Summary report describing current state-of-the-art developments on efficiency determination methods for wind turbines and nacelles in the field and on test benches respectively, their traceability, and general methods for direct and indirect efficiency determination

Zenodo (CERN European Organization for Nuclear Research)

Abstract

This report has been produced within the EMPIR project entitled Traceable Mechanical and Electrical Power Measurement for Efficiency Determination of Wind Turbines or 19ENG08 WindEFCY. More information about this collaborative research project can be found on the project’s website https://www.ptb.de/empir2020/windefcy/home/. This report aims to investigate the multitude of influencing variables and the changing boundary conditions for measurements to determine the efficiency of wind turbines. Moreover, through a systematic comparison of direct and indirect efficiency determination methods for rotating electrical machines, the challenges for designing an efficiency determination procedure for nacelles and their components on test benches is examined.

Authors 15

1. Maximilian Zweiffel Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen

2. Juan Manuel Quintanilla Crespo

   National Renewable Energy Centre

   Affiliation as printed

   CENER

3. Lukáš Vavrečka
   Affiliation as printed

   CMI

4. María Ana Sáenz Nuño
   Affiliation as printed

   DINNTECO

5. Norbert Eich

   Fraunhofer Institute for Wind Energy Systems

   Affiliation as printed

   Fraunhofer IWES

6. Janusz D. Fidelus

   Central Office of Measures

   Affiliation as printed

   GUM

7. Rafael Soares de Oliveira

   Instituto Nacional de Metrologia, Qualidade e Tecnologia

   Affiliation as printed

   Inmetro

8. Christian Mester

   Swiss Federal Institute of Metrology

   Affiliation as printed

   METAS

9. Christian Lehrmann

   Physikalisch-Technische Bundesanstalt

   Affiliation as printed

   PTB

10. Zihang Song

    Physikalisch-Technische Bundesanstalt

    Affiliation as printed

    PTB

11. Nijan Yogal

    Physikalisch-Technische Bundesanstalt

    Affiliation as printed

    PTB

12. Johannes Teigelkötter

    Aschaffenburg University of Applied Sciences

    Affiliation as printed

    TH Aschaffenburg

13. Eusebio Bernabéu
    Affiliation as printed

    DINNTECO

14. Timo Kananen

    VTT Technical Research Centre of Finland

    Affiliation as printed

    VTT

15. Paula Weidinger

    Physikalisch-Technische Bundesanstalt

    Affiliation as printed

    PTB