本文分析了快熔作软起动器短路保护的可行性和必要性。
The thesis will analyze the fast fuse used as soft start shortcircuit protect.
为了解决上述问题，本文研究了三相感应电动机软起动器。
A soft starter of three-phase induction will be discussed in this paper to solve the problems.
采用软起动器可以减小异步电动机起动时对电网的电流冲击。
The adoption of soft starters can counteract the current impact to the power supply for induction motor starting.
实验结果表明，该起动器是交流电动机比较理想的软起动器。
The experimental results show that the soft starter is satisfactory for alternating-current electric motors.
文章介绍了软起动器的原理、功能及其与减压起动方式的不同。
It also shows strong suit in reliability, stability, installment. principle, function of soft starter and its different starting way from transformer starter is introduced.
本文分析了交流软起动器的工作原理，给出了软起动器的设计思路。
The paper analyses the operating principle of the soft starter and gives a design thought on the soft starter.
它没有电子软起动器的发热问题，也不会像晶闸管一样引起高次谐波。
It neither has heating problem of the electronics soft starter, nor generates high frequency harmonic like SCR.
在MCC内安装软起动器时和软起动器用于远程悬吊站时，使用按钮。
Pushbuttons are used when the soft starter is installed within an MCC and for remote pendant stations.
介绍一种软起动器一拖多起动方案，它具有起动效果好，成本低等特点。
Introduced a soft starter based on a soft start solution with one control, it has good start result and lower cost ect.
其次详细的阐述了本文设计的软起动器系统的硬件电路结构与软件设计方案。
Secondly, this paper describes the hardware circuit and software design of the soft-start system in detail.
分析软起动器的犒点、性能、适用的场所范围以及船舶使用软起动器应注意的问题。
The feaures, performance, the range of application and some attentive problems of applying soft start system to ship are analyzed.
介绍了晶闸管调压电路的原理以及目前软起动器的起动方式，本文采用晶闸管调压方式。
The principle of the SCR adjusting voltage circuit and the starting model of soft starter are introduced. The voltage adjusting model SCR is used in this paper.
问题：3RW40软起动器是否需要设计外置旁路接触器？如加外置旁路接触器会有何影响？
Question: Is it necessary to add external bypass contactor for 3RW40 softstarter? What's the result when adding external bypass contactor for 3RW40 softstarter?
结果表明，该软起动器在软起动过程中，限制了电动机的起动电流，实现了电动机的平稳起动。
The results show that the soft starter could start up smoothly and reliably, and the starting current of the asynchronous motor is controlled.
阐述了晶闸管调压电路及软起动器主电路的工作原理、软起动器的硬件结构和功能以及软件设计。
It also introduces the working principle of the SCR adjusting voltage circuit and the starter's main circuit, the hardware structure and functions of the soft starter and the software program design.
介绍用CMOS数字电路实现的SCR软起动器，对软起动器的工作原理、电路组成作了详细的分析。
This paper introduces a SCR soft starter controlled by CMOS digital integrated circuits. The operation principle and circuit structure of the soft starters are analyzed in detail.
随后用MATLAB建立了软起动器的仿真模型，用模型仿真了具有代表性的限流软起动的起动特性。
Then, a new simulation model of asynchronous motor soft starter is designed based on MATLAB and the simulation results show the effectiveness of this scheme.
电子软起动器与传统的起动器的比较，优越的性能和质量保证，较低的故障率会使其得到越来越广泛的应用。
Comparing with conventional starter, the electronic soft starter has better performance and quality and lower failure rate, which puts it into more and more extensive application.
分析了电动机软起动器的工作原理，着重介绍了CR2智能型电动机软起动器的性能特点、起动、运行及停机方式。
The working principle of motor soft starter was analyzed, with emphasis on the introduction of performance feature, starting, running, stopping of CR2 intelligent motor soft starter.
常用的异步电机软起动器采用线性斜坡降压的方式进行泵类负载的软停控制时，容易引起泵系统软停时的喘振现象。
The pump system using asynchronous motor and soft starter is subjected easily to surges when soft stopping control method is used with linear voltage falling.
对电动机的直接起动、传统降压起动方式、起动方式进行对比，介绍了软起动器的起动模式、运行模式及适用场合。
Through comparison among direct starting, conventional reduced voltage starting and electronics starter, this thesis described starting mode, run mode and application location of soft starter.
最后利用本实验室现有的条件，对本文设计的软起动器进行了一系列的调试工作，并对实验波形和实验数据进行了分析。
Finally, using the equipments of the laboratory, a series of debugging for the soft starter was carried out. The experimental waveforms and data are analyzed.
分析软起动器的工作原理，结合在离心铸铝机的应用，阐明软起动器这种新型节能技术应用在三相异步电动机上的优越性。
In the light of application to centrifugal casting machine, working principle of soft starter is analyzed and the advantage of this new energy-saving technique of soft starter is presented.
但是由于中高压应用场合中晶闸管阀组可靠触发与保护技术难点较大，国内中高压领域成熟的且性价比较高的晶闸管调压软起动器较少。
However, due to the triggering and protection difficulties of this technique, we have less our own ripened and high cost performance production in medium-voltage.
本文研究了三相感应电动机软起动器，主电路由三组反并联的晶闸管构成。通过控制晶闸管的触发角，可降低三相感应电动机定子电压，从而达到抑制起动电流冲击的目的。
The principle of the soft starter is reducing the voltage applied to the stator of the induction motor by control the triggering angle of the thyristors in order to limit the starting current surge.
本文研究了三相感应电动机软起动器，主电路由三组反并联的晶闸管构成。通过控制晶闸管的触发角，可降低三相感应电动机定子电压，从而达到抑制起动电流冲击的目的。
The principle of the soft starter is reducing the voltage applied to the stator of the induction motor by control the triggering angle of the thyristors in order to limit the starting current surge.
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