期刊
ADVANCED COMPOSITE MATERIALS
卷 20, 期 1, 页码 39-51出版社
TAYLOR & FRANCIS LTD
DOI: 10.1163/092430410X504198
关键词
Real-time monitoring; composite wind turbine blade; fiber Bragg grating (FBG) sensor; natural frequency; FE modal analysis
资金
- Ministry of Knowledge Economy (MKE), Republic of Korea
The prototype of a 2 MW wind turbine (type U88) has been tested at Taebaek, South Korea since January 2009. A real-time monitoring system with fiber Bragg grating (FBG) sensors was designed and applied to monitor wind turbine blades in operation. Differences according to the operating conditions (yawing, pitching and start-up/normal operation) were monitored accurately in real time with sensors. Additionally, using commercial FEM codes, a GFRP-based composite rotor blade was modeled, and then natural frequencies obtained from the FE modal analysis were compared with the FFT results of measured strain data. Finally, this paper provides an overview of the real-time monitoring system setups and some current test results including modal characteristics. (C) Koninklijke Brill NV, Leiden, 2011
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