Evaluation of the energy characteristics of an asynchronous inverter-fed induction motor at different approximations of the magnetization curve

Evaluation of the energy characteristics of an asynchronous inverter-fed induction motor at... Results of research on the effect of magnetization-curve approximation of the electrotechnical steel and excitation frequency of an asynchronous inverter-fed induction motor (IFIM) on its energy performance with extremal control algorithms based on energy-saving criteria are presented in this article. An IFIM is a variant of a double-fed motor with static frequency converters in the stator and rotor circuits. Its application in a variable-speed drive meets to the greatest extent the main requirements for an ac machine in terms of speed regulation and providing high energy performance. It is shown that application of piecewise linear approximation by three sections and the spline function provides improved values of energy performance relative to the simple approximation by two linear sections due to becoming close to a real magnetization curve. It provides, under otherwise equal values of electromagnetic torque, a higher flux linkage with decrease in magnetization current. Control of the excitation frequency of the asynchronous inverter-fed induction motor has a significant influence on the steel losses of the machine. In the region of low loads, they are particularly important relative to the active losses in the motor windings. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Electrical Engineering Springer Journals

Evaluation of the energy characteristics of an asynchronous inverter-fed induction motor at different approximations of the magnetization curve

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Publisher
Allerton Press
Copyright
Copyright © 2017 by Allerton Press, Inc.
Subject
Engineering; Manufacturing, Machines, Tools
ISSN
1068-3712
eISSN
1934-8010
D.O.I.
10.3103/S1068371217060153
Publisher site
See Article on Publisher Site

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