This paper mainly discusses the control and protection system for the 20kw VSCF (Variable Speed Constant Frequency) Wave Power Electric Station.
本文着重介绍了20千瓦变速恒频波力发电系统的控制功能和保护体系。
The ACS 5000 variable speed drive system enables Boeing to run the fan in adjustable speed mode or at constant speed, depending on the protocols and parameters of each test.
ACS 5000变速驱动系统使得波音公司可以根据每个测试的规程和参数，自由设定可调速度模式或者恒速模式。
The decoupled control of active power and reactive power is a key technology of variable speed constant frequency (VSCF) wind energy generation system.
双馈发电机的有功和无功功率的解耦控制是变速恒频（VSCF）风力发电系统的关键技术。
This paper presents the design of thyristor triggering circuit for a variable speed constant frequency (VSCF) wave energy electricity generating system.
介绍了变速恒频波浪能发电系统的晶闸管触发电路设计。
Afterward, researches have been done into the precision of the whole measuring system from the joint variable and constant parameter of the robot and the influence of the temperature.
随后从测量机器人的关节变量、常值参数和温度影响等方面对整个测量系统的精度进行研究。
Additionally, the coordinate principle of variable displacement pump with constant power control and load-sensing control system is demonstrated, and establish the constant power control model.
针对液压泵恒功率调节系统，建立了动态数学模型并对恒功率调节与负载传感系统的控制协调机理进行分析。
Variable speed constant frequency generating system has been used in modern aircraft.
变速恒频电源系统已在现代飞机上使用。
A novel AC variable frequency converting control system with multiple functions is introduced. The system is suitable for maintaining constant oil pressure in main line of oil pipelines.
阐述了一种新型多功能交流变频调速控制系统，用于保持油田输油管主干线油压恒定。
Twin stator brushless doubly fed machine generation system which has no electrical brush and can running in variable speed and constant frequency condition is very suitable for wind power generation.
双定子无刷双馈发电机具有无刷化和可进行变速恒频发电的特点，非常适合于风力发电系统，对其发电系统的研究，将使这种新型电机能够尽快地应用于实际之中。
A variable speed constant frequency wind power generation system of doubly-fed induction generator based on converter excitation was described.
建立了基于变换器励磁的双馈感应电机的变速恒频风力发电功率控制系统的模型。
A tension fuzzy variable-structure control system was designed for constant tension of electric cable plastic wrapping automatic production process.
为保证电线加塑自动化生产过程中电线张力的恒定，设计了恒张力模糊变结构控制系统。
In recent years, the variable speed constant frequency wind generator system is the most widely question for discussion at home and abroad, especially for doubly-fed induction.
变速恒频风力发电系统是近年来国内外研究最广泛的课题，其中最具代表性的是绕线式转子双馈异步发电系统。
The constant and variable primary flow design proposals at the chilled water side of the evaporator has an important influence on the operation cost of the system.
冷冻站中采用蒸发器侧冷水系统变流量或常规的定流量系统的设计配置，对系统的运行能耗有着比较重要的影响。
This article is about the research of space control in the variable speed constant frequency wind energy conversion system.
本文主要研究了变速恒频双馈风力发电系统中的矢量控制。
The hydraulic system with variable displacement pump-constant displacement motor has the function of overload protection.
由变量泵-定量马达组成的液压系统具有超载保护，防止电缆被强行拉断的功能。
The effect of stiffness constant, viscosity damper coefficient and variable mass on the damped frequency and the relative damping ratio of the system were studied.
研究了系统刚度、粘性阻尼系数尤其是变质量等参数对系统固有频率和阻尼比的影响。
An experimental system of constant volume combustion bomb with variable turbulence parameters is designed and carried out for the fundamental research of premixed turbulent combustion.
设计了一种可变湍流参数定容燃烧弹试验装置，用于预混湍流燃烧的基础研究。
Based on switch mode sensor of relative wind direction, we present a kind of tracing wind fuzzy control system with constant sample cycle and variable control cycle.
基于开关式相对风向传感器，提出一种固定周期采样、变周期控制的风向随动模糊控制系统。
Take constant pressure supply water system of life area for example, this paper introduces the needs and realization of variable-frequence constant-pressure supply water system using PLC.
以生活区的恒压供水系统为例，介绍了应用PLC实现变频恒压供水系统的需求分析和实现过程。
The variable flow heating system is quite different from the constant flow heating system. So the relative control strategy for the heating network should be changed.
用户成为用热的主体，热网由以往的定流量运行变为变流量运行，热网特性与定流量热网特性完全不同，相应的热网控制策略也要发生变化。
It is found that the potential of the tower system is composed of two components, that are, the variable offset potential and the constant potential caused by unipolar charges of the lightning.
研究发现杆塔电位包括可变的抵消分量和雷电单极电荷引起的恒定分量两部分。
The design and manufacture for MW-class AC-excited doubly-fed generator is very important in the variable speed constant frequency doubly-fed wind power system.
在变速恒频双馈风电机组中，交流励磁双馈风力发电机的设计和制造技术是十分关键的。
Subsequently, an open loop experiment has been tested which verified the feasibility of the experimental generation system can run in variable speed and constant frequency condition.
随后，进行了双定子无刷双馈发电机实验系统的开环发电实验，实现了该发电系统的变速恒频发电。
Based on specific demand in machining process, a constant line speed control method is proposed, which is used in variable frequency speed control system.
针对数控机床工件恒线速加工时的特殊要求，提出了一种应用于变频调速系统的恒线速控制方法。
From point of view of electric-energy control, AC excited generation system for wind-energy with variable-speed and constant-frequency includes AC excited generator, AC exciter and the control system.
交流励磁变速恒频风力发电系统从电能控制的角度来看，它包括交流励磁发电机、交流励磁器和发电控制系统。
A design procedure with constant parameter frequency method is developed for the temperature control system with variable parameter applicable especially to thermodynamics.
提出了热工专业中特殊的变参数控制系统的定参数频率设计法，应用计算机进行了仿真计算并进行了实际系统的测试。
Variable air volume conditioning system is multivariable, strongly coupled, nonlinear and time variant, so its design, performance are more difficult than constant air volume conditioning system.
变风量空调系统具有非线性、多变量、强耦合及时变等特点，所以变风量空调控制系统的设计和运行的难度比定风量空调系统要大。
Twin stator brushless doubly fed generation system is quite prospective for variable speed and constant frequency solutions.
而双定子无刷双馈风力发电系统是当前变速恒频风力发电技术研究中一个很有发展前景的课题。
Twin stator brushless doubly fed generation system is quite prospective for variable speed and constant frequency solutions.
而双定子无刷双馈风力发电系统是当前变速恒频风力发电技术研究中一个很有发展前景的课题。
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