变频技术

变频技术在广州地铁集中冷冻站的应用

The Application of VVVF System in Centralized Refrigeration Plant of Guangzhou Metro

变频技术在调和油罐液位控制中的应用研究

The application of VVVF in the liquid level control of lubricating tank

变频技术在GIS电压互感器误差试验中的应用

Application Study of the Converter Technique in GIS Voltage Transformer Error Calibration

基于PLC及变频技术的高速喷水织机电子送经系统

Electronic Let-off Mechanism of Speedy Water-jet Loom with PLC and Frequency Conversion Technology

PLC及变频技术在自来水厂的二级泵房的控制应用

Application of PLC and the Frequency Conversion Technique to Secondary Pump Control in the Waterworks

基于PLC和变频技术的纺织空调系统的研究与应用

The Research and Application of Air-conditioning System Based on PLC and Frequency Conversion Technology in the Textile Mill

基于Logo和变频技术的医院恒压供水设计

Energy Conservation Design of the Constant Pressure Water Supply of Hospital Based on Logo and Frequency Conversion

变频技术在B1包装机组改造中的应用

An Application of Frequency Conversion Technique in Reform of Packer Set B1

Ku波段锁相上变频技术在VSAT通信系统中的应用

Application of Ku-band Up-conversion with OPLL in VSAT Communication System

NLO激光变频技术

NLO changing frequency technology of laser

300MW机组凝结水泵采用变频技术调速

Application of Variable-frequency Technique in Speed Regulation of Condensing-water Pump of 300 MW Generation Set

为了提高半轴生产及淬火工艺水平，利用PLC和变频技术，对原有液压控制的双工位淬火机床实行机电一体化改造，效益显著。

In order to improve the quenching process of semi-axle production , reform is made to the existing hydraulic double-station quenching machine with mechanic-eletronics by use of PLC and frequency converter . Obvious benefit is obtained after reformation .

为了延长灯管的使用寿命，在CCFL背光源模块中设计了一种基于变频技术的数字调光控制器。

To extend the lamp life , a digital-dimming controller with variable-frequency oscillator structure was designed in CCFL module .

分析了在电机的驱动和控制系统中，分别采用PWM和PAM控制技术所带来的问题，进而提出将两种技术有效结合起来的PAM/PWM复合变频技术。

The problem produced by using PWM and PAM technology separately is analyzed in induction motor driving and controlling system . And then PAM / PWM inverter technology is proposed which combined PAM and PWM efficiently .

PWM技术在逆变电路中的应用最为广泛，也是变频技术的核心，同时在机床，液压位置控制系统等机械装置中也发挥着重要的作用。

PWM technology is the most widely applied in contravariant circuit and is also the core of frequency conversion technology . Meanwhile it also plays an important role in machine tool , hydraulic pressure location control system and other mechanisms .

提出借助变频技术和电力电子（PE）控制技术，并应用结构简单、坚固可靠、维护方便、成本低廉的异步发电机，可实现高质量电能的输出，使风电系统处于最佳的风能利用状态。

It was suggested that the inverter technique , power-electronic ( PE ) control technique , and asynchronous generators of simple construction , high reliability , easy maintenance and low costs should be applied in order to utilize wind power resources with optimum efficiency .

本文主要阐述了应用变频技术改进ZDS型间歇式水力碎浆机的情况。

This paper will discuss the application of AC inverter in the batch hydrapulper ZDS which can solve the problem .

对数码涡旋技术和变频技术进行了比较，并对数码涡旋技术在使用中可能存在的问题，以及新的控制理论和控制技术在数码涡旋VRV空调系统中的应用等方面进行了分析和探讨。

The problems that maybe exist in the practical digital scroll technology and new control theories and control techniques used in the digital scroll VRV air-conditioning system are analyzed and discussed .

以北京工业职业技术学院广场喷泉应用变频技术，将一个手动控制的喷泉改造成自动控制喷泉为例，说明PLC控制器和变频器在喷泉中的应用。

In this paper , the square fountain of Beijing Polytechnic College , which has been converted into an auto-control fountain by applying the converter technique from a manual control fountain , is an example of showing the applying of the PLC controller and the frequency converter in the fountain .

并对工业上的380V通用变频技术、高压变频技术、分布式发电系统的功率变换技术及城市轨道车辆中电力电子技术作了介绍。

Secondly , it presents general purpose inverter technology of 380 V , high voltage technology and power conversion technology for distributed generating system and urban rail vehicles .

本文主要研究了基于中频调制的塔康系统（TACAN）中的数字下变频技术及数字信号处理算法，并最终使用了FPGA硬件平台来实现整个TACAN系统。

In this paper , we mainly investigate tacan system modulated by medium frequency , and how to implement down-conversion and digital signal processing algorithm . Finally we use FPGA to implement all the TACAN navigation airborne equipment .

其核心是交流变频技术和自动控制技术。

Its core is AC inverter technology and automatic control technology .

热带钢轧机主传动驱动系统交交变频技术改造

Cycloconverter technical reform for main drive system of hot strip mill

中压变频技术及其对电机的影响研究

Study of Medium Voltage VF Technology and Its Effect to Motor

基于直流变频技术的压缩机控制器设计

The Design of Compressor Controller Based on DC Frequency Conversion Technology

基于变频技术的电线包膜机改进设计

Improved Design of Wire Coating Machine Based on Frequency Conversion Technology

激光变频技术是激光应用的重要环节。

Laser frequency conversion is a key technology in laser application .

变频技术在等张力供纸控制中的应用

The Application of Inverter Drive to Paper Supply with Equal Tension

空调水系统采用二级泵变频技术的探讨

The Discussion of Variable Frequency Pump Technique in Air-Conditioning Water System

用矢量变频技术改造龙门刨床工作台拖动系统

Reform table driving system of double-housing planer with vector converter technology