Discussion of the Results of the Rainflow Counting of a Wide Range of Dynamics Associated with the Simultaneous Operation of Adjacent Wind Turbines

Brian Smith

Discussion of the Results of the Rainflow Counting of a Wide Range of Dynamics Associated with the Simultaneous Operation of Adjacent Wind Turbines

Brian Smith

Mechanical and Thermal Engineering Sciences

Research output: Contribution to conference › Paper

Abstract

The objective of this study was to provide a fatigue load comparison between two identical wind turbines employing different rotor designs. One turbine was fitted with a rotor consisting of a set of NREL (SERI) thin-airfoil blades while the other rotor included the original-equipment AeroStar blades. The data discussed are based on sample load populations derived from the rainflow cycle countingof 405, 10-minute records specifically collected over a wide range of inflow turbulence conditions. The results have shown that the statistical structure of the alternating load cycles on both turbines can be described as a mixture of three stochastic processes. We noted a high degree of load distribution similarity between the two turbines, with the differences attributable to either rotorweight or swept area.

Original language	American English
Number of pages	10
State	Published - 1992
Event	Prepared for WINDPOWER '92 - Seattle, Washington Duration: 19 Oct 1992 → 23 Oct 1992

Conference

Conference	Prepared for WINDPOWER '92
City	Seattle, Washington
Period	19/10/92 → 23/10/92

Bibliographical note

Prepared for WINDPOWER '92, 19-23 October 1992, Seattle, Washington

NREL Publication Number

NREL/TP-442-5159

Keywords

blades
durability
fatigue
wind turbines

Access to Document

https://www.nrel.gov/docs/legosti/old/5159.pdf

Cite this

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title = "Discussion of the Results of the Rainflow Counting of a Wide Range of Dynamics Associated with the Simultaneous Operation of Adjacent Wind Turbines",

abstract = "The objective of this study was to provide a fatigue load comparison between two identical wind turbines employing different rotor designs. One turbine was fitted with a rotor consisting of a set of NREL (SERI) thin-airfoil blades while the other rotor included the original-equipment AeroStar blades. The data discussed are based on sample load populations derived from the rainflow cycle countingof 405, 10-minute records specifically collected over a wide range of inflow turbulence conditions. The results have shown that the statistical structure of the alternating load cycles on both turbines can be described as a mixture of three stochastic processes. We noted a high degree of load distribution similarity between the two turbines, with the differences attributable to either rotorweight or swept area.",

keywords = "blades, durability, fatigue, wind turbines",

author = "Brian Smith",

note = "Prepared for WINDPOWER '92, 19-23 October 1992, Seattle, Washington; Prepared for WINDPOWER '92 ; Conference date: 19-10-1992 Through 23-10-1992",

year = "1992",

language = "American English",

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TY - CONF

T1 - Discussion of the Results of the Rainflow Counting of a Wide Range of Dynamics Associated with the Simultaneous Operation of Adjacent Wind Turbines

AU - Smith, Brian

N1 - Prepared for WINDPOWER '92, 19-23 October 1992, Seattle, Washington

PY - 1992

Y1 - 1992

N2 - The objective of this study was to provide a fatigue load comparison between two identical wind turbines employing different rotor designs. One turbine was fitted with a rotor consisting of a set of NREL (SERI) thin-airfoil blades while the other rotor included the original-equipment AeroStar blades. The data discussed are based on sample load populations derived from the rainflow cycle countingof 405, 10-minute records specifically collected over a wide range of inflow turbulence conditions. The results have shown that the statistical structure of the alternating load cycles on both turbines can be described as a mixture of three stochastic processes. We noted a high degree of load distribution similarity between the two turbines, with the differences attributable to either rotorweight or swept area.

AB - The objective of this study was to provide a fatigue load comparison between two identical wind turbines employing different rotor designs. One turbine was fitted with a rotor consisting of a set of NREL (SERI) thin-airfoil blades while the other rotor included the original-equipment AeroStar blades. The data discussed are based on sample load populations derived from the rainflow cycle countingof 405, 10-minute records specifically collected over a wide range of inflow turbulence conditions. The results have shown that the statistical structure of the alternating load cycles on both turbines can be described as a mixture of three stochastic processes. We noted a high degree of load distribution similarity between the two turbines, with the differences attributable to either rotorweight or swept area.

KW - blades

KW - durability

KW - fatigue

KW - wind turbines

M3 - Paper

T2 - Prepared for WINDPOWER '92

Y2 - 19 October 1992 through 23 October 1992

ER -

Discussion of the Results of the Rainflow Counting of a Wide Range of Dynamics Associated with the Simultaneous Operation of Adjacent Wind Turbines

Abstract

Conference

Bibliographical note

NREL Publication Number

Keywords

Access to Document

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Cite this