Wind power generation system should adopt the variable speed constant frequency (VSCF) control strategy in order to maximize the use of wind energy.
为了最大限度地利用风能，风力发电系统应采用变速恒频控制策略。
Two control ring work together to realize variable speed constant frequency.
运行时机组的两个控制环同时工作，实现变速恒频。
Suppose the speakers both emit a pure sinusoidal sound wave of constant frequency.
假定两个扬声器都发射恒定频率的纯正弦声波。
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。
The localizer is composed of two parts:a constant current constant frequency signal source and a signal detector.
装置由恒流信号电源和信号检测装置两部分组成。
The constant frequency hysteresis is adopted to keep switching frequency stable and improve the hysteretic control.
为了克服滞环控制的不足，串联侧采用恒频滞环来保持开关频率的稳定。
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。
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。
We design a suit of aviation AC excitation generator system, it insures the output voltage is constant frequency and constant voltage.
我们设计了一套航空用交流励磁发电机系统，以保证输出电压恒频恒压。
The high power shaft alternator constant frequency systems developed by Siemens is introduced, which is suitable for large container ships.
介绍了西门子开发的大功率轴带交流发电机恒频供电装置，适用于大型集装箱船；
This paper introduces the control method for the Wind Turbine Units of constant speed constant frequency and variable speed constant frequency.
文章介绍了恒速恒频及变速恒频并网型风力发电机组的控制方法。
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。
The low-frequency instability in variable speed constant frequency doubly fed induction generator(DFIG) widely used in wind power generation is investigated.
研究了广泛应用于风力发电的变速恒频双馈感应电机系统中的低频不稳定现象。
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。
On constant frequency ratio, loading ratio has an importance influence on the initiation and propagation of fatigue crack under double frequency complex loading.
在频率比确定的条件下，载荷比是影响双频疲劳裂纹萌生及扩展的一个重要因素。
Finally this article analyzed the mathematical model of wind turbine, compared to the current different types of variable speed constant frequency wind power systems.
最后分析了风力机的数学模型，对比了目前采用的不同类型的变速恒频风力发电系统。
MW variable speed constant frequency wind turbine from shenyang university of technology is a variable pitch wind turbine, it can change pitch to adjust power above rated wind speed.
由沈阳工业大学研制的MW级变速恒频风电机组属于变桨距型机组，它在额定风速以上进行变桨距调功控制。
Then the piecewise PID pitch-controlled algorithm and the control strategy for transition between variable speed constant frequency (VSCF) and pitch control were used in the test-bed.
在此试验台上对提出的分段PID变桨距控制算法以及变速恒频和变桨距切换设定的控制策略进行试验研究。
Based on the introduction of components and principle of work of frequency modulation system of constant frequency AC power supply, math model of frequency modulation system is established.
在介绍某型恒频交流电源频率调节系统的组成和工作原理的基础上，建立频率调节系统的数学模型。
The variable speed constant frequency double-fed wind power system is taken as the research object and the control problem of maximum wind energy tracing below the rated wind speed is studied.
以变速恒频双馈风力发电系统为研究对象，研究了额定风速以下风能的最大追踪控制问题。
This paper presents a pulse density modulated (PDM) series resonant inverter developed for plastic film surface treater. The use of the PDM inverter enables the constant frequency and voltage.
该文介绍了一种采用脉冲密度调制(PDM)控制策略的串联谐振型塑料薄膜表面处理电源的研制。
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。
Based on the basic equation of A. C. exciting alternator, the vector chart and power flow chart of the alternator are studied, and a method of variable-speed and constant frequency (VSCF) is proposed.
从交流励磁发电机的基本方程出发，通过对其矢量图和功率流程的研究，提出了变速恒频的实现方法。
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 constant - frequency quasi - resonant converter has the problems of power limitation and high stresses.
恒频控制的准谐振变换器存在功率限制和高应力缺陷。
To the most potential variable-speed constant-frequency doubly fed induction generator, the device of power electronics converter used to control rotate speed is analyzed.
针对最具有发展潜力的变速恒频双馈风力发电系统，分析其用于转速控制的电力电子变换器装置。
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。
To improve the efficiency of wind power utilization, we employ more and more variable-pitch controllers and variable-speed constant-frequency (VSCF) controllers in wind-power generating systems.
风力发电系统为了更充分更有效的利用风能，越来越多的采用变桨控制系统和变速恒频控制系统。
To improve the efficiency of wind power utilization, we employ more and more variable-pitch controllers and variable-speed constant-frequency (VSCF) controllers in wind-power generating systems.
风力发电系统为了更充分更有效的利用风能，越来越多的采用变桨控制系统和变速恒频控制系统。
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