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WIND TURBINE BENCHMARK EXERCISE (WBE). MECHANICAL LOADS OF MAJOR WIND TURBINE COMPONENTS.

Objective

THE OBJECTIVE IS TO VERIFY AVAILABLE COMPUTER PROGRAMMES FOR CALCULATING MECHANICAL LOADS IN MAJOR WIND TURBINE COMPONENTS. THIS WILL BE ACHIEVED BY COMPARING THE COMPUTED LOADS MUTUALLY AND BY COMPARING THEM WITH MEASURED LOADS.

FIVE TOPICS CAN BE IDENTIFIED IN THE WIND BENCHMARK EXERCISE (WBE) ON MECHANICAL LOADS.

A. PROBLEM DEFINITION.THE CONDITIONS OF THE LOAD CASES WILL BE ELABORATED. THE LOAD CASES ORDERED IN INCREASING DEGREE OF COMPLEXITY ARE :

A) STATIONARY BEHAVIOUR (A CONSTANT WINDSPEED AND/OR A PERIODIC VARIABLE WINDSPEED),
B) TRANSIENT BEHAVIOUR (E.G. DESIGN GUSTS, LOSS OF GENERATOR LOAD),
C) LONG TERM DYNAMIC BEHAVIOUR (FOR DETERMINING FATIGUE CHARACTERISTICS).

B. SURVEY OF COMPUTER PROGRAMMES. THE CHARACTERISTICS, OPTIONS AND FACILITIES OF THE COMPUTER PROGRAMMES OF THE PARTICIPANTS WILL BE OUTLINED.

C. SELECTION OF A WIND TURBINE, BASED ON SUITABILITY OF THE MEASURING EQUIPMENT, ROTOR CONCEPT AND PROPER DOCUMENTATION.

D. DEFINITION OF THE INPUT AND OUTPUT DATA. THE TURBINE GEOMETRY, THE AEROFOIL DATA AND THE PRECISE OPERATING CONDITIONS WILL BE DEFINED. FURTHERMORE THE LOCATIONS WILL BE DETERMINED WHERE MECHANICAL LOADS ARE TO BE COMPUTED.

E. PERFORMING CALCULATIONS AND COMPARISONS.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

ENERGY RESEARCH CENTRE OF THE NETHERLANDS
Address
Westerduinweg 3
Petten
Netherlands

Participants (9)

CONCEPTION ET REALISATION D'APPLICATIONS AUTOMATISEES
France
FDO TECHNICAL CONSULTANTS WIND ENERGY SYSTEMS
Netherlands
Garrad Hassan and Partners Ltd
United Kingdom
NETHERLANDS ENERGY RESEARCH FOUNDATION ECN
Netherlands
RISOE NATIONAL LABORATORY
Denmark
Address
Frederiksborgvej 399
TECHNICAL UNIVERSITY OF DANMARK
Denmark
TEKNIKGRUPPEN AB + AERON. RESEARCH INSTITUTE
Sweden
Taylor Woodrow Construction Ltd
United Kingdom
Vrije Universiteit Brussel
Belgium
Address

Brussel