Please use this identifier to cite or link to this item: http://hdl.handle.net/10603/512873
Title: Efficient extraction of wind energy Under unbalanced and distorted grid Conditions
Researcher: SAMUEL MUTHURAJ G
Guide(s): Sujatha Balaraman
Keywords: Engineering
Engineering and Technology
Engineering Electrical and Electronic
University: Anna University
Completed Date: 2022
Abstract: Modern high power Wind Electric Conversion (WEC) systems are capable of adjustable speed operation. Key advantages of variable speed wind generators compared to fixed speed generators are cost effectiveness and the ability to generate electricity even during lower wind speeds. The Doubly Fed Induction Generator (DFIG) based WEC systems are more favorable than squirrel cage induction machine and synchronous machine based variable speed schemes. The advantages include constant frequency-variable speed operation, four quadrant real and reactive power flows, reduced power electric converter rating and low power converter losses. newlineAs wind electric systems are normally connected to weak (lower X/R ratio) rural distribution grids, unbalanced load and asymmetric grid faults give rise to grid imbalances. This occurrence results in negative sequence flux linkages leading to damage of mechanical components. This dissertation focuses on two separate modest control strategies of DFIG based WEC system with Matrix Converter (MC) under unbalanced and harmonic grid conditions. Tedious sequence decomposition process and complex reference computations are avoided in the proposed control strategies. The conventional dc link back-to-back converter is replaced by MC due to their minimum energy storage requirements, bi-directional energy flows and fully controllable input power factor. newline
Pagination: xviii,117p.
URI: http://hdl.handle.net/10603/512873
Appears in Departments:Faculty of Electrical Engineering

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05_chapter 1.pdf176.48 kBAdobe PDFView/Open
06_chapter 2.pdf246.6 kBAdobe PDFView/Open
07_chapter 3.pdf240.8 kBAdobe PDFView/Open
08_chapter 4.pdf545.2 kBAdobe PDFView/Open
09_chapter 5.pdf1.76 MBAdobe PDFView/Open
10_chapter 6.pdf1.5 MBAdobe PDFView/Open
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