vii
TABLE OF CONTENS
CHAPTER
1
2
TITLE
PAGE
DECLARATION
ii
DEDICATION
iii
ACKNOWLEDMENT
iv
ABSTRACTS
v
ABSTRAK
vi
TABLE OF CONTENTS
vii
LIST OF TABLES
x
LIST OF FIGURES
xi
LIST OF APPENDIX
xiii
INTRODUCTION
1
1.1 Introduction
1
1.2 Problem statement
1
1.3 Objectives
2
1.4 Significance of the Research
3
1.5 Scope of the Research
3
LITERATURE REVIEW
5
2.1 Literature Review Intodution
5
2.2 Classification Based on Generators
5
2.3 VSCF Wind Power Generation System
6
2.4 Classification of Designed Controllers
7
2.4.1 Intelligence Control in Wind Power System
8
viii
3
2.4.1.1 Fuzzy Control
8
2.4.1.2 Neural Network Control
10
2.5 Wind Turbine Size
12
RESEARCH METHODOLOGY
14
3.1 Data Gathering
14
3.1.1 Wind Turbine Characteritics
14
3.1.2 Wind Speed Profile
15
3.1.3 User Load Profile
16
3.1.4 Wind Turbine - State of Art
17
3.2 Modeling of WPGS
3.2.1 Modeling of rotor blade characteristics
23
3.2.2 Two mass drive train scheme
25
3.2.3 Configurations of VSVP-WTGS
27
3.2.4 Systems Differential Equations
28
3.2.5 State Space Representation
29
3.3 Primary Results
3.3.1 Initial Plant Simulation
3.3 Controller design
3.3.1 PI Controller
3.3.1.2 Controller Simulation (PI):
3.3.2 Fuzzy Logic Controller
4
5
22
30
30
33
34
34
35
3.3.2.1Fuzzy Controller Inputs:
38
3.3.2.2 Sample of Fuzzy Rules
41
3.3.2.3 Fuzzy Logic Controller Simulation
42
RESULTS AND DISSCUTION
44
4.1 Results
44
4.2 Fuzzy Logic Controller output
44
4.3 First Wind Speed Model
45
4. 4 Second Wind Speed Model
49
CONCLUSION AND RECOMMENDATION
FOR FUTURE WORK
54
ix
5.1 Conclusion
54
5.2 Recommendation for Future Work
56
REFERENCES
57
APPENDIX A
61-68
x
LIST OF TABLES
TABLE NO.
3.1
TITLE
V47-660 KW Characteristics
PAGE
2
xi
LIST OF FIGURES
FIGURE NO.
TITLE
PAGE
1.1
Block diagram of a WECS configuration
2
1.2
Fuzzy logic control strategy
3
2.1
Growth in size of commercial
12
wind turbine designs
3.1
Wind speed, scaled data daily profile
16
3.2
load profile, scaled data daily profile
17
3.3
Wind turbine configurations
19
3.4
Wind turbine components
20
3.5
Power coefficient vs. tip speed ratio
25
with varying β.
3.6
Two-mass drive train scheme
26
3.7
Wind turbine components by
27
Enron wind 750i
3.8
Configuration of a typical VSVP-WTGS
28
3.9
open loop system simulation
31
3.10
a: Wind Speed, b: Output Power
32
3.11
PI Controller Simulation
35
3.12
Block diagram of fuzzy controller
37
3.13
Fuzzy Logic Controller Toolbox
38
3.14
Wind speed membership function
39
3.15
Power error membership function
40
3.16
Power Rate Error membership function
41
xii
3.17
Fuzzy Logic Controller Simulation
42
xiii
LIST OF APPENDICES
APPENDIX
TITLE
PAGE
A
Plant Simulation
61
B
Wind Turbine Simulation
62
C
Pitch Angle, Power Error, Wind Speed Diagram
63
D
Pitch Angle, Power Rate Error, Power Error Diagram
64
E
Pitch Angle, Power Rate Error, Power Error Diagram
65
F
Fuzzy Roles Used For Fuzzy Logic Controller
66