Introduction to wind energy systems : basics, technology and operation

Library	Item Barcode	Call Number	Material Type	Item Category 1	Status
Searching... PSZ JB	30000010218430	TK1541 W33 2009	Open Access Book	Book	Searching... Unknown
Searching... PSZ KL	30000010218431	TK1541 W33 2009	Open Access Book	Book	Searching... Unknown

Authors have tried to strike a balance between a short book chapter and a very detailed book for subject experts. There were three prime reasons behind doing so: first, the field is quite interdisciplinary and requires simplified presentation for a person from non-parent discipline. Second reason for this short-version of a full book is that both the authors have seen students and technically oriented people, searching for this type of book on wind energy. Third reason and motivations was considering engineers who are starting their career in wind industry. This book is targeted to present a good starting background to such professionals.

Author Notes

Authors have tried to strike a balance between a short book chapter and a very detailed book for subject experts. There were three prime reasons behind doing so: first, the field is quite interdisciplinary and requires simplified presentation for a person from non-parent discipline. Second reason for this short-version of a full book is that both the authors have seen students and techically oriented people, searching for this type of book on wind energy. Third reason and motivation and motivation was considering engineers who are starting their career in wind industry. This book is targeted to present a good starting background to such professionals.

Reviews 1

Choice Review

This work is another volume in the publisher's "Green Energy and Technology" series. While there are numerous comprehensive large books on wind energy, Wagner (Ruhr-Univ. Bochum, Germany) and Mathur (Malaviya Nat. Ins. of Tech., India) present a concise, helpful work (80 pages) on the subject, with the main focus on the technical aspects. The authors briefly cover a wide variety of topics ranging from wind resources to the design and control of wind energy converters. The book concludes with a discussion of economics and policies and a look to the future for this technology. The clearly written text is mainly descriptive, and readers should have a basic knowledge of physics (undergraduate level) to understand the content. The work is aimed at public audiences and those who want a quick overview of wind energy systems. This is also a useful resource for engineering departments and for institutions where multidisciplinary research in the area of renewable energy is in process (e.g., architecture programs). Summing Up: Recommended. Upper-division undergraduates, graduate students, two-year technical program students, and general audiences. M. Alam Massachusetts Institute of Technology

1 Wind Energy Today	p. 1
1.1 Status	p. 1
1.2 Advantages and Disadvantages of Wind Energy Systems	p. 1
1.2.1 Advantages	p. 3
1.2.2 Disadvantages	p. 3
1.3 Different Types of Wind Energy Converters: An Overview	p. 3
2 Wind: Origin and Local Effects	p. 7
2.1 Origin and Global Availability	p. 7
2.2 Local Effects on Wind Flow	p. 8
2.3 Attractive Locations for Wind Energy	p. 9
2.4 Local Effects on Wind Flow	p. 10
2.4.1 Roughness Length and Wind Shear	p. 10
2.4.2 Wind Speed Variability	p. 10
2.4.3 Turbulence	p. 11
2.4.4 Obstacles to Wind Flow	p. 12
2.4.5 The Wind Wake and Park Effect	p. 13
2.4.6 The Hill Effect and Tunnel Effect	p. 13
2.5 Selecting a Turbine Site	p. 14
3 Physics of Wind Energy	p. 17
3.1 Energy Content in Wind	p. 17
3.2 Energy Conversion at the Blade	p. 20
3.3 Power Coefficients and Principles of Design	p. 21
3.3.1 Coefficient of Power cp and Betz'Law	p. 21
3.3.2 Tip Speed Ratio	p. 22
3.3.3 Power Efficiency	p. 22
3.3.4 Principles of Design	p. 24
3.4 Wind Variations	p. 24
3.4.1 Wind Shear with Height	p. 24
3.4.2 Influence of Weibull Distribution	p. 26
4 Components of a Wind Energy Converter	p. 29
4.1 Rotor Blades	p. 29
4.2 Gearboxes	p. 31
4.3 Generators	p. 32
4.3.1 Generating Voltage	p. 32
4.3.2 Generator Cooling System	p. 32
4.3.3 Generator Rotational Speed	p. 32
4.3.4 Two Speed, Pole Changing Generators	p. 34
4.4 Towers	p. 34
4.5 Miscellaneous Components	p. 35
5 Design Considerations	p. 41
5.1 Rotor Area of Turbines	p. 41
5.1.1 Reasons for Choosing Large Turbines	p. 41
5.1.2 Reasons for Choosing Smaller Turbines	p. 41
5.2 Number of Blades	p. 42
5.3 Horizontal or Vertical Axis Turbine	p. 43
5.4 Upwind or Downwind Turbine	p. 45
5.5 Load Considerations for Turbine Selection	p. 46
5.6 Wind Turbines: With or Without Gearbox	p. 47
5.7 Requirement of Grid, Synchronous or Asynchronous Generators	p. 50
5.8 Issue of Noise and Its Control	p. 53
6 Operation and Control of Wind Energy Converters	p. 57
6.1 Power Curve and Capacity Factor	p. 57
6.1.1 Power Curve	p. 57
6.1.2 Capacity Factor	p. 58
6.2 Power Control of Wind Turbines	p. 60
6.2.1 Pitch Control	p. 60
6.2.2 Stall Control	p. 62
6.2.3 The Yaw Control	p. 63
6.3 Connection to the Grid	p. 64
6.3.1 Applications of Wind Energy Converters	p. 64
6.3.2 Voltage Requirement	p. 65
6.3.3 Special Aspects of the Connection of Offshore Wind Parks	p. 65
7 Economics and Policy Issues	p. 69
7.1 Cost of Wind Turbines	p. 69
7.1.1 Initial Cost of Wind Turbine	p. 69
7.1.2 Operation and Maintenance Costs for Wind Turbines	p. 70
7.2 Electrical Tariffs	p. 71
7.3 Mechanisms to Support Funding	p. 73
7.3.1 Capacity Credit	p. 73
7.3.2 Environmental Credit and Clear Development Mechanism	p. 74
7.3.3 Tax Benefits	p. 74
7.4 Wind Energy Economics	p. 75
7.4.1 Financial Analysis-A Case Study for India	p. 75
7.4.2 Financing of a Wind Park - A Case in Germany	p. 75
7.5 Wind Turbines After Operational Life	p. 77
8 Outlook	p. 79
Glossary	p. 81
Literature	p. 83
Index	p. 85

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