并进行了变工况实验，得到在变频运行工况下压差变化较平缓、旁通动作幅度较小、旁通效果更灵敏的结论。
By way of variable conditioning experiments, it concludes that differential pressure changes more gently and the bypass valve operating a lesser extent and effecting more sensitively.
同时，针对变频运行时电动机主保护缺失问题，提出采用采样值差动保护作为变频电动机主保护的解决方案。
Sampling value differential protection can be adopted as main protection for motor when it works in frequency-conversion mode.
空压机在启动时，内部有少量的滞留气压，启动和加减速运行时要求变频器反应快速，因此，我们选用LG变频器。
Air compressor on start-up, internal have a small amount of stranded air pressure, start and deceleration requirement when inverter quick response, so, we choose LG inverter.
利用变频调速技术节约电力，提高电网对机组的调峰能力，保证电网的安全稳定运行。
Apply frequency conversion technique to save energy, improve the shift peak load capacity of electric network for the units and ensure the safe and stability operation of network.
本文对一些产品使用变频器实现运行节能的方法和意义进行了论述。
This article talks about the ways and the laws of using a frequency converter to realize energy saving on producing some products.
如将电机用于变频供电运行，则安装 PTC热敏电阻是必要的！
PTC thermistors are absolutely necessary if these motors are used for converter-fed operation!
介绍了控制系统的功能、运行节能原理、系统组成和变频器工作原理。
The functions, the principle of operation energy saving, system composition and operational principle of the converter are presented.
警告：不要同时运行多个变频程序。这会引起混乱，例如在两个频率之间来回切换。
Warning: Do not run more than one of the above programs at the same time. It may cause confusion like switching between two frequencies all the time.
针对该设备负载大、运行情况复杂等特点，主轴采用了交流变频调速矢量控制技术，小车采用了先进的交流伺服控制技术。
Against the heavy equipment load and complex operations characteristic, the spindle used vector control technology of ac frequency speed control; the car used advanced ac servo control technology.
在对电子膨胀阀的特性及制冷系统的运行规律的认真分析基础之上，设计了变频压缩机的精准在线控制。
Basing on analyzing the characteristic of EEV and running rule of refrigerating system in detail, it designs precise online control of inverter compressor.
当变频器及PLC发生故障时，自动切换到原软启动柜工频电源运行，以保证压缩机的正常工作。
When frequency converter and PLC is at fault, automatic switch to the original soft start work frequency power operation, ark to ensure the normal work of the compressor.
同时，LG变频器的自动节能模式，可使电机在满足负载转矩要求下以最小电流运行，达到更好的节电效果。
At the same time, the automatic energy-saving mode frequency converter LG, can make the motor in the meet load torque requirements to minimum current operation, to reach better energy saving effect.
采用双变频调速技术，日本松下变频器，保证机器各部位运行同步。
The machine adopts dual-frequency conversion timing technology and Japan panasonic transducer, assuring every part drives synchronously.
运行实践表明，新型双电机双变频离心机应用于市政污泥处理工艺，达到了节能减排的优良功效。
Operation experience showed that the new dual - motor dual - frequency centrifuges used in municipal sludge treatment process, has achieved excellent result in energy - saving, and emission reduction.
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。
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.
为了提高冶金原料吊车的运行能力，本文给出了基于西门子PLC的变频器驱动系统。
In order to improve the power of function of metallurgy stock crane, the system of transducer drive based SIEMENS PLC was given in this paper.
通过对结晶系统工作情况的分析，对其进行设备改造，同时运用变频器进行运行控制方式的改进，起到改善工作状况、节约能耗的作用。
The paper analyzed the circumstance of crystallization system, altered the equipments, and used frequency converter to improve the control mode, which can improve work condition and save energy.
本文针对变频器运行过程中存在的谐波问题、负荷匹配以及发热问题进行分析，并且提出相应的解决方案。
This paper analyzed the problem of harmonic wave, matching of load and calorification for inverters in running and made the relatively measure.
针对富士变频器提出提高运行可靠性的意见。
Giving opinions of raising reliability of running against FUJI inverter.
对不同形式的高压变频技术特点进行了比较，总结了高压变频装置对机组稳定运行的影响及高压变频技术的发展趋势。
By comparing the characteristic of different technology, the influence on unit stable running by high voltage frequency conversion is summarized. Also the development tendency is predicted.
生产线运行速度通过触摸屏设定，变频器的运行频率、电流及所有设备的运行状态均可在触摸屏显示。
The running speed of the production line can be set by the touch screen, and the inverter frequency, electrical current and the running states of every equipment will be showed in the screen.
变频、PLC同步控制，运行稳定。
喂料、主驱动、旋切均采用变频调速，动力强劲、运行平稳、节省能源。
Feeding , driving device and rotary cutting adopts inverter to adjust the speed for more powerful drive and stable operation with low consumption.
变频器现场运行情况表明，冶金行业采用国产高压变频器对高炉除尘风机进行调速节能，改造是成功的，节能效果是明显的。
The running result indicates that the adoption of high voltage inverter to Remove-Dust is successful and the effect of saving energy is distinct.
通过触摸屏可以很好的控制变频器的运行状态和更改变频器的工作参数，并实时反映变频器的工作状态。
Through the touch screen can be well controlled inverter operation status, change operating parameters and reflect the working status of inverter in real time.
可选用变频驱动控制，根据客人流量自动控制运行速度，节能效果显著，提高设备的运行寿命，降低运行成本。
Customer can choose VVVF control to control running speed, the energy saving performance is obvious. It can prolong product life and reduce the operation cost.
本文探讨了家用空调器变频调速运行的有关技术方案和运行效果。
This paper discusses the technical scheme and the operation results of frequency varying speed regulation of home used air conditioner.
介绍了动力厂低压泵类设备运行现状，变频调速装置的特点。
The author introduces the running status of low pressure pump apparatuses and VVVF features.
通过分析可知，大型同步电机采用变频调速装置，可降低机械磨损，提高设备的运行可靠性。
It tells that the large-scale synchronous machine using the frequency conversion speeder, might reduce the machinery wearing, enhances the equipment reliability.
本文介绍了西门子GTO变频器的构成、特点和运行过程中易出现的故障，并着重阐述了故障的分析、处理方法和措施。
This paper introduces the structure, specification and feature of the GTO converter of SIEMENS, analyzes the operation trouble and gives solutions.
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