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Title: Analysis of different bifurcations in power electronic converters
Researcher: Deiva sundari P
Guide(s): Uma G
Keywords: Electrical engineering
Power electronic converters
Unity Power Factor
Upload Date: 24-Feb-2014
University: Anna University
Completed Date: 01/10/2013
Abstract: Power electronic converters, being time-varying nonlinear newlinedynamical systems are found to exhibit several periodic steady state responses newlineas well as chaotic responses. In power electronic applications, the desired newlinebehaviour of the system is a stable periodic motion around a predefined value newlineof periodicity equal to the period of the external clock, which is used to newlinecontrol the system. However, there are cases wherein some external newlineparameters (like the input voltage or the load) fluctuate while the converter is newlinein operation and cause the limit cycle to lose its stability and enter into other newlineoperating regimes. Such changes may also occur due to accidental loss of newlinecomponents or due to some design requirements. Such a phenomenon, where newlineone mode fails to operate and another picks up, is termed as bifurcation. newlineHence it is of practical importance to know the conditions that ensure a newlinedesired operation and ways a desired operating mode may give way to an newlineundesirable one. In reality, bifurcation is to be avoided, but it is also known newlinethat designing a system too remote from bifurcation boundaries may degrade newlineother performance characteristics. Therefore, design-oriented bifurcation newlineanalysis has a significant impact on the practical methodologies taken to make newlinedesign trade-off and performance optimizations. newlineGenerally, two distinct types of bifurcation behaviour Generally, two distinct types of bifurcation behaviour have been newlineidentified for power electronic circuits, namely slow-scale bifurcation and newlinefast-scale bifurcation. The slow-scale bifurcation can be regarded as a kind of low-frequency instability which is caused by the outer voltage feedback loop newlinepermitting low-frequency oscillation and the fast-scale bifurcation can be newlineregarded as a kind of high-frequency instability which is caused by the inner newlinecurrent loop instability.
Pagination: xxix, 171p.
Appears in Departments:Faculty of Electrical and Electronics Engineering

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01_title.pdfAttached File33.85 kBAdobe PDFView/Open
02_certificate.pdf5.76 kBAdobe PDFView/Open
03_abstract.pdf13.43 kBAdobe PDFView/Open
04_acknowledgements.pdf6.75 kBAdobe PDFView/Open
05_contents.pdf160.32 kBAdobe PDFView/Open
06_chapter1.pdf62.85 kBAdobe PDFView/Open
07_chapter2.pdf1.27 MBAdobe PDFView/Open
08_chapter3.pdf1.35 MBAdobe PDFView/Open
09_chapter4.pdf833.33 kBAdobe PDFView/Open
10_chapter5.pdf15.05 MBAdobe PDFView/Open
11_chapter6.pdf2.55 MBAdobe PDFView/Open
12_chapter7.pdf22.99 kBAdobe PDFView/Open
13_references.pdf35.05 kBAdobe PDFView/Open
14_publications.pdf7.68 kBAdobe PDFView/Open
15_vitae.pdf6.03 kBAdobe PDFView/Open

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