Dynamic-process optimization in an asynchronous electric drive with a scalar automatic-control system

被引：1

作者：

Braslavskii I.Y. ^{[1
]}

Kostylev A.V. ^{[1
]}

Tsibanov D.V. ^{[1
]}

Khabarov A.I. ^{[1
]}

机构：

[1] Ural Federal University, Russia

来源：

Russian Electrical Engineering | 2014年 / 85卷 / 09期

关键词：

Asynchronous electric drive; Optimization; Scalar control;

D O I：

10.3103/S1068371214090041

中图分类号：

学科分类号：

摘要：

Approaches are given to making dynamic asynchronous frequency-controlled asynchronous electric drives with scalar open-loop control systems energy-efficient. Questions of formulating special scalar control laws designed for operation in dynamic regimes (start-brake regimes) are discussed. A defi-nition of integral criteria of efficiency of electromagnetic transformation is given. The efficiency of the fol-lowing control laws is considered from the standpoint of the above criteria: a law obtained based on static motor equations, a law obtained from dynamic motor equations, and a law with initial magnetization of an asynchronous motor by a low-frequency voltage. Reasonable ranges of applications of these laws are deter-mined. It is shown that the use of premagnetization provides significant inrush stator reduction, at the beginning of starting of which it becomes possible to additionally reduce losses in the motor and improve the moment to current ratio. Moreover, the additional losses caused by premagnetization are significantly less than the losses caused by inrush current at the initial stage of the process in traditional systems. Results of simulation are provided. © Allerton Press, Inc., 2014.

引用

页码：575 / 580

页数：5

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