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Proceedings Paper

Linear variable filter based oil condition monitoring systems for offshore windturbines
Author(s): Benjamin R. Wiesent; Daniel G. Dorigo; Özlem Şimşek; Alexander W. Koch
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Paper Abstract

A major part of future renewable energy will be generated in offshore wind farms. The used turbines of the 5 MW class and beyond, often feature a planetary gear with 1000 liters lubricating oil or even more. Monitoring the oil aging process provides early indication of necessary maintenance and oil change. Thus maintenance is no longer time-scheduled but becomes wear dependent providing ecological and economical benefits. This paper describes two approaches based on a linear variable filter (LVF) as dispersive element in a setup of a cost effective infrared miniature spectrometer for oil condition monitoring purposes. Spectra and design criteria of a static multi-element detector and a scanning single element detector system are compared and rated. Both LVF miniature spectrometers are appropriately designed for the suggested measurements but have certain restrictions. LVF multi-channel sensors combined with sophisticated multivariate data processing offer the possibility to use the sensor for a broad range of lubricants just by a software update of the calibration set. An all-purpose oil sensor may be obtained.

Paper Details

Date Published: 20 September 2011
PDF: 10 pages
Proc. SPIE 8105, Instrumentation, Metrology, and Standards for Nanomanufacturing, Optics, and Semiconductors V, 81050D (20 September 2011); doi: 10.1117/12.891505
Show Author Affiliations
Benjamin R. Wiesent, Technische Univ. München (Germany)
Daniel G. Dorigo, Technische Univ. München (Germany)
Özlem Şimşek, Technische Univ. München (Germany)
Alexander W. Koch, Technische Univ. München (Germany)

Published in SPIE Proceedings Vol. 8105:
Instrumentation, Metrology, and Standards for Nanomanufacturing, Optics, and Semiconductors V
Michael T. Postek, Editor(s)

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