Verification of Tilt Effect on the Performance and Wake of a Vertical Axis Wind Turbine by Lifting Line Theory Simulation

Hidetaka Senga (), Hiroki Umemoto and Hiromichi Akimoto
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Hidetaka Senga: Department of Naval Architecture and Ocean Engineering, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
Hiroki Umemoto: Department of Naval Architecture and Ocean Engineering, Graduate School of Engineering, Osaka University, Suita 565-0871, Japan
Hiromichi Akimoto: Albatross Technology Inc., Chuo-ku, Tokyo 103-0013, Japan

Energies, 2022, vol. 15, issue 19, 1-17

Abstract: Renewable energy has received a lot of attention. In recent years, offshore wind power has received particular attention among renewable energies. Fixed-type offshore wind turbines are now the most popular. However, because of the deep seas surrounding Japan, floating types are more preferable. The floating system is one of the factors that raises the cost of floating wind turbines. Vertical axis wind turbines (VAWT) have a low center of gravity and can tilt their rotors. As a result, a smaller floating body and a lower cost are expected. A mechanism called a floating axis wind turbine (FAWT) is expected to further reduce the cost. FAWT actively employs the features of VAWT in order to specialize itself in the area of offshore floating-type wind turbines. The lifting line theory simulation was used in this study to discuss the performance of the FAWT under the tilted conditions and its wake field. The results show that a tilted VAWT recovers faster than an upright VAWT. This suggests that FAWTs can be deployed in high density and efficiently generate energy as an offshore wind farm using VAWTs.

Keywords: vertical axis wind turbine; floating axis wind turbine; lifting line theory; tilt of rotor; wake (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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