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CSME 2020/04
Volume 41 No.2
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211-220
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Upgrade of The Wind Turbine Pitch Driving System for High-Turbulent Wind Operation
Jui-Hung Liua, Jien-Chen Chenb, Chin-Cheng Huangc and Wen-Jeng Laic
aSouthern Taiwan University of Science and Technology, Department of Mechanical Engineering, Tainan, Taiwan, 701.
bIndustrial Technology Research Institute, Green Energy and Environment Research Laboratories, Hsinchu, Taiwan, 304.
cInstitute of Nuclear Energy Research, Taoyuan, Taiwan, 411.
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Abstract:
Wind speed and wind direction received much attention during the WTG (wind turbine generator) operation. However, the WTG operation is highly determined by the turbulence intensity (T.I.) as well. Malfunctions of the WTG could have been taken place even the wind speed and the wind T.I. are within the WTG operation specification. This work is a case study of the influence of wind T.I. on the WTG operation. The research objects are 21 WTGs (Zephyros, model type: Z72, rated power 2000 kW) in mid-Taiwan. Emergency WTG shutdown has been engaged frequently in this wind farm due to the insufficient motor capability for the pitching motion against rapid wind variations. An upgrade of the pitch driving components has been conducted. The capability requirement of the pitching system has been firstly evaluated by software DNV-GL Bladed. Before the practical components’ replacement, the performance of new pitch driving module has been investigated with the aid of software DNV-GL Bladed, Adams and Matlab. The efficacy of the improved blade pitching system has been verified by practical operations of three WTGs. The information revealed in this work may be valuable for the future design of pitch regulation system or the operation and maintenance (O&M) for the current WTGs.
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Keywords: wind turbine, blade pitch system, turbulent intensity, O&M, pitch motor.
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*Corresponding author; e-mail:
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©
2020
CSME , ISSN 0257-9731
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