Abstract
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Synchronous machines with brushless excitation have the disadvantage that the field winding is not accessible for the de-excitation of the machine. This means that, despite the proper operation of the protection system, the slow de-excitation time constant may produce severe damage in the event of an internal short circuit. A high-speed de-excitation system for these machines was developed, and this study presents the continuation of a previously published study. This study presents the design by computer simulation and the results of the first commissioning of this de-excitation system in a commercial 20 MVA hydro-generator. The de-excitation is achieved by inserting resistance in the field circuit, obtaining a dynamic response similar to that achieved in machines with static excitation. In this case, a non-linear discharge resistor was used, making the dynamic response even better. | |
International
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Si |
JCR
|
Si |
Title
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Iet Electric Power Applications |
ISBN
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1751-8660 |
Impact factor JCR
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1,307 |
Impact info
|
Datos JCR del año 2013 |
Volume
|
9 |
|
10.1049/iet-epa.2014.0313 |
Journal number
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6 |
From page
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405 |
To page
|
411 |
Month
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SIN MES |
Ranking
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