The variable frequency variable speed system of three-phase asynchronous motor based on DSP has been researched in this paper.
本文研究一种基于数字信号处理器（DSP）的三相异步电动机变频调速系统。
The using of the automatic optimization and frequency variable technology can realize efficiency in circulated water of the power plant.
利用自动优化控制和变频调速技术实现火电厂循环水泵安全节能高效控制。
This paper introduces a frequency variable control system for elevator driven by linear induction motor, and this elevator has been tested.
设计了一套圆筒形直线感应电动机驱动的电梯全数字变频控制系统，对其进行了试验。
This paper introduces a frequency variable and velocity variable system using IPM. Some problems which should be noticed in applications are presented.
介绍一种应用智能功率模块的变频调速系统，提出了使用智能功率模块时应注意的关问题。
The paper presents a SPWM frequency variable and velocity variable system with SCR as main switching devices. The proposed scheme has been verified through experiment.
介绍一种以SCR作主开关器件的SPWM控制方式的变频调速系统，并通过实验对提出的方案进行了验证。
And using the frequency variable adjusting speed technique to control the speed of benzole cooling pump automatically, to achieve the temperature stability of the benzole.
同时利用变频调速自动控制粗苯冷却泵的转速，实现粗苯温度的稳定。
The signal power supply that this thesis proposed is a frequency variable power source used in test field. This thesis concentrates on analysis and designing the nuclear part: Inverter.
本文的信号电源就是变频电源在测试领域的应用，本文就信号电源的核心逆变器部分做了详细的分析和设计。
It can enhance the response speed of system to apply frequency variable adjusting speed technique, it is able to guarantee the optimization requirement of air-fuel ratio more satisfactory.
采用变频调速技术可以提高系统的响应速度，能比较满意地保证空(气)燃(料)比的优化需要。
The shortcomings of the protection itself is pointed out through analysis of examples and discussion on these two methods for microcomputer based power frequency variable distance protection.
从微机工频变化量距离保护两种试验方法和试验结果之间的矛盾入手，在分析其原理的基础上，以实例分析和讨论这两种方法，指出了保护本身的不足之处。
The topic of Energy saving on motor system has always being researched by scholars, and the variable frequency variable speed technology has been paid the focus attention among the researches.
电机节能问题一直是广大学者研究的热点，在电机节能技术中最受瞩目的是变频调速技术。
Modulation domain analysis has become an important part for modern measurement technology. It is better than time domain and frequency domain measurement when indicating frequency variable signal.
调制域分析已经成为现代测试技术不可或缺的部分，在显现频率变化信号时优于时域测量和频域测量。
It is the perfect shape for producing a brilliant, expressive and infinitely variable sound in the same frequency range as the human voice.
这种结构是十分完美的，它使得小提琴可以产生美妙的，富有表现力的，以及在人声的频率范围内无限多变的声音。
This variable is used to set the frequency of the LDAP cache renewal used by Lotus Quickr.
该变量用于设置LotusQuickr使用的ldap缓存刷新频率。
Physical features and frequency of water temperature control system with variable parameter are analyzed.
本文分析了变参数水温控制系统的物理特性及频率特性。
The variable frequency AC controller mounts directly on the AC motor.
变频空调控制器直接安装在交流电机。
So, NIRVANA can say is the only true sense have speed of variable frequency drive screw air compressor.
所以，NIRVANA可以说是目前惟一真正意义上拥有调速变频驱动的螺杆空压机。
Such as variable frequency drives can be further connected directly to the communications network or hardwired if necessary.
例如变频驱动器如果有必要的话可以直接被连在通讯网络或硬线上。
A variable frequency inverter with a RS-485bus communication interface is designed. It has the advantages of simple hardware interface and high reliability of communication.
设计了一种带有RS- 485接口的交流变频控制器，它硬件接口简单，通讯可靠性高。
In addition, the upcoming Energy-related Products Directive deadline in 2015 will spur additional growth in the European variable frequency drives market.
此外，2015年即将到来的能源相关产品指引期限，将推动欧洲变频器市场的额外增长。
In the application of central air-conditioning, the technology of variable-frequency primary pump has been widely studied.
在中央空调的应用过程中，冷冻水一次泵变频技术得到了广泛的研究。
The control system of multi-connected air-condition unit is the control unit which combines a variable frequency module, a variable frequency motor of compressor and a system of refrigeration.
多联空调机组控制系统是将变频模块、变频压缩机和制冷系统有机集成一体的控制单元，其技术核心是变频控制模块。
This paper studied the three-phase PWM(pulse width modulation) rectifier in dual PWM variable frequency speed regulation system.
对双PWM变频调速系统中的三相PWM整流器及其控制方法进行了研究。
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 motors are designed for variable frequency drive.
电机变频驱动设计。
This paper discusses the slip frequency control of variable frequency regulating speed system, and analyses the shortage of this control way.
本丈对转差频率控制的变频调速系统进行讨论，分析这种控制方式所存在的不足；
Considering this, this paper presents a method by experiment which can measure performance curve of silicon steel sheet at different frequency as reference of designing variable frequency motor.
针对这种情况，本文提出一种实验的方法，测取不同频率下硅钢片的特性曲线，以供变频电机设计时参考。
The world's only manufacturer who complete master the core technology of High-end four-quadrant high voltage variable frequency.
荣信公司是国内外唯一掌握高端四象限中压变频技术的厂家。
The sole manufacturer with independent intellectual property rights of four-quadrant high voltage variable frequency technology.
荣信公司是国内最早对四象限中压变频技术有自主知识产权并掌握核心技术厂家。
The sole manufacturer with independent intellectual property rights of four-quadrant high voltage variable frequency technology.
荣信公司是国内最早对四象限中压变频技术有自主知识产权并掌握核心技术厂家。
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