Establishment and safety evaluation of a flexible test platform for the vertical-axis wind turbine
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Title
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Establishment and safety evaluation of a flexible test platform for the vertical-axis wind turbine
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Description
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This work intends to construct and execute the safety evaluation of an test platform
for the small vertical-axis wind turbine (VAWT), which is mounted on the rooftop of a 60 mheight
building. The experiment platform designed here is flexible and suitable for carrying out
the systematic performance evaluation on different types of VAWT. The wind turbine
performance measurement is conducted by utilizing the data acquisition system. All
environmental information and power data from sensors and generator on this platform are
recorded and transferred to the computer automatically. Later, these analogy signals are
transformed to digital format for transmitting into computer. Also, with the aids of a visual
software programming within the framework of LabVIEW, the real-time monitoring on the
input/output parameters of generator and the wind condition can be accomplished
simultaneously. Afterwards the data processing and in-depth analysis on the experimental
outcomes are carried out via the established computer program. Consequently, the on-site
performance of the wind turbine generator system is attained in an automatic and systematic
manner. Moreover, to ensure for providing sufficient data and its accuracy, statistic concept is
enforced to judge whether the test data are qualified or not in the data-processing procedure.
Regarding the safety evaluation of wind turbine on this test platform, the numerical models of
wind turbine and platform are analyzed via ANSYS Workbench to obtain the forces exerting on
the main shaft and blades. This force distribution can be analyzed for checking if they can stand
and meet the safety criterion under various wind speeds. Furthermore, a 2 m-diameter, multiblade
vertical-axis wind turbine (MVAWT) is installed as a demonstrating case of the entire
procedural test. Firstly atmospheric parameter, such as wind velocity, wind direction, air
temperature, and air pressure is measured based on IEC 61400-12 standard on the rooftop of
building for one year range measurement time. By collecting and observing the wind parameter
data, such as mean wind velocity and wind direction distribution, the wind energy estimation of
this MVAWT can be analyzed quantitatively. In summary, together with the data-acquisition
software programmed under the framework of LabVIEW, this experimental system can provide
the capability for monitoring, recording, and filtering these test data in an rigor manner, and is
appropriate for executing the R&D and performance evaluation on different VAWTs.
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Bahasa
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English
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Tahun Terbit
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2012
