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K Compliance with IEC 61400-2 This appendix concerns the partial compliance with IEC 61400-2, which is a requirement for the present wind turbine design. The demands of the IEC standard may be divided into the following main categories: � External conditions � Structural design � Protection and shutdown system � Testing � Electrical system � Support structure � Documentation � Wind turbine markings Each of the eight categories contains numerous demands, which are fully accounted for in the standard and therefore not repeated here. Table K.1 lists the categories and summa- rises the extent to which the normative requirements are met by the design. 223
LIST OF ATTACHMENTSCOMPLIANCE WITH IEC 61400-2 Category Compliance External conditions The external conditions of IEC 61400-2 include 224 wind and environmental conditions. These are used to establish structural load cases and they further form the basis for aerodynamic perform- ance calculations. Structural design The structural design loads are based on simplified IEC load models and safety factors. The structural integrity of key components is verified. Protection and shutdown system The design complies with the protection system requirements of the IEC standard if it is used with an electrical system with the same properties as those described in section 7.2. Testing No tests are performed due to the lack of a proto- type. Electrical system Design of the electrical system is beyond the scope of this project and its compliance with the IEC standard is therefore not treated. The general guidelines of section 7.2 however provide a good starting point. Support structure The wind turbine tower is treated to some extent, but further validation is needed. The foundation is not treated. Documentation IEC requires product manuals to be provided. While manuals are not produce, much of the information of this project thesis may be used to produce manuals containing clear description of assembly, installation and operation of the wind turbine. Wind turbine markings All required marking information may be found in Table K.1: Categories of IEC 61400-2 table 5.1, except for full details of the electrical system.
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WIND TURBINE DESIGN
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ABSTRACT At the request of the Engi
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CONTENTS 1 Introduction ...........
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E Structural analysis of blades ...
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INTRODUCTION members. Today EWB-DK
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INTRODUCTION Figure 1.2: Left pictu
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INTRODUCTION 6
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PROBLEM STATEMENT reconfigured with
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PROBLEM STATEMENT 10
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METHODOLOGY Figure 3.1: Flow chart
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METHODOLOGY 14 3.1 Calculation meth
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CONCEPTUALISATION the kinetic wind
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CONCEPTUALISATION Figure 4.3: (a) D
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CONCEPTUALISATION issues due to tur
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CONCEPTUALISATION 22 Figure 4.8: Ty
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CONCEPTUALISATION � Darrieus 24 F
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CONCEPTUALISATION 26 Figure 4.13: G
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CONCEPTUALISATION Figure 4.14: Powe
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CONCEPTUALISATION 30 ID Requirement
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CONCEPTUALISATION most suitable sol
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CONCEPTUALISATION The embodiment de
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DESIGN PRESENTATION The main dimens
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DESIGN PRESENTATION The design prop
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DESIGN PRESENTATION The background
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ROTOR 42 6.1 Number of blades Moder
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ROTOR 44 Figure 6.4: Blade design s
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ROTOR Table 6.3 provides a material
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ROTOR Figure 6.7 displays the lift
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ROTOR Figure 6.9: Rotor power outpu
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ROTOR 6.2.3 Manufacturing During th
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ROTOR 54 The three sides of the tem
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ROTOR When the carving process is f
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ROTOR 58 Figure 6.17: Blade attachm
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ROTOR 60 Figure 6.19: Rotor power o
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ROTOR 62 Figure 6.22: Efficiency
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ROTOR sidering the output from the
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ROTOR 66
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GENERATOR AND ELECTRICAL SYSTEM 68
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GENERATOR AND ELECTRICAL SYSTEM The
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GENERATOR AND ELECTRICAL SYSTEM Fig
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GENERATOR AND ELECTRICAL SYSTEM 74
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YAW AND FURLING For an upwind wind
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YAW AND FURLING (16), which are bol
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YAW AND FURLING 80 8.2 Furling syst
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YAW AND FURLING 82 8.3 Summary The
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TOWER Concrete tower 84 Figure 9.1:
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TOWER 86 Figure 9.4: Turbulent air
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TOWER Figure 9.7 shows the tower ba
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TOWER models [41, p. 111]. Under ce
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ALTERNATIVE BLADE DESIGN 92 10.1 Ai
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ALTERNATIVE BLADE DESIGN 94 10.3 Su
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DESIGN EVALUATION 96 6 W Low-cost m
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DESIGN EVALUATION Weaknesses 1) The
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FURTHER DEVELOPMENT � Foundation
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FURTHER DEVELOPMENT 102
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CONCLUSION proposal is highly flexi
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NOMENCLATURE Abbreviation Descripti
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NOMENCLATURE Lgs Distance between u
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NOMENCLATURE 110
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BIBLIOGRAPHY [14] Magenn Power Inc.
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BIBLIOGRAPHY [53] H. J. Larsen, H.
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LIST OF ATTACHMENTSBASIS FOR CALCUL
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LIST OF ATTACHMENTSROTOR THEORY Thi
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LIST OF ATTACHMENTSROTOR THEORY 134
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LIST OF ATTACHMENTSROTOR THEORY Cho
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LIST OF ATTACHMENTSROTOR THEORY 138
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LIST OF ATTACHMENTSROTOR DESIGN TOO
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LIST OF ATTACHMENTSROTOR DESIGN TOO
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LIST OF ATTACHMENTSAIRFOIL With the
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LIST OF ATTACHMENTSAIRFOIL Complete
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LIST OF ATTACHMENTSSTRUCTURAL ANALY
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Page 179 and 180: LIST OF ATTACHMENTSSTRUCTURAL ANALY
Page 191 and 192: LIST OF ATTACHMENTSBLADE ATTACHMENT
Page 197 and 198: LIST OF ATTACHMENTSSTRUCTURAL VERIF
Page 203 and 204: LIST OF ATTACHMENTSTOWER ANALYSIS T
Page 209 and 210: LIST OF ATTACHMENTSFURLING AND YAW
Page 221 and 222: LIST OF ATTACHMENTSALTERNATIVE AIRF
Page 229: LIST OF ATTACHMENTSALTERNATIVE AIRF
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