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Self-excitation of induction motors compensated by permanently connected capacitors and recommendations for IEEE Std 141-1993
Date
2003-03-01
Author
Ermiş, Muammer
Cadirci, I
Zenginobuz, G
Tezcan, H
Metadata
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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Self-excitation of induction motors compensated by permanently connected capacitors is investigated in this paper. Theoretical analyses of self, excitation phenomenon are carried out by using some simplified equivalent circuits, and a hybrid mathematical model in ABC/dq axes, respectively, in steady state and transient state. An unusual operating condition about water pumping stations is reported, in which water within the pipeline may drive the motor in the reverse direction at speeds higher than synchronous, when a supply interruption coincides with a check-valve failure. In order to prevent the motor from dangerous overvoltages due to self-excitation, it is recommended to connect a simple static protection circuit consisting of a resistor in series with a thyristor switch between any two lines of the motor. Critical resistance boundaries, which will lead to loss of excitation, and demagnetization of the rotor core are determined. separately as a function of operating speed. A suitable resistance value chosen in the Safe Design Area constitutes a reliable protection mechnism against self-excitation.
Subject Keywords
Control and Systems Engineering
,
Electrical and Electronic Engineering
,
Industrial and Manufacturing Engineering
URI
https://hdl.handle.net/11511/62959
Journal
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
DOI
https://doi.org/10.1109/tia.2003.808978
Collections
Graduate School of Natural and Applied Sciences, Article
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M. Ermiş, I. Cadirci, G. Zenginobuz, and H. Tezcan, “Self-excitation of induction motors compensated by permanently connected capacitors and recommendations for IEEE Std 141-1993,”
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
, pp. 313–324, 2003, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/62959.