ÇUKUROVA UNIVERSITY INSTITUTE OF NATURAL AND APPLIED ...

CONTENTS
PAGES
ABSTRACT .................................................................................................................. I
ÖZ ................................................................................................................................ II
ACKNOWLEDGEMENTS ....................................................................................... III
CONTENTS ............................................................................................................... IV
LIST OF TABLES .................................................................................................. VIII
LIST OF FIGURES .................................................................................................... X
LIST OF SYMBOLS .............................................................................................. XIV
LIST OF ABBREVATIONS .................................................................................. XVI
1. INTRODUCTION .................................................................................................... 1
1.1. Background ....................................................................................................... 1
1.2. DVR .................................................................................................................. 1
1.3. Outline of Thesis............................................................................................... 3
2. POWER QUALITY ................................................................................................. 5
2.1. Sources and Effects of Power Quality Problems .............................................. 6
2.2. Power Quality Problems ................................................................................... 6
2.2.1. Voltage Sag ............................................................................................ 8
2.2.2. Voltage Swell ......................................................................................... 8
2.2.3. Voltage Fluctuations .............................................................................. 8
2.2.4. Harmonics .............................................................................................. 9
2.2.5. Interharmonics........................................................................................ 9
2.2.6. Transients ............................................................................................. 10
2.2.7. Interruption ........................................................................................... 10
2.3. Power Quality Standards ................................................................................. 11
2.4. Solutions to Power Quality Problems .............................................................. 11
3. FUNDAMENTALS OF DVR ................................................................................ 13
3.1. Introduction..................................................................................................... 13
3.2. Power Circuit and Topologies ........................................................................ 13
3.2.1. Operation of DVR ................................................................................ 15
3.2.2. Use of Converters in DVR ................................................................... 17
IV