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Proceedings Paper

A simulation environment for assisting system design of coherent laser doppler wind sensor for active wind turbine pitch control
Author(s): Leilei Shinohara; Tuan Anh Pham Tran; Thorsten Beuth; Harsha Umesh Babu; Nico Heussner; Siegwart Bogatscher; Svetlana Danilova; Wilhelm Stork
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Paper Abstract

In order to assist a system design of laser coherent Doppler wind sensor for active pitch control of wind turbine systems (WTS), we developed a numerical simulation environment for modeling and simulation of the sensor system. In this paper we present this simulation concept. In previous works, we have shown the general idea and the possibility of using a low cost coherent laser Doppler wind sensing system for an active pitch control of WTS in order to achieve a reduced mechanical stress, increase the WTS lifetime and therefore reduce the electricity price from wind energy. Such a system is based on a 1.55μm Continuous-Wave (CW) laser plus an erbium-doped fiber amplifier (EDFA) with an output power of 1W. Within this system, an optical coherent detection method is chosen for the Doppler frequency measurement in megahertz range. A comparatively low cost short coherent length laser with a fiber delay line is used for achieving a multiple range measurement. In this paper, we show the current results on the improvement of our simulation by applying a Monte Carlo random generation method for positioning the random particles in atmosphere and extend the simulation to the entire beam penetrated space by introducing a cylindrical co-ordinate concept and meshing the entire volume into small elements in order to achieve a faster calculation and gain more realistic simulation result. In addition, by applying different atmospheric parameters, such as particle sizes and distributions, we can simulate different weather and wind situations.

Paper Details

Date Published: 13 May 2013
PDF: 10 pages
Proc. SPIE 8789, Modeling Aspects in Optical Metrology IV, 87890V (13 May 2013); doi: 10.1117/12.2020594
Show Author Affiliations
Leilei Shinohara, Karlsruher Institut für Technologie (Germany)
Tuan Anh Pham Tran, Karlsruher Institut für Technologie (Germany)
Thorsten Beuth, Karlsruher Institut für Technologie (Germany)
Harsha Umesh Babu, Karlsruher Institut für Technologie (Germany)
Nico Heussner, FZI Forschungszentrum Informatik (Germany)
Siegwart Bogatscher, Karlsruher Institut für Technologie (Germany)
Svetlana Danilova, Karlsruher Institut für Technologie (Germany)
Wilhelm Stork, Karlsruher Institut für Technologie (Germany)

Published in SPIE Proceedings Vol. 8789:
Modeling Aspects in Optical Metrology IV
Bernd Bodermann; Karsten Frenner; Richard M. Silver, Editor(s)

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