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A model-based fault detection and diagnostic methodology for secondary HVAC systems /Li, Shun. Wen, Jin. January 2009 (has links)
Thesis (Ph.D.)--Drexel University, 2009. / Includes abstract and vita. Includes bibliographical references (leaves 204-212).
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Distributed intelligent system for on-line fault section estimation of large-scale power networksBi, Tianshu. January 2002 (has links)
Thesis (Ph.D.)--University of Hong Kong, 2002. / Includes bibliographical references (leaves 112-126) Also available in print.
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Influence of adjustable speed drive on induction motor fault detection using stator current monitoring /Al-Shahrani, Ali S. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2006. / Printout. Includes bibliographical references (leaves 95-97). Also available on the World Wide Web.
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Investigations into the design of Powerformer for optimal generator and system performance under fault conditions /McDonald, John D. F. January 2004 (has links) (PDF)
Thesis (Ph. D.)--University of Queensland, 2004. / Includes bibliographical references.
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Artificial intelligence techniques applied to fault detection systems /Fischer, Daniel. Poehlman, Skipper William. January 2004 (has links)
Thesis (Ph.D.)--McMaster University, 2004. / Advisor: W. Poehlman. Includes bibliographical references (p. 189-195). Also available online.
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Robust fault detection and diagnosis for permanent magnet synchronous motorsLiu, Li, Cartes, David. January 2006 (has links)
Thesis (Ph. D.)--Florida State University, 2006. / Advisor: David A. Cartes, Florida State University, College of Engineering, Dept. of Mechanical Engineering. Title and description from dissertation home page (viewed Sept. 18, 2006). Document formatted into pages; contains xii, 133 pages. Includes bibliographical references.
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Methods for improving the reliability of semiconductor fault detection and diagnosis with principal component analysisCherry, Gregory Allan, January 1900 (has links) (PDF)
Thesis (Ph. D.)--University of Texas at Austin, 2006. / Vita. Includes bibliographical references.
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Model based diagnostics of motor and pumpsChoi, Ji-Hoon. January 1900 (has links) (PDF)
Thesis (Ph. D.)--University of Texas at Austin, 2006. / Vita. Includes bibliographical references.
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Data-driven approach for control performance monitoring and fault diagnosisYu, Jie, January 1900 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2007. / Vita. Includes bibliographical references.
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Fault location with travelling wavesBustamante Mparsakis, Xavier 08 February 2018 (has links) (PDF)
Travelling wave fault locators (TWFL) have the possibility to get rid of the limitation of typical locators based on the 50Hz impedance. Their principles were invented in the early 1900's, but only recently became economically viable. Some TWFL devices are now commercialized.Despite the recent commercialization of TW fault locators, actual field experience of TWFL is hard to acquire and rarely presented in the literature. Due to this, most studies are based on simplified simulation models.Practical experience in the form of TW records are important. It is the basis to understand the practical difficulties of applying TWFL algorithms. It is also necessary to illustrate the simulations limitations, and to test algorithms on real records.The work performed in this thesis was supported by Siemens with the hope to develop TWFL devices based on the results. The aim of the work was first to acquire experience in the practical side of TWs and their recording in substations. Based on this practical experience, the second objective was to study a TWFL that includes a new method for wave detection: the pattern recognition algorithm (PRA). The practical experience was acquired with a measurement campaign performed in the Belgian transmission network, and with laboratory tests that reproduce the measurements of currents inside a substation.Fault records suitable to TW studies were acquired during the measurement campaign, and are analysed in this report. The fault records and the laboratory tests highlighted and characterized the impact of the substation measurements on the waves recorded. Modelling those measurement systems is shown to improve the accuracy of the simulation tools.This report also presents a theoretical development of the PRA. The algorithm is adapted to take into account the practical difficulties previously analysed. An applicable version of the algorithm is proposed and tested. The algorithm proposal provides a precision better than 300m when applied to the simulation models. This precision varies with the set of parameters used, with the line topology, and with the fault location. On the field record acquired, the algorithm provides the fault location with a precision of 110m.A prototype has been developed by Siemens, and some devices have been installed at the end of this thesis. The TW records that will be acquired by those prototypes will provide a significant help in continuing the work presented in this report. / Doctorat en Sciences de l'ingénieur et technologie / info:eu-repo/semantics/nonPublished
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