离手段，以偏振同步荧光法为检测手段，实现了环境样品中芴、苊的在线同时测定。

In chapter Ⅴ, from the point of the system'view of the vibration data acquisitor for rotating machinery, the major—minor processor structure in this system is analysed, the characteristics of the major processor DSP56001, the function of the minor microcomputer PC have been explained. The Memory Spaces Configuration, Synchronous Serial Interface , Serial Communications Interface , Host— Port and Peripheral Buses of the DSP system are summarized, and its timing is explained. The DSP system interfaces with the boards have been explained further.

第Ⅴ章，从旋转机械振动数据采集器的系统出发，分析了该系统的主—次处理器结构，说明了主处理器DSP56001的特点及次微机PC的地位和作用；概述了DSP系统的存储器空间设置、同步串行接口、串行通讯接口、主接口和外设总线，并说明其工作时序；对DSP系统与各模块之间的接口关系，作了进一步的说明。

A novel sliding-mode control is designed with a load thrust observer for the Linear Permanent Magnetism Synchronous Motors,in order to compensate the disturbance and effectively minimize the system chattering;introducing an integral action in the sliding mode to eliminate the system error and chattering.

针对永磁同步直线电机提出了一种基于负载推力观测器的新型滑模变结构控制，从而实现对推力扰动的补偿，且大大削弱了推力纹波及系统的抖振；在滑动模态中引入积分环节来进一步消除系统的稳态误差和系统抖振。

The influence of configuration parameter of alnico in surface-mounted permanent magnet synchronous motor on waveform of airgap flux density is systematically analyzed.

系统分析了表贴式永磁同步电动机磁钢结构参数对气隙磁密波形的影响。

Permanent magnet synchronous motors ; alnico ; airgap flux density ; multi-objective optimization ; response surface model ; particle swarm optimization

永磁同步电动机；磁钢；气隙磁密；多目标优化；表面响应模型；微粒群优化算法

And as an electric generator the synchronous alternating current generator with rated voltage ~6,0kV was used at nominal capacity ~100kW with self-adjustment of frequency and stress.

而且如一个电的产生器有定格的电压~6，0 仟伏的同时交流电产生器在名义上的能力~100 千瓦由于自己的-调整频率被用和压迫力。

Synchronous and asynchronous chromosome separation was seen, and it was more common that the lagging chromosomes formed anaphase bridges.

有丝分裂过程中染色体的分离同步或不同步，不同步分离中的滞后染色体形成后期桥的现象更为普遍。

Panorama Many people are dancing in a large sitting room.

在一个大客厅里，许多人在跳舞。

We fully understand how a microwave oven cooks food, it is first necessary to talk ...

我们充分理解一个微波炉煮的食物，这是首先要谈。。。