NDLI: Real-time operation surveillance of a static cycloconvertor based on waveform supervision

Content Provider	IEEE Xplore Digital Library
Author	Wiechmann, E.P. Garcia, A.R. Rodriguez, J.R. Salazar, L.D.
Copyright Year	1994
Description	Author affiliation: Concepcion Univ., Chile (Wiechmann, E.P.; Garcia, A.R.)
Abstract	Conventional protection systems of large power converters offer high reliability in preventing destructive failures. Such systems include differential and absolute current protections, under and overvoltage protections and semiconductor fuses. Also, some systems use independent electronic monitoring to detect frequency deviations, earth currents and overtemperature of selected units. To improve performance a large number of feedback signals is required. This number is proportional to the number of power semiconductors used in the converter circuit. Therefore, the reliability of a complete and user-friendly diagnosis system is intrinsically low. To overcome this problem an expert system approach is proposed in this work for the surveillance of a cycloconverter. A true on-line operation surveillance of a cycloconvertor based an waveform supervision is discussed. Using this method, the diagnosis of the converter operation requires a reduced number of feedback signals. Some usual abnormal and faulty conditions are examined. Finally, selected experimental results obtained with a laboratory prototype are presented.
Starting Page	88
Ending Page	91
File Size	320288
Page Count	4
File Format	PDF
ISBN	0780319613
DOI	10.1109/ISIE.1994.333137
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-05-25
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Surveillance Power system protection Power system reliability Feedback Voltage control Fuses Condition monitoring Frequency Earth Circuits
Content Type	Text
Resource Type	Article

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