共查询到20条相似文献,搜索用时 62 毫秒
1.
2.
3.
自从第1台电动机问世以来,工程师们就一直在寻找一种合适的方法以避免电动机的突然、剧烈启动。曾经也试过好几种“方法”,但是这些“方法”都必须借助其它的物体才能达到目标,无一能从根本上解决这一同题。不过,新型软启动器问世最终解决了这一难题。现在,ABB公司将简单的布线与电子力学相结合,成功地开发出一系列新型软启动器。使软启动研究又前进了一大步。这种新型软启动器不仅可以在电动机启动过程中对电流和电压实现超级电子控制,还增加了几个新的设计靓点。 相似文献
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
介绍了电动机负载机械提出的工艺和起动特性以及起制动要求 ,针对不同电机负载 ,如何选择适合要求的软起动器功能是解决机械设备和软起动器长期稳定、可靠运行的保证。 相似文献
14.
15.
16.
17.
Chih‐Ju Chou Chun‐Yao Lee Chun‐Chi Chen Chao‐Rong Chen Mu‐Cheng Chen 《IEEJ Transactions on Electrical and Electronic Engineering》2014,9(2):136-143
This paper proposes the optimal planning of soft starter characteristics for a large drain motor based on simulated annealing (SA). First, the planning of the soft starter characteristics is formulated as an optimization problem with minimal motor starting time; then, the constraints of the motor starting energy, power quality requirements, and minimal cost of transmission line are constructed. The system framework of an actual case in Taiwan is used as the basis of this study with simulation. Before and after the installation of three sets of soft starters, measuring instruments are used in the field to investigate the changes of current and voltage during the motor starting, thus establishing the database of current swell and voltage sag. The searching algorithm based on the SA method is developed by the program MATLAB, such that the soft starter can regulate the minimal motor starting time and meet the above‐mentioned constraints. According to the model of the system circuit and the characteristic parameters constructed by an actual case, the simulation results verify the superiority of the proposed SA method. © 2014 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc. 相似文献
18.
本文介绍了奇胜6ADX智能型软起动器的工作原理、功能和结构特点。用菜单方式描述了该起动器的运行参数和软件的数据结构,包括基本菜单、高级菜单、功能菜单、命令菜单和时钟菜单5个子菜单。 相似文献
19.