The parallel inverter was used to explain the capacity of variable-speed system.
为了增大调速系统容量，采用了逆变器并联的方式。
A decoupled power controller based on inverse system theory was developed for a variable-speed doubly-fed wind power generation system.
应用多变量非线性控制的逆系统控制理论，对双馈型变速风力发电系统的有功功率和无功功率进行了解耦控制。
Power and Gearing device: Various kinds of motor, reducer, variable-speed motor, lift machine, protection device, and electronic control system etc.
动力与传动装置：各种类型电动机、减速机，变速机、电梯主机，保护装置，电控系统等。
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。
Based on the study of the lathe principle and peeling curve the thesis developed mathematical model of variable-speed feeding system to guarantee the even veneer thickness.
本论文通过对无卡轴旋切机原理和旋切曲线的研究，推导出了变速进给系统的数学模型，以保证所旋切的单板厚度均匀。
The switched reluctance drive is a new variable-speed motor system which consists of power electronically-switched circuits, doubly salient reluctance motor and controller.
开关磁阻电机是由功率开关电路、双凸极磁阻电机及控制器构成的新型调速电动机系统。
The parallel-connection and variable-speed operation characters of the centrifugal pump groups are studied by conics fitting of the character curves in the high efficiency area.
通过对离心式水泵高效工作区的性能曲线进行二次拟合，分析了离心式水泵机组并联调速运行特性。
The simulation results indicate that wind turbine is operated at maximum power coefficient with variable-speed mode and the output power of generator is kept around rated power with pitch control.
数字仿真表明，在风速低于额定风速时变速运行捕获能量比恒速运行捕获能量大；节距调节控制可以很好地使输出功率稳定在额定功率左右。
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。
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。
Variable-speed variable-frequency(VSVF), a new typed operational mode for the induction generator based wind power generation system is proposed based on the fractional frequency power transmission.
在分析异步风力发电系统模型的基础上，结合分频输电技术，提出了一种新型的异步风力发电系统运行方式——变速变频（VSVF）方式。
"We looked into installing a variable speed drive on the press," explains Yager, "so we could stamp the aluminum at the slower speed and the steel at the original speed."
我们考虑在压机上安装一个可变速的驱动装置，这样我们就可以冲压铝件时降低速度，冲压钢件时恢复原来的速度。
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。
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。
Analog fixed speed and digital variable speed.
模拟固定速度和数字式可变速。
Individual infinite variable speed drive of each roll with AC-motors coupled to programmable frequency inverters.
电机驱动方式为交流变频无极变速驱动。
All this indicate that GEHP has good part load characteristic and fit for variable speed adjustment.
这说明燃气机热泵部分负荷特性好，可以很好的实现变速调节。
Dynamic response of rigid pavement under variable - speed moving load caused by vehicle accelerating and decelerating and airplane landing are analyzed.
分析了行驶车辆加速、减速及飞机起降过程中变速移动荷载所引起的刚性路面的动力响应。
Principle and method for selecting variable speed ratio curves of manual and power steering gears are discussed.
讨论了手动及动力转向器变速比曲线的选择原则及方法。
Variable speed cutting is a new technology of improving machining quality of part' s end plane.
变速切削是提高零件加工质量的一种新工艺办法。
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。
The variable speed control for freeway traffic is a nonlinear and time variable system, it is difficult to model with a mathematical model. A neural network control method is put forward.
针对高速公路可变速度控制是一个非线性时变系统，难于用数学模型准确建模这一特点，提出了神经网络控制方法。
A hydraulic variable speed drive system of shield disk cutter has been designed.
设计了盾构刀盘变转速液压驱动系统。
The drill has variable speed control.
这钻机有变速控制。
An ABB variable speed drive system is to power the giant fan that generates subsonic wind speeds at Boeing's flagship wind tunnel in Philadelphia.
ABB的一个变速驱动系统正在为波音公司在费城的旗舰风洞的大型风扇提供动力，以制造出次音速风速。
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 utility model can be synchronously driven with a screw conveyor or can be independently driven by a fixed speed or variable speed transmission device.
可与螺旋输送机一起同步传动或者用固定速度或变速的传动装置单独传动。
But for turbines above 1 MW they also started to take variable speed because of problems they had with the gearboxes.
但是对于1兆瓦以上的风电设备，由于齿轮箱设计的问题，他们也开始采用变速方案。
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。
The model of hydraulic motor pump variable speed control system is built.
同时建立了该液压电机泵变速控制系统的数学模型。
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