调速

The scheme takes the difference between USA grid and PRC grid into account, and can run above the rating parameter, and it would benefits for the J-TEXT operation on the rating parameters. The stator magnetic flux linkage vector oriented control method is defined for motor double-feed varying speed system, thereafter the ac converter scheme of 100MW motor-generator double-fed varying speed system is proposed.

针对中美电网之间的差异所导致的机组转速下降和储能不足等问题，设计了100MW脉冲发电机组的双馈调速系统初步方案，方案利用机组电动机转子为绕线式转子的特点，采用双馈调速的方法将机组转速提升至750rpm，以解决机组储能不足的问题。

This thesis make a study on Vector-control VVVF system of asynchronous motor. In the course of study,making use of the mathematical model of asynchronous motor in MT axes . Then both open-loop control system and close-loop vector-control system are respectively simulated with simulation block SIMULINK in MATLAB.

本文对异电动机变频调速系统进行了研究、利用异步电动机在二相同步旋转MT坐标系下的数学模型，使用MATLAB中的仿真工具箱SIMULINK分别对开环控制系统和闭环矢量控制变频调速系统进行了仿真。

This thesis make a study on Vector-contorl WVF system of asynchronous motor. In the course of study, making use of the mathematical model of asynchomous motor in MT axes. Then both open-loop control system and close-loop vector-control system are respectively simulated with simulation block SIMULINK in MATLAB.

本文对异步电动机变频调速系统进行了研究，利用异步电动机在二相同步旋转MT坐标系下的数学模型，使用MATLAB中的仿真工具箱SIMULINK分别对开环控制系统和闭环矢量控制变频调速系统进行了仿真。

Based on the characteristics of adjustable speed with variable frequency systems, the paper presents an optimal design strategy.

本文根据变频调速集成系统的特点，提出具有针对性的变频调速电机优化设计策略。

Through the theory analyses of PMSM timing and the research of field orientable control, this paper theoretically prove another great achievement of field orientable control in the fields of AC motor timing.

本文通过对永磁同步电动机调速的理论分析，以及磁场定向控制的研究，从理论上证明了磁场定向控制在交流电机调速领域上的又一次重大发展。

A new scheme of frequency measurement in hydro-turbine governor is introduced in this paper. Instead using single-chip computer or P LC high-speed count module, it utilizes the interrupt functions and high-speed counter in the PLC base unit and peripheral circuit. With enhanced reliability and reduced cost, the governor designed in this scheme shows good application pr ospect.

介绍一种在水轮机调速器中实现频率测量的新方案，该方案不需要单片机，也不需PLC的高速计数模块，它是利用PLC基本单元的中断功能、内藏的高速计数器及相应的外围电路得以实现，从而既提高了调速器的可靠性，又降低了其成本。

Be aimed at the problem that system of traditional timing of large double housing planer exists, offerred frequency control system.

梗概： 针对传统的大型龙门刨床调速系统存在的新问题，提出了变频调速系统。

The theory and method are introduced for the simulation of the prime mover and its speed control system based on the Virtue Instrument technique.

介绍了基于虚拟仪器技术的动模实验室原动机及其调速系统模拟的原理和方法，进行了原动机及其调速系统模拟的软件和硬件的设计。

In this paper, the mixed simulation system of prime mover and speed governor system for marine power station is designed on basis of analysis of their static and dynamic characteristics.

在分析船舶电站原动机及调速系统静态、动态特性的基础上，设计了原动机及调速系统的混合仿真系统。

The principle of double-fed motor speed regulation is introduced, and a simulation model is built with Matlab software.

本文介绍了异步电机双馈调速的原理，并用Matlab构建出双馈调速系统模型。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。